CfRadial1 to CfRadial2

A data model transformation

In this notebook we show how to transform the CfRadial1 Data model to a CfRadial2 representation.

We use some internal functions to show how xradar is working inside.

Within this notebook we reference to the CfRadial2.1 draft. As long as the FM301 WMO standard is not finalized we will rely on the drafts presented.

import os

import xarray as xr
from open_radar_data import DATASETS

import xradar as xd

Download

Fetching CfRadial1 radar data file from open-radar-data repository.

filename = DATASETS.fetch("cfrad.20080604_002217_000_SPOL_v36_SUR.nc")

Open CfRadial1 file using xr.open_dataset

Making use of the xarray netcdf4 backend. We get back all data and metadata in one single CfRadial1 Dataset. Since xarray 2025.04.0 we have to use decode_timedalte=False to prevent erroneous decoding of timedelta values for eg. pulse widths.

ds = xr.open_dataset(filename, engine="netcdf4", decode_timedelta=False)
with xr.set_options(
    display_expand_data_vars=True, display_expand_attrs=True, display_max_rows=1000
):
    display(ds.load())

<xarray.Dataset> Size: 35MB
Dimensions:                           (sweep: 9, r_calib: 1, time: 4343,
                                       range: 996)
Coordinates:
  * time                              (time) datetime64[ns] 35kB 2008-06-04T0...
  * range                             (range) float32 4kB 150.0 ... 1.494e+05
Dimensions without coordinates: sweep, r_calib
Data variables:
    volume_number                     int32 4B 36
    platform_type                     |S32 32B b'fixed'
    primary_axis                      |S32 32B b'axis_z'
    status_xml                        |S1 1B b''
    instrument_type                   |S32 32B b'radar'
    radar_antenna_gain_h              float32 4B 45.15
    radar_antenna_gain_v              float32 4B 45.15
    radar_beam_width_h                float32 4B 0.92
    radar_beam_width_v                float32 4B 0.92
    radar_rx_bandwidth                float32 4B -9.999e+03
    time_coverage_start               |S32 32B b'2008-06-04T00:15:03Z'
    time_coverage_end                 |S32 32B b'2008-06-04T00:22:17Z'
    azimuth_correction                float32 4B 0.0
    elevation_correction              float32 4B 0.0
    range_correction                  float32 4B 0.0
    longitude_correction              float32 4B 0.0
    latitude_correction               float32 4B 0.0
    pressure_altitude_correction      float32 4B 0.0
    altitude_correction               float32 4B 0.0
    eastward_velocity_correction      float32 4B 0.0
    northward_velocity_correction     float32 4B 0.0
    vertical_velocity_correction      float32 4B 0.0
    heading_correction                float32 4B 0.0
    roll_correction                   float32 4B 0.0
    pitch_correction                  float32 4B 0.0
    drift_correction                  float32 4B 0.0
    rotation_correction               float32 4B 0.0
    tilt_correction                   float32 4B 0.0
    latitude                          float64 8B 22.53
    longitude                         float64 8B 120.4
    altitude                          float64 8B 45.0
    sweep_number                      (sweep) int32 36B 0 1 2 3 4 5 6 7 8
    sweep_mode                        (sweep) |S32 288B b'azimuth_surveillanc...
    polarization_mode                 (sweep) |S32 288B b'not_set' ... b'not_...
    prt_mode                          (sweep) |S32 288B b'not_set' ... b'not_...
    follow_mode                       (sweep) |S32 288B b'not_set' ... b'not_...
    fixed_angle                       (sweep) float32 36B 0.4999 1.099 ... 12.8
    target_scan_rate                  (sweep) float32 36B -9.999e+03 ... -9.9...
    sweep_start_ray_index             (sweep) int32 36B 0 483 966 ... 3376 3860
    sweep_end_ray_index               (sweep) int32 36B 482 965 ... 3859 4342
    r_calib_time                      (r_calib) |S32 32B b'2008-06-04T00:15:03Z'
    r_calib_pulse_width               (r_calib) float32 4B 0.0
    r_calib_xmit_power_h              (r_calib) float32 4B 145.3
    r_calib_xmit_power_v              (r_calib) float32 4B 145.3
    r_calib_two_way_waveguide_loss_h  (r_calib) float32 4B -36.89
    r_calib_two_way_waveguide_loss_v  (r_calib) float32 4B -36.89
    r_calib_two_way_radome_loss_h     (r_calib) float32 4B -9.999e+03
    r_calib_two_way_radome_loss_v     (r_calib) float32 4B -9.999e+03
    r_calib_receiver_mismatch_loss    (r_calib) float32 4B -9.999e+03
    r_calib_radar_constant_h          (r_calib) float32 4B -70.72
    r_calib_radar_constant_v          (r_calib) float32 4B -70.72
    r_calib_antenna_gain_h            (r_calib) float32 4B -9.999e+03
    r_calib_antenna_gain_v            (r_calib) float32 4B -9.999e+03
    r_calib_noise_hc                  (r_calib) float32 4B -114.7
    r_calib_noise_vc                  (r_calib) float32 4B -114.7
    r_calib_noise_hx                  (r_calib) float32 4B -9.999e+03
    r_calib_noise_vx                  (r_calib) float32 4B -9.999e+03
    r_calib_receiver_gain_hc          (r_calib) float32 4B 36.89
    r_calib_receiver_gain_vc          (r_calib) float32 4B 36.89
    r_calib_receiver_gain_hx          (r_calib) float32 4B -9.999e+03
    r_calib_receiver_gain_vx          (r_calib) float32 4B -9.999e+03
    r_calib_base_dbz_1km_hc           (r_calib) float32 4B -9.999e+03
    r_calib_base_dbz_1km_vc           (r_calib) float32 4B -9.999e+03
    r_calib_base_dbz_1km_hx           (r_calib) float32 4B -9.999e+03
    r_calib_base_dbz_1km_vx           (r_calib) float32 4B -9.999e+03
    r_calib_sun_power_hc              (r_calib) float32 4B -9.999e+03
    r_calib_sun_power_vc              (r_calib) float32 4B -9.999e+03
    r_calib_sun_power_hx              (r_calib) float32 4B -9.999e+03
    r_calib_sun_power_vx              (r_calib) float32 4B -9.999e+03
    r_calib_noise_source_power_h      (r_calib) float32 4B -9.999e+03
    r_calib_noise_source_power_v      (r_calib) float32 4B -9.999e+03
    r_calib_power_measure_loss_h      (r_calib) float32 4B -9.999e+03
    r_calib_power_measure_loss_v      (r_calib) float32 4B -9.999e+03
    r_calib_coupler_forward_loss_h    (r_calib) float32 4B -9.999e+03
    r_calib_coupler_forward_loss_v    (r_calib) float32 4B -9.999e+03
    r_calib_zdr_correction            (r_calib) float32 4B -9.999e+03
    r_calib_ldr_correction_h          (r_calib) float32 4B -9.999e+03
    r_calib_ldr_correction_v          (r_calib) float32 4B -9.999e+03
    r_calib_system_phidp              (r_calib) float32 4B -9.999e+03
    r_calib_test_power_h              (r_calib) float32 4B -9.999e+03
    r_calib_test_power_v              (r_calib) float32 4B -9.999e+03
    r_calib_receiver_slope_hc         (r_calib) float32 4B -9.999e+03
    r_calib_receiver_slope_vc         (r_calib) float32 4B -9.999e+03
    r_calib_receiver_slope_hx         (r_calib) float32 4B -9.999e+03
    r_calib_receiver_slope_vx         (r_calib) float32 4B -9.999e+03
    azimuth                           (time) float32 17kB 121.5 122.2 ... 213.0
    elevation                         (time) float32 17kB 0.379 0.2362 ... 12.81
    pulse_width                       (time) float32 17kB 0.0 0.0 ... 0.0 0.0
    prt                               (time) float32 17kB -9.999e+03 ... -9.9...
    prt_ratio                         (time) float32 17kB -9.999e+03 ... -9.9...
    nyquist_velocity                  (time) float32 17kB 26.92 26.92 ... 26.92
    unambiguous_range                 (time) float32 17kB 1.5e+05 ... 1.5e+05
    antenna_transition                (time) int8 4kB 0 0 0 0 0 0 ... 0 0 0 0 0
    n_samples                         (time) int32 17kB 192 192 192 ... 192 192
    r_calib_index                     (time) int8 4kB -1 -1 -1 -1 ... -1 -1 -1
    measured_transmit_power_h         (time) float32 17kB -9.999e+03 ... -9.9...
    measured_transmit_power_v         (time) float32 17kB -9.999e+03 ... -9.9...
    scan_rate                         (time) float32 17kB -3.277e+04 ... -3.2...
    DBZ                               (time, range) float32 17MB -3.07 ... nan
    VR                                (time, range) float32 17MB -25.24 ... nan
Attributes:
    Conventions:         CF/Radial instrument_parameters radar_parameters rad...
    version:             1.2
    title:               TIMREX
    institution:         
    references:          
    source:              
    history:             
    comment:             
    instrument_name:     SPOLRVP8
    site_name:           
    scan_name:           
    scan_id:             0
    platform_is_mobile:  false
    n_gates_vary:        false

xarray.Dataset

• Dimensions:
  • sweep: 9
  • r_calib: 1
  • time: 4343
  • range: 996
• Coordinates: (2)
  • time
    (time)
    datetime64[ns]
    2008-06-04T00:15:03 ... 2008-06-...

    standard_name :

    time

    long_name :

    time in seconds since volume start

    comment :

    times are relative to the volume start_time

    array(['2008-06-04T00:15:03.000000000', '2008-06-04T00:15:03.000000000',
           '2008-06-04T00:15:03.000000000', ..., '2008-06-04T00:22:16.000000000',
           '2008-06-04T00:22:17.000000000', '2008-06-04T00:22:17.000000000'],
          shape=(4343,), dtype='datetime64[ns]')

  • range
    (range)
    float32
    150.0 300.0 ... 1.492e+05 1.494e+05

    standard_name :

    range_to_center_of_measurement_volume

    long_name :

    Range from instrument to center of gate

    units :

    meters

    spacing_is_constant :

    true

    meters_to_center_of_first_gate :

    150.00000596046448

    meters_between_gates :

    150.00000596046448

    array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,
           149250.     , 149400.     ], shape=(996,), dtype=float32)

• Data variables: (100)
  • volume_number
    ()
    int32
    36

    standard_name :

    data_volume_index_number

    array(36, dtype=int32)

  • platform_type
    ()
    |S32
    b'fixed'

    standard_name :

    platform_type

    options :

    fixed, vehicle, ship, aircraft_fore, aircraft_aft, aircraft_tail, aircraft_belly, aircraft_roof, aircraft_nose, satellite_orbit, satellite_geostat

    array(b'fixed', dtype='|S32')

  • primary_axis
    ()
    |S32
    b'axis_z'

    standard_name :

    primary_axis_of_rotation

    options :

    axis_z, axis_y, axis_x

    array(b'axis_z', dtype='|S32')

  • status_xml
    ()
    |S1
    b''

    standard_name :

    status_xml

    array(b'', dtype='|S1')

  • instrument_type
    ()
    |S32
    b'radar'

    standard_name :

    type_of_instrument

    options :

    radar, lidar

    meta_group :

    instrument_parameters

    array(b'radar', dtype='|S32')

  • radar_antenna_gain_h
    ()
    float32
    45.15

    standard_name :

    nominal_radar_antenna_gain_h_channel

    units :

    dB

    meta_group :

    radar_parameters

    array(45.15, dtype=float32)

  • radar_antenna_gain_v
    ()
    float32
    45.15

    standard_name :

    nominal_radar_antenna_gain_v_channel

    units :

    dB

    meta_group :

    radar_parameters

    array(45.15, dtype=float32)

  • radar_beam_width_h
    ()
    float32
    0.92

    standard_name :

    half_power_radar_beam_width_h_channel

    units :

    degrees

    meta_group :

    radar_parameters

    array(0.92, dtype=float32)

  • radar_beam_width_v
    ()
    float32
    0.92

    standard_name :

    half_power_radar_beam_width_v_channel

    units :

    degrees

    meta_group :

    radar_parameters

    array(0.92, dtype=float32)

  • radar_rx_bandwidth
    ()
    float32
    -9.999e+03

    standard_name :

    radar_receiver_bandwidth

    units :

    s-1

    meta_group :

    radar_parameters

    array(-9999., dtype=float32)

  • time_coverage_start
    ()
    |S32
    b'2008-06-04T00:15:03Z'

    standard_name :

    data_volume_start_time_utc

    comment :

    ray times are relative to start time in secs

    array(b'2008-06-04T00:15:03Z', dtype='|S32')

  • time_coverage_end
    ()
    |S32
    b'2008-06-04T00:22:17Z'

    standard_name :

    data_volume_end_time_utc

    array(b'2008-06-04T00:22:17Z', dtype='|S32')

  • azimuth_correction
    ()
    float32
    0.0

    standard_name :

    azimuth_angle_correction

    units :

    degrees

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • elevation_correction
    ()
    float32
    0.0

    standard_name :

    beam_elevation_angle_correction

    units :

    degrees

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • range_correction
    ()
    float32
    0.0

    standard_name :

    range_to_center_of_measurement_volume_correction

    units :

    meters

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • longitude_correction
    ()
    float32
    0.0

    standard_name :

    longitude_correction

    units :

    degrees

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • latitude_correction
    ()
    float32
    0.0

    standard_name :

    latitude_correction

    units :

    degrees

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • pressure_altitude_correction
    ()
    float32
    0.0

    standard_name :

    pressure_altitude_correction

    units :

    meters

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • altitude_correction
    ()
    float32
    0.0

    standard_name :

    altitude_correction

    units :

    meters

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • eastward_velocity_correction
    ()
    float32
    0.0

    standard_name :

    platform_eastward_velocity_correction

    units :

    meters per second

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • northward_velocity_correction
    ()
    float32
    0.0

    standard_name :

    platform_northward_velocity_correction

    units :

    meters per second

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • vertical_velocity_correction
    ()
    float32
    0.0

    standard_name :

    platform_vertical_velocity_correction

    units :

    meters per second

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • heading_correction
    ()
    float32
    0.0

    standard_name :

    platform_heading_angle_correction

    units :

    degrees

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • roll_correction
    ()
    float32
    0.0

    standard_name :

    platform_roll_angle_correction

    units :

    degrees

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • pitch_correction
    ()
    float32
    0.0

    standard_name :

    platform_pitch_angle_correction

    units :

    degrees

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • drift_correction
    ()
    float32
    0.0

    standard_name :

    platform_drift_angle_correction

    units :

    degrees

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • rotation_correction
    ()
    float32
    0.0

    standard_name :

    beam_rotation_angle_relative_to_platform_correction

    units :

    degrees

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • tilt_correction
    ()
    float32
    0.0

    standard_name :

    beam_tilt_angle_relative_to_platform_correction

    units :

    degrees

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • latitude
    ()
    float64
    22.53

    standard_name :

    latitude

    units :

    degrees_north

    array(22.52669907)

  • longitude
    ()
    float64
    120.4

    standard_name :

    longitude

    units :

    degrees_east

    array(120.4335022)

  • altitude
    ()
    float64
    45.0

    standard_name :

    altitude

    units :

    meters

    positive :

    up

    array(45.00000179)

  • sweep_number
    (sweep)
    int32
    0 1 2 3 4 5 6 7 8

    standard_name :

    sweep_index_number_0_based

    array([0, 1, 2, 3, 4, 5, 6, 7, 8], dtype=int32)

  • sweep_mode
    (sweep)
    |S32
    b'azimuth_surveillance' ... b'az...

    standard_name :

    scan_mode_for_sweep

    options :

    sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

    array([b'azimuth_surveillance', b'azimuth_surveillance',
           b'azimuth_surveillance', b'azimuth_surveillance',
           b'azimuth_surveillance', b'azimuth_surveillance',
           b'azimuth_surveillance', b'azimuth_surveillance',
           b'azimuth_surveillance'], dtype='|S32')

  • polarization_mode
    (sweep)
    |S32
    b'not_set' ... b'not_set'

    standard_name :

    polarization_mode_for_sweep

    options :

    horizontal, vertical, hv_alt, hv_sim, circular

    meta_group :

    radar_parameters

    array([b'not_set', b'not_set', b'not_set', b'not_set', b'not_set',
           b'not_set', b'not_set', b'not_set', b'not_set'], dtype='|S32')

  • prt_mode
    (sweep)
    |S32
    b'not_set' ... b'not_set'

    standard_name :

    transmit_pulse_mode

    options :

    fixed, staggered, dual

    meta_group :

    radar_parameters

    array([b'not_set', b'not_set', b'not_set', b'not_set', b'not_set',
           b'not_set', b'not_set', b'not_set', b'not_set'], dtype='|S32')

  • follow_mode
    (sweep)
    |S32
    b'not_set' ... b'not_set'

    standard_name :

    follow_mode_for_scan_strategy

    options :

    none, sun, vehicle, aircraft, target, manual

    meta_group :

    instrument_parameters

    array([b'not_set', b'not_set', b'not_set', b'not_set', b'not_set',
           b'not_set', b'not_set', b'not_set', b'not_set'], dtype='|S32')

  • fixed_angle
    (sweep)
    float32
    0.4999 1.099 1.802 ... 9.102 12.8

    standard_name :

    beam_target_fixed_angle

    units :

    degrees

    array([ 0.4999,  1.0986,  1.8018,  2.5983,  3.598 ,  4.7021,  6.4984,
            9.1022, 12.7991], dtype=float32)

  • target_scan_rate
    (sweep)
    float32
    -9.999e+03 ... -9.999e+03

    standard_name :

    target_scan_rate_for_sweep

    units :

    degrees per second

    array([-9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999.], dtype=float32)

  • sweep_start_ray_index
    (sweep)
    int32
    0 483 966 1448 ... 2894 3376 3860

    standard_name :

    index_of_first_ray_in_sweep

    array([   0,  483,  966, 1448, 1931, 2412, 2894, 3376, 3860], dtype=int32)

  • sweep_end_ray_index
    (sweep)
    int32
    482 965 1447 ... 3375 3859 4342

    standard_name :

    index_of_last_ray_in_sweep

    array([ 482,  965, 1447, 1930, 2411, 2893, 3375, 3859, 4342], dtype=int32)

  • r_calib_time
    (r_calib)
    |S32
    b'2008-06-04T00:15:03Z'

    standard_name :

    radar_calibration_time_utc

    meta_group :

    radar_calibration

    array([b'2008-06-04T00:15:03Z'], dtype='|S32')

  • r_calib_pulse_width
    (r_calib)
    float32
    0.0

    standard_name :

    radar_calibration_pulse_width

    units :

    seconds

    meta_group :

    radar_calibration

    array([0.], dtype=float32)

  • r_calib_xmit_power_h
    (r_calib)
    float32
    145.3

    standard_name :

    calibrated_radar_xmit_power_h_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array([145.29], dtype=float32)

  • r_calib_xmit_power_v
    (r_calib)
    float32
    145.3

    standard_name :

    calibrated_radar_xmit_power_v_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array([145.29], dtype=float32)

  • r_calib_two_way_waveguide_loss_h
    (r_calib)
    float32
    -36.89

    standard_name :

    radar_calibration_two_way_waveguide_loss_h_channel

    units :

    dB

    meta_group :

    radar_calibration

    array([-36.888298], dtype=float32)

  • r_calib_two_way_waveguide_loss_v
    (r_calib)
    float32
    -36.89

    standard_name :

    radar_calibration_two_way_waveguide_loss_v_channel

    units :

    dB

    meta_group :

    radar_calibration

    array([-36.888298], dtype=float32)

  • r_calib_two_way_radome_loss_h
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    radar_calibration_two_way_radome_loss_h_channel

    units :

    dB

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_two_way_radome_loss_v
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    radar_calibration_two_way_radome_loss_v_channel

    units :

    dB

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_receiver_mismatch_loss
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    radar_calibration_receiver_mismatch_loss

    units :

    dB

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_radar_constant_h
    (r_calib)
    float32
    -70.72

    standard_name :

    calibrated_radar_constant_h_channel

    units :

    dB

    meta_group :

    radar_calibration

    array([-70.72], dtype=float32)

  • r_calib_radar_constant_v
    (r_calib)
    float32
    -70.72

    standard_name :

    calibrated_radar_constant_v_channel

    units :

    dB

    meta_group :

    radar_calibration

    array([-70.72], dtype=float32)

  • r_calib_antenna_gain_h
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_antenna_gain_h_channel

    units :

    dB

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_antenna_gain_v
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_antenna_gain_v_channel

    units :

    dB

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_noise_hc
    (r_calib)
    float32
    -114.7

    standard_name :

    calibrated_radar_receiver_noise_h_co_polar_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array([-114.66051], dtype=float32)

  • r_calib_noise_vc
    (r_calib)
    float32
    -114.7

    standard_name :

    calibrated_radar_receiver_noise_v_co_polar_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array([-114.66051], dtype=float32)

  • r_calib_noise_hx
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_receiver_noise_h_cross_polar_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_noise_vx
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_receiver_noise_v_cross_polar_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_receiver_gain_hc
    (r_calib)
    float32
    36.89

    standard_name :

    calibrated_radar_receiver_gain_h_co_polar_channel

    units :

    dB

    meta_group :

    radar_calibration

    array([36.8883], dtype=float32)

  • r_calib_receiver_gain_vc
    (r_calib)
    float32
    36.89

    standard_name :

    calibrated_radar_receiver_gain_v_co_polar_channel

    units :

    dB

    meta_group :

    radar_calibration

    array([36.8883], dtype=float32)

  • r_calib_receiver_gain_hx
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_receiver_gain_h_cross_polar_channel

    units :

    dB

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_receiver_gain_vx
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_receiver_gain_v_cross_polar_channel

    units :

    dB

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_base_dbz_1km_hc
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    radar_reflectivity_at_1km_at_zero_snr_h_co_polar_channel

    units :

    dBZ

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_base_dbz_1km_vc
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    radar_reflectivity_at_1km_at_zero_snr_v_co_polar_channel

    units :

    dBZ

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_base_dbz_1km_hx
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    radar_reflectivity_at_1km_at_zero_snr_h_cross_polar_channel

    units :

    dBZ

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_base_dbz_1km_vx
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    radar_reflectivity_at_1km_at_zero_snr_v_cross_polar_channel

    units :

    dBZ

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_sun_power_hc
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_sun_power_h_co_polar_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_sun_power_vc
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_sun_power_v_co_polar_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_sun_power_hx
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_sun_power_h_cross_polar_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_sun_power_vx
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_sun_power_v_cross_polar_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_noise_source_power_h
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    radar_calibration_noise_source_power_h_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_noise_source_power_v
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    radar_calibration_noise_source_power_v_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_power_measure_loss_h
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    radar_calibration_power_measurement_loss_h_channel

    units :

    dB

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_power_measure_loss_v
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    radar_calibration_power_measurement_loss_v_channel

    units :

    dB

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_coupler_forward_loss_h
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    radar_calibration_coupler_forward_loss_h_channel

    units :

    dB

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_coupler_forward_loss_v
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    radar_calibration_coupler_forward_loss_v_channel

    units :

    dB

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_zdr_correction
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_zdr_correction

    units :

    dB

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_ldr_correction_h
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_ldr_correction_h_channel

    units :

    dB

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_ldr_correction_v
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_ldr_correction_v_channel

    units :

    dB

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_system_phidp
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_system_phidp

    units :

    degrees

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_test_power_h
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    radar_calibration_test_power_h_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_test_power_v
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    radar_calibration_test_power_v_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_receiver_slope_hc
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_receiver_slope_h_co_polar_channel

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_receiver_slope_vc
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_receiver_slope_v_co_polar_channel

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_receiver_slope_hx
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_receiver_slope_h_cross_polar_channel

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • r_calib_receiver_slope_vx
    (r_calib)
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_receiver_slope_v_cross_polar_channel

    meta_group :

    radar_calibration

    array([-9999.], dtype=float32)

  • azimuth
    (time)
    float32
    121.5 122.2 123.0 ... 212.2 213.0

    standard_name :

    beam_azimuth_angle

    units :

    degrees

    array([121.5 , 122.25, 123.  , ..., 211.5 , 212.25, 213.  ],
          shape=(4343,), dtype=float32)

  • elevation
    (time)
    float32
    0.379 0.2362 0.1648 ... 12.81 12.81

    standard_name :

    beam_elevation_angle

    units :

    degrees

    positive :

    up

    array([ 0.379 ,  0.2362,  0.1648, ..., 12.8103, 12.8103, 12.8103],
          shape=(4343,), dtype=float32)

  • pulse_width
    (time)
    float32
    0.0 0.0 0.0 0.0 ... 0.0 0.0 0.0 0.0

    standard_name :

    transmitter_pulse_width

    units :

    seconds

    meta_group :

    instrument_parameters

    array([0., 0., 0., ..., 0., 0., 0.], shape=(4343,), dtype=float32)

  • prt
    (time)
    float32
    -9.999e+03 ... -9.999e+03

    standard_name :

    pulse_repetition_frequency

    units :

    seconds

    meta_group :

    instrument_parameters

    array([-9999., -9999., -9999., ..., -9999., -9999., -9999.],
          shape=(4343,), dtype=float32)

  • prt_ratio
    (time)
    float32
    -9.999e+03 ... -9.999e+03

    standard_name :

    pulse_repetition_frequency_ratio

    units :

    seconds

    meta_group :

    instrument_parameters

    array([-9999., -9999., -9999., ..., -9999., -9999., -9999.],
          shape=(4343,), dtype=float32)

  • nyquist_velocity
    (time)
    float32
    26.92 26.92 26.92 ... 26.92 26.92

    standard_name :

    unambiguous_doppler_velocity

    units :

    meters per second

    meta_group :

    instrument_parameters

    array([26.925, 26.925, 26.925, ..., 26.925, 26.925, 26.925],
          shape=(4343,), dtype=float32)

  • unambiguous_range
    (time)
    float32
    1.5e+05 1.5e+05 ... 1.5e+05 1.5e+05

    standard_name :

    unambiguous_range

    units :

    meters

    meta_group :

    instrument_parameters

    array([150000., 150000., 150000., ..., 150000., 150000., 150000.],
          shape=(4343,), dtype=float32)

  • antenna_transition
    (time)
    int8
    0 0 0 0 0 0 0 0 ... 0 0 0 0 0 0 0 0

    standard_name :

    antenna_is_in_transition_between_sweeps

    comment :

    1 if antenna is in transition, 0 otherwise

    array([0, 0, 0, ..., 0, 0, 0], shape=(4343,), dtype=int8)

  • n_samples
    (time)
    int32
    192 192 192 192 ... 192 192 192 192

    standard_name :

    number_of_samples_used_to_compute_moments

    meta_group :

    instrument_parameters

    array([192, 192, 192, ..., 192, 192, 192], shape=(4343,), dtype=int32)

  • r_calib_index
    (time)
    int8
    -1 -1 -1 -1 -1 ... -1 -1 -1 -1 -1

    standard_name :

    calibration_data_array_index_per_ray

    meta_group :

    radar_calibration

    comment :

    This is the index for the calibration which applies to this ray

    array([-1, -1, -1, ..., -1, -1, -1], shape=(4343,), dtype=int8)

  • measured_transmit_power_h
    (time)
    float32
    -9.999e+03 ... -9.999e+03

    standard_name :

    measured_radar_transmit_power_h_channel

    units :

    dBm

    meta_group :

    radar_parameters

    array([-9999., -9999., -9999., ..., -9999., -9999., -9999.],
          shape=(4343,), dtype=float32)

  • measured_transmit_power_v
    (time)
    float32
    -9.999e+03 ... -9.999e+03

    standard_name :

    measured_radar_transmit_power_v_channel

    units :

    dBm

    meta_group :

    radar_parameters

    array([-9999., -9999., -9999., ..., -9999., -9999., -9999.],
          shape=(4343,), dtype=float32)

  • scan_rate
    (time)
    float32
    -3.277e+04 ... -3.277e+04

    standard_name :

    antenna_angle_scan_rate

    units :

    degrees per second

    meta_group :

    instrument_parameters

    array([-32768., -32768., -32768., ..., -32768., -32768., -32768.],
          shape=(4343,), dtype=float32)

  • DBZ
    (time, range)
    float32
    -3.07 16.3 37.71 ... -8.67 nan

    long_name :

    Computed Horizontal Co-polar Reflectivit

    standard_name :

    equivalent_reflectivity_factor

    units :

    dBZ

    threshold_field_name :

    threshold_value :

    -9999.0

    sampling_ratio :

    1.0

    grid_mapping :

    grid_mapping

    array([[ -3.0696433 ,  16.299232  ,  37.70946   , ...,  -6.0401773 ,
              0.21002503,  -3.480046  ],
           [-10.929477  ,  13.470829  ,   6.5597186 , ...,  -0.71027195,
              1.2795594 ,  -1.5595036 ],
           [ -6.079263  ,  10.450549  ,   3.2391877 , ...,  -5.0203886 ,
             -0.8701691 ,  -3.5599947 ],
           ...,
           [ 16.839329  ,  29.410799  ,  27.680357  , ...,          nan,
             -6.4292603 , -15.1098995 ],
           [ 16.890852  ,  26.7494    ,  23.73978   , ...,          nan,
                     nan,  -8.660714  ],
           [ 16.359638  ,  27.870457  ,  30.130337  , ...,  -8.680257  ,
             -8.669597  ,          nan]], shape=(4343, 996), dtype=float32)

  • VR
    (time, range)
    float32
    -25.24 3.48 25.8 ... -12.92 nan

    long_name :

    Computed Velocity

    standard_name :

    radial_velocity_of_scatterers_away_from_instrument

    units :

    m/s

    threshold_field_name :

    threshold_value :

    -9999.0

    sampling_ratio :

    1.0

    grid_mapping :

    grid_mapping

    array([[-25.240273  ,   3.4801476 ,  25.799713  , ..., -18.63985   ,
             10.249873  ,  26.31008   ],
           [ -6.409851  ,  23.62002   , -26.610249  , ..., -16.64991   ,
             19.330154  , -20.600348  ],
           [ 26.710032  ,  24.829687  ,  -0.48010498, ...,   5.6598406 ,
             21.28002   ,  14.659968  ],
           ...,
           [  0.08015382,  -1.5098361 ,  -1.2800074 , ...,          nan,
             20.319809  , -19.020172  ],
           [ -0.04989166,  -0.849794  ,  -1.3797907 , ...,          nan,
                     nan,  -5.3997498 ],
           [ -0.07033906,  -0.97983944,  -0.97983944, ...,  -7.970397  ,
            -12.920303  ,          nan]], shape=(4343, 996), dtype=float32)

• Attributes: (14)

  Conventions :

  CF/Radial instrument_parameters radar_parameters radar_calibration geometry_correction

  version :

  1.2

  title :

  TIMREX

  institution :

  references :

  source :

  history :

  comment :

  instrument_name :

  SPOLRVP8

  site_name :

  scan_name :

  scan_id :

  0

  platform_is_mobile :

  false

  n_gates_vary :

  false

Extract CfRadial2 Groups and Subgroups

Now as we have the CfRadial1 Dataset we can work towards extracting the CfRadial2 groups and subgroups.

Extract CfRadial2 Root-Group

The following sections present the details of the information in the top-level (root) group of the data set.

We use a convenience function to extract the CfRadial2 root group from the CfRadial1 Dataset. We can call this function with one kwarg:

• optional=False - only mandatory data and metadata is imported, defaults to True

optional=True

root = xd.io.backends.cfradial1._get_required_root_dataset(ds)
with xr.set_options(
    display_expand_data_vars=True, display_expand_attrs=True, display_max_rows=1000
):
    display(root.load())

<xarray.Dataset> Size: 477B
Dimensions:              (sweep: 9)
Coordinates:
    latitude             float64 8B 22.53
    longitude            float64 8B 120.4
    altitude             float64 8B 45.0
Dimensions without coordinates: sweep
Data variables:
    volume_number        int32 4B 36
    platform_type        |S32 32B b'fixed'
    primary_axis         |S32 32B b'axis_z'
    status_str           |S1 1B b''
    instrument_type      |S32 32B b'radar'
    time_coverage_start  |S32 32B b'2008-06-04T00:15:03Z'
    time_coverage_end    |S32 32B b'2008-06-04T00:22:17Z'
    sweep_group_name     (sweep) <U7 252B 'sweep_0' 'sweep_1' ... 'sweep_8'
    sweep_fixed_angle    (sweep) float32 36B 0.4999 1.099 1.802 ... 9.102 12.8
Attributes:
    Conventions:         CF/Radial instrument_parameters radar_parameters rad...
    version:             1.2
    title:               TIMREX
    institution:         
    references:          
    source:              
    history:             
    comment:             
    instrument_name:     SPOLRVP8
    site_name:           
    scan_name:           
    scan_id:             0
    platform_is_mobile:  false

xarray.Dataset

• Dimensions:
  • sweep: 9
• Coordinates: (3)
  • latitude
    ()
    float64
    22.53

    standard_name :

    latitude

    units :

    degrees_north

    array(22.52669907)

  • longitude
    ()
    float64
    120.4

    standard_name :

    longitude

    units :

    degrees_east

    array(120.4335022)

  • altitude
    ()
    float64
    45.0

    standard_name :

    altitude

    units :

    meters

    positive :

    up

    array(45.00000179)

• Data variables: (9)
  • volume_number
    ()
    int32
    36

    standard_name :

    data_volume_index_number

    array(36, dtype=int32)

  • platform_type
    ()
    |S32
    b'fixed'

    standard_name :

    platform_type

    options :

    fixed, vehicle, ship, aircraft_fore, aircraft_aft, aircraft_tail, aircraft_belly, aircraft_roof, aircraft_nose, satellite_orbit, satellite_geostat

    array(b'fixed', dtype='|S32')

  • primary_axis
    ()
    |S32
    b'axis_z'

    standard_name :

    primary_axis_of_rotation

    options :

    axis_z, axis_y, axis_x

    array(b'axis_z', dtype='|S32')

  • status_str
    ()
    |S1
    b''

    standard_name :

    status_xml

    array(b'', dtype='|S1')

  • instrument_type
    ()
    |S32
    b'radar'

    standard_name :

    type_of_instrument

    options :

    radar, lidar

    meta_group :

    instrument_parameters

    array(b'radar', dtype='|S32')

  • time_coverage_start
    ()
    |S32
    b'2008-06-04T00:15:03Z'

    standard_name :

    data_volume_start_time_utc

    comment :

    ray times are relative to start time in secs

    array(b'2008-06-04T00:15:03Z', dtype='|S32')

  • time_coverage_end
    ()
    |S32
    b'2008-06-04T00:22:17Z'

    standard_name :

    data_volume_end_time_utc

    array(b'2008-06-04T00:22:17Z', dtype='|S32')

  • sweep_group_name
    (sweep)
    <U7
    'sweep_0' 'sweep_1' ... 'sweep_8'

    array(['sweep_0', 'sweep_1', 'sweep_2', 'sweep_3', 'sweep_4', 'sweep_5',
           'sweep_6', 'sweep_7', 'sweep_8'], dtype='<U7')

  • sweep_fixed_angle
    (sweep)
    float32
    0.4999 1.099 1.802 ... 9.102 12.8

    standard_name :

    beam_target_fixed_angle

    units :

    degrees

    array([ 0.4999,  1.0986,  1.8018,  2.5983,  3.598 ,  4.7021,  6.4984,
            9.1022, 12.7991], dtype=float32)

• Attributes: (13)

  Conventions :

  CF/Radial instrument_parameters radar_parameters radar_calibration geometry_correction

  version :

  1.2

  title :

  TIMREX

  institution :

  references :

  source :

  history :

  comment :

  instrument_name :

  SPOLRVP8

  site_name :

  scan_name :

  scan_id :

  0

  platform_is_mobile :

  false

optional=False

root = xd.io.backends.cfradial1._get_required_root_dataset(ds, optional=False)
with xr.set_options(
    display_expand_data_vars=True, display_expand_attrs=True, display_max_rows=1000
):
    display(root)

<xarray.Dataset> Size: 380B
Dimensions:              (sweep: 9)
Coordinates:
    latitude             float64 8B 22.53
    longitude            float64 8B 120.4
    altitude             float64 8B 45.0
Dimensions without coordinates: sweep
Data variables:
    volume_number        int32 4B 36
    time_coverage_start  |S32 32B b'2008-06-04T00:15:03Z'
    time_coverage_end    |S32 32B b'2008-06-04T00:22:17Z'
    sweep_group_name     (sweep) <U7 252B 'sweep_0' 'sweep_1' ... 'sweep_8'
    sweep_fixed_angle    (sweep) float32 36B 0.4999 1.099 1.802 ... 9.102 12.8
Attributes:
    Conventions:         CF/Radial instrument_parameters radar_parameters rad...
    version:             1.2
    title:               TIMREX
    institution:         
    references:          
    source:              
    history:             
    comment:             
    instrument_name:     SPOLRVP8
    platform_is_mobile:  false

xarray.Dataset

• Dimensions:
  • sweep: 9
• Coordinates: (3)
  • latitude
    ()
    float64
    22.53

    standard_name :

    latitude

    units :

    degrees_north

    array(22.52669907)

  • longitude
    ()
    float64
    120.4

    standard_name :

    longitude

    units :

    degrees_east

    array(120.4335022)

  • altitude
    ()
    float64
    45.0

    standard_name :

    altitude

    units :

    meters

    positive :

    up

    array(45.00000179)

• Data variables: (5)
  • volume_number
    ()
    int32
    36

    standard_name :

    data_volume_index_number

    array(36, dtype=int32)

  • time_coverage_start
    ()
    |S32
    b'2008-06-04T00:15:03Z'

    standard_name :

    data_volume_start_time_utc

    comment :

    ray times are relative to start time in secs

    array(b'2008-06-04T00:15:03Z', dtype='|S32')

  • time_coverage_end
    ()
    |S32
    b'2008-06-04T00:22:17Z'

    standard_name :

    data_volume_end_time_utc

    array(b'2008-06-04T00:22:17Z', dtype='|S32')

  • sweep_group_name
    (sweep)
    <U7
    'sweep_0' 'sweep_1' ... 'sweep_8'

    array(['sweep_0', 'sweep_1', 'sweep_2', 'sweep_3', 'sweep_4', 'sweep_5',
           'sweep_6', 'sweep_7', 'sweep_8'], dtype='<U7')

  • sweep_fixed_angle
    (sweep)
    float32
    0.4999 1.099 1.802 ... 9.102 12.8

    standard_name :

    beam_target_fixed_angle

    units :

    degrees

    array([ 0.4999,  1.0986,  1.8018,  2.5983,  3.598 ,  4.7021,  6.4984,
            9.1022, 12.7991], dtype=float32)

• Attributes: (10)

  Conventions :

  CF/Radial instrument_parameters radar_parameters radar_calibration geometry_correction

  version :

  1.2

  title :

  TIMREX

  institution :

  references :

  source :

  history :

  comment :

  instrument_name :

  SPOLRVP8

  platform_is_mobile :

  false

Extract Root-Group metadata groups

The Cfradial2 Data Model has a notion of root group metadata groups. Those groups provide additional metadata covering other aspects of the radar system.

The radar_parameters sub-group

This group holds radar parameters specific to a radar instrument. It’s implemented as dictionary where the value can be used to override the name.

display(xd.model.radar_parameters_subgroup)

{'radar_antenna_gain_h': None,
 'radar_antenna_gain_v': None,
 'radar_beam_width_h': None,
 'radar_beam_width_v': None,
 'half_power_beam_width_h': 'radar_beam_width_h',
 'half_power_beam_width_v': 'radar_beam_width_v',
 'radar_receiver_bandwidth': None,
 'radar_rx_bandwidth': 'radar_receiver_bandwidth'}

Again we use a convenience function to extract the group.

radar_parameters = xd.io.backends.cfradial1._get_subgroup(
    ds, xd.model.radar_parameters_subgroup
)
display(radar_parameters.load())

<xarray.Dataset> Size: 20B
Dimensions:                   ()
Data variables:
    radar_beam_width_h        float32 4B 0.92
    radar_receiver_bandwidth  float32 4B -9.999e+03
    radar_antenna_gain_v      float32 4B 45.15
    radar_antenna_gain_h      float32 4B 45.15
    radar_beam_width_v        float32 4B 0.92

xarray.Dataset

• Dimensions:
• Data variables: (5)
  • radar_beam_width_h
    ()
    float32
    0.92

    standard_name :

    half_power_radar_beam_width_h_channel

    units :

    degrees

    meta_group :

    radar_parameters

    array(0.92, dtype=float32)

  • radar_receiver_bandwidth
    ()
    float32
    -9.999e+03

    standard_name :

    radar_receiver_bandwidth

    units :

    s-1

    meta_group :

    radar_parameters

    array(-9999., dtype=float32)

  • radar_antenna_gain_v
    ()
    float32
    45.15

    standard_name :

    nominal_radar_antenna_gain_v_channel

    units :

    dB

    meta_group :

    radar_parameters

    array(45.15, dtype=float32)

  • radar_antenna_gain_h
    ()
    float32
    45.15

    standard_name :

    nominal_radar_antenna_gain_h_channel

    units :

    dB

    meta_group :

    radar_parameters

    array(45.15, dtype=float32)

  • radar_beam_width_v
    ()
    float32
    0.92

    standard_name :

    half_power_radar_beam_width_v_channel

    units :

    degrees

    meta_group :

    radar_parameters

    array(0.92, dtype=float32)

The radar_calibration sub-group

For a radar, a different calibration is required for each pulse width. Therefore the calibration variables are arrays. If only one calibration is available it is squeezed by the reader.

display(xd.model.radar_calibration_subgroup)

{'calib_index': None,
 'time': None,
 'pulse_width': None,
 'antenna_gain_h': None,
 'antenna_gain_v': None,
 'ant_gain_h': 'antenna_gain_h',
 'ant_gain_v': 'antenna_gain_v',
 'xmit_power_h': None,
 'xmit_power_v': None,
 'tx_power_h': 'xmit_power_h',
 'tx_power_v': 'xmit_power_v',
 'two_way_waveguide_loss_h': None,
 'two_way_waveguide_loss_v': None,
 'two_way_radome_loss_h': None,
 'two_way_radome_loss_v': None,
 'receiver_mismatch_loss': None,
 'receiver_mismatch_loss_h': None,
 'receiver_mismatch_loss_v': None,
 'rx_loss_h': 'receiver_mismatch_loss_h',
 'rx_loss_v': 'receiver_mismatch_loss_v',
 'radar_constant_h': None,
 'radar_constant_v': None,
 'probert_jones_correction': None,
 'dielectric_factor_used': None,
 'noise_hc': None,
 'noise_vc': None,
 'noise_hx': None,
 'noise_vx': None,
 'receiver_gain_hc': None,
 'receiver_gain_vc': None,
 'receiver_gain_hx': None,
 'receiver_gain_vx': None,
 'base_1km_hc': None,
 'base_dbz_1km_hc': 'base_1km_hc',
 'base_1km_vc': None,
 'base_dbz_1km_vc': 'base_1km_vc',
 'base_1km_hx': None,
 'base_dbz_1km_hx': 'base_1km_hx',
 'base_1km_vx': None,
 'base_dbz_1km_vx': 'base_1km_vx',
 'sun_power_hc': None,
 'sun_power_vc': None,
 'sun_power_hx': None,
 'sun_power_vx': None,
 'noise_source_power_h': None,
 'noise_source_power_v': None,
 'noise_power_short_pulse_h': 'noise_source_power_h',
 'noise_power_short_pulse_v': 'noise_source_power_v',
 'noise_power_h': 'noise_source_power_h',
 'noise_power_v': 'noise_source_power_v',
 'power_measure_loss_h': None,
 'power_measure_loss_v': None,
 'coupler_forward_loss_h': None,
 'coupler_forward_loss_v': None,
 'zdr_correction': None,
 'ldr_correction_h': None,
 'ldr_correction_v': None,
 'system_phidp': None,
 'test_power_h': None,
 'test_power_v': None,
 'receiver_slope_hc': None,
 'receiver_slope_vc': None,
 'receiver_slope_hx': None,
 'receiver_slope_vx': None,
 'k_squared_water': None,
 'i0_dbm_hc': None,
 'i0_dbm_vc': None,
 'i0_dbm_hx': None,
 'i0_dbm_vx': None,
 'dynamic_range_db_hc': None,
 'dynamic_range_db_vc': None,
 'dynamic_range_db_hx': None,
 'dynamic_range_db_vx': None,
 'dbz_correction': None}

Again we use a convenience function to extract the group.

radar_calibration = xd.io.backends.cfradial1._get_radar_calibration(ds)
with xr.set_options(display_expand_data_vars=True):
    if radar_calibration:
        display(radar_calibration.load())

<xarray.Dataset> Size: 208B
Dimensions:                   ()
Data variables: (12/45)
    time                      |S32 32B b'2008-06-04T00:15:03Z'
    pulse_width               float32 4B 0.0
    xmit_power_h              float32 4B 145.3
    xmit_power_v              float32 4B 145.3
    two_way_waveguide_loss_h  float32 4B -36.89
    two_way_waveguide_loss_v  float32 4B -36.89
    ...                        ...
    test_power_h              float32 4B -9.999e+03
    test_power_v              float32 4B -9.999e+03
    receiver_slope_hc         float32 4B -9.999e+03
    receiver_slope_vc         float32 4B -9.999e+03
    receiver_slope_hx         float32 4B -9.999e+03
    receiver_slope_vx         float32 4B -9.999e+03

xarray.Dataset

• Dimensions:
• Data variables: (45)
  • time
    ()
    |S32
    b'2008-06-04T00:15:03Z'

    standard_name :

    radar_calibration_time_utc

    meta_group :

    radar_calibration

    array(b'2008-06-04T00:15:03Z', dtype='|S32')

  • pulse_width
    ()
    float32
    0.0

    standard_name :

    radar_calibration_pulse_width

    units :

    seconds

    meta_group :

    radar_calibration

    array(0., dtype=float32)

  • xmit_power_h
    ()
    float32
    145.3

    standard_name :

    calibrated_radar_xmit_power_h_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array(145.29, dtype=float32)

  • xmit_power_v
    ()
    float32
    145.3

    standard_name :

    calibrated_radar_xmit_power_v_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array(145.29, dtype=float32)

  • two_way_waveguide_loss_h
    ()
    float32
    -36.89

    standard_name :

    radar_calibration_two_way_waveguide_loss_h_channel

    units :

    dB

    meta_group :

    radar_calibration

    array(-36.888298, dtype=float32)

  • two_way_waveguide_loss_v
    ()
    float32
    -36.89

    standard_name :

    radar_calibration_two_way_waveguide_loss_v_channel

    units :

    dB

    meta_group :

    radar_calibration

    array(-36.888298, dtype=float32)

  • two_way_radome_loss_h
    ()
    float32
    -9.999e+03

    standard_name :

    radar_calibration_two_way_radome_loss_h_channel

    units :

    dB

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • two_way_radome_loss_v
    ()
    float32
    -9.999e+03

    standard_name :

    radar_calibration_two_way_radome_loss_v_channel

    units :

    dB

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • receiver_mismatch_loss
    ()
    float32
    -9.999e+03

    standard_name :

    radar_calibration_receiver_mismatch_loss

    units :

    dB

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • radar_constant_h
    ()
    float32
    -70.72

    standard_name :

    calibrated_radar_constant_h_channel

    units :

    dB

    meta_group :

    radar_calibration

    array(-70.72, dtype=float32)

  • radar_constant_v
    ()
    float32
    -70.72

    standard_name :

    calibrated_radar_constant_v_channel

    units :

    dB

    meta_group :

    radar_calibration

    array(-70.72, dtype=float32)

  • antenna_gain_h
    ()
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_antenna_gain_h_channel

    units :

    dB

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • antenna_gain_v
    ()
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_antenna_gain_v_channel

    units :

    dB

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • noise_hc
    ()
    float32
    -114.7

    standard_name :

    calibrated_radar_receiver_noise_h_co_polar_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array(-114.66051, dtype=float32)

  • noise_vc
    ()
    float32
    -114.7

    standard_name :

    calibrated_radar_receiver_noise_v_co_polar_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array(-114.66051, dtype=float32)

  • noise_hx
    ()
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_receiver_noise_h_cross_polar_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • noise_vx
    ()
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_receiver_noise_v_cross_polar_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • receiver_gain_hc
    ()
    float32
    36.89

    standard_name :

    calibrated_radar_receiver_gain_h_co_polar_channel

    units :

    dB

    meta_group :

    radar_calibration

    array(36.8883, dtype=float32)

  • receiver_gain_vc
    ()
    float32
    36.89

    standard_name :

    calibrated_radar_receiver_gain_v_co_polar_channel

    units :

    dB

    meta_group :

    radar_calibration

    array(36.8883, dtype=float32)

  • receiver_gain_hx
    ()
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_receiver_gain_h_cross_polar_channel

    units :

    dB

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • receiver_gain_vx
    ()
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_receiver_gain_v_cross_polar_channel

    units :

    dB

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • base_1km_hc
    ()
    float32
    -9.999e+03

    standard_name :

    radar_reflectivity_at_1km_at_zero_snr_h_co_polar_channel

    units :

    dBZ

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • base_1km_vc
    ()
    float32
    -9.999e+03

    standard_name :

    radar_reflectivity_at_1km_at_zero_snr_v_co_polar_channel

    units :

    dBZ

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • base_1km_hx
    ()
    float32
    -9.999e+03

    standard_name :

    radar_reflectivity_at_1km_at_zero_snr_h_cross_polar_channel

    units :

    dBZ

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • base_1km_vx
    ()
    float32
    -9.999e+03

    standard_name :

    radar_reflectivity_at_1km_at_zero_snr_v_cross_polar_channel

    units :

    dBZ

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • sun_power_hc
    ()
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_sun_power_h_co_polar_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • sun_power_vc
    ()
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_sun_power_v_co_polar_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • sun_power_hx
    ()
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_sun_power_h_cross_polar_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • sun_power_vx
    ()
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_sun_power_v_cross_polar_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • noise_source_power_h
    ()
    float32
    -9.999e+03

    standard_name :

    radar_calibration_noise_source_power_h_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • noise_source_power_v
    ()
    float32
    -9.999e+03

    standard_name :

    radar_calibration_noise_source_power_v_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • power_measure_loss_h
    ()
    float32
    -9.999e+03

    standard_name :

    radar_calibration_power_measurement_loss_h_channel

    units :

    dB

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • power_measure_loss_v
    ()
    float32
    -9.999e+03

    standard_name :

    radar_calibration_power_measurement_loss_v_channel

    units :

    dB

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • coupler_forward_loss_h
    ()
    float32
    -9.999e+03

    standard_name :

    radar_calibration_coupler_forward_loss_h_channel

    units :

    dB

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • coupler_forward_loss_v
    ()
    float32
    -9.999e+03

    standard_name :

    radar_calibration_coupler_forward_loss_v_channel

    units :

    dB

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • zdr_correction
    ()
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_zdr_correction

    units :

    dB

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • ldr_correction_h
    ()
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_ldr_correction_h_channel

    units :

    dB

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • ldr_correction_v
    ()
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_ldr_correction_v_channel

    units :

    dB

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • system_phidp
    ()
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_system_phidp

    units :

    degrees

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • test_power_h
    ()
    float32
    -9.999e+03

    standard_name :

    radar_calibration_test_power_h_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • test_power_v
    ()
    float32
    -9.999e+03

    standard_name :

    radar_calibration_test_power_v_channel

    units :

    dBm

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • receiver_slope_hc
    ()
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_receiver_slope_h_co_polar_channel

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • receiver_slope_vc
    ()
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_receiver_slope_v_co_polar_channel

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • receiver_slope_hx
    ()
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_receiver_slope_h_cross_polar_channel

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

  • receiver_slope_vx
    ()
    float32
    -9.999e+03

    standard_name :

    calibrated_radar_receiver_slope_v_cross_polar_channel

    meta_group :

    radar_calibration

    array(-9999., dtype=float32)

The georeference_correction sub-group

The following additional variables are used to quantify errors in the georeference data for moving platforms. These are constant for a volume.

display(xd.model.georeferencing_correction_subgroup)

{'azimuth_correction': None,
 'elevation_correction': None,
 'range_correction': None,
 'longitude_correction': None,
 'latitude_correction': None,
 'pressure_altitude_correction': None,
 'altitude_correction': 'radar_altitude_correction',
 'radar_altitude_correction': None,
 'eastward_velocity_correction': 'eastward_ground_speed_correction',
 'eastward_ground_speed_correction': None,
 'northward_velocity_correction': 'northward_ground_speed_correction',
 'northward_ground_speed_correction': None,
 'vertical_velocity_correction': None,
 'heading_correction': None,
 'roll_correction': None,
 'pitch_correction': None,
 'drift_correction': None,
 'rotation_correction': None,
 'tilt_correction': None}

Again we use a convenience function to extract the group.

georeference_correction = xd.io.backends.cfradial1._get_subgroup(
    ds, xd.model.georeferencing_correction_subgroup
)
with xr.set_options(display_expand_data_vars=True):
    display(georeference_correction.load())

<xarray.Dataset> Size: 64B
Dimensions:                            ()
Data variables: (12/16)
    longitude_correction               float32 4B 0.0
    rotation_correction                float32 4B 0.0
    pitch_correction                   float32 4B 0.0
    elevation_correction               float32 4B 0.0
    northward_ground_speed_correction  float32 4B 0.0
    latitude_correction                float32 4B 0.0
    ...                                 ...
    eastward_ground_speed_correction   float32 4B 0.0
    roll_correction                    float32 4B 0.0
    tilt_correction                    float32 4B 0.0
    vertical_velocity_correction       float32 4B 0.0
    drift_correction                   float32 4B 0.0
    azimuth_correction                 float32 4B 0.0

xarray.Dataset

• Dimensions:
• Data variables: (16)
  • longitude_correction
    ()
    float32
    0.0

    standard_name :

    longitude_correction

    units :

    degrees

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • rotation_correction
    ()
    float32
    0.0

    standard_name :

    beam_rotation_angle_relative_to_platform_correction

    units :

    degrees

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • pitch_correction
    ()
    float32
    0.0

    standard_name :

    platform_pitch_angle_correction

    units :

    degrees

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • elevation_correction
    ()
    float32
    0.0

    standard_name :

    beam_elevation_angle_correction

    units :

    degrees

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • northward_ground_speed_correction
    ()
    float32
    0.0

    standard_name :

    platform_northward_velocity_correction

    units :

    meters per second

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • latitude_correction
    ()
    float32
    0.0

    standard_name :

    latitude_correction

    units :

    degrees

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • pressure_altitude_correction
    ()
    float32
    0.0

    standard_name :

    pressure_altitude_correction

    units :

    meters

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • radar_altitude_correction
    ()
    float32
    0.0

    standard_name :

    altitude_correction

    units :

    meters

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • range_correction
    ()
    float32
    0.0

    standard_name :

    range_to_center_of_measurement_volume_correction

    units :

    meters

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • heading_correction
    ()
    float32
    0.0

    standard_name :

    platform_heading_angle_correction

    units :

    degrees

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • eastward_ground_speed_correction
    ()
    float32
    0.0

    standard_name :

    platform_eastward_velocity_correction

    units :

    meters per second

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • roll_correction
    ()
    float32
    0.0

    standard_name :

    platform_roll_angle_correction

    units :

    degrees

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • tilt_correction
    ()
    float32
    0.0

    standard_name :

    beam_tilt_angle_relative_to_platform_correction

    units :

    degrees

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • vertical_velocity_correction
    ()
    float32
    0.0

    standard_name :

    platform_vertical_velocity_correction

    units :

    meters per second

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • drift_correction
    ()
    float32
    0.0

    standard_name :

    platform_drift_angle_correction

    units :

    degrees

    meta_group :

    geometry_correction

    array(0., dtype=float32)

  • azimuth_correction
    ()
    float32
    0.0

    standard_name :

    azimuth_angle_correction

    units :

    degrees

    meta_group :

    geometry_correction

    array(0., dtype=float32)

Sweep groups

This section provides details of the information in each sweep group. The name of the sweep groups is found in the sweep_group_name array variable in the root group.

root.sweep_group_name

<xarray.DataArray 'sweep_group_name' (sweep: 9)> Size: 252B
array(['sweep_0', 'sweep_1', 'sweep_2', 'sweep_3', 'sweep_4', 'sweep_5',
       'sweep_6', 'sweep_7', 'sweep_8'], dtype='<U7')
Coordinates:
    latitude   float64 8B 22.53
    longitude  float64 8B 120.4
    altitude   float64 8B 45.0
Dimensions without coordinates: sweep

xarray.DataArray

'sweep_group_name'

• sweep: 9

• 'sweep_0' 'sweep_1' 'sweep_2' ... 'sweep_6' 'sweep_7' 'sweep_8'

  array(['sweep_0', 'sweep_1', 'sweep_2', 'sweep_3', 'sweep_4', 'sweep_5',
         'sweep_6', 'sweep_7', 'sweep_8'], dtype='<U7')

• Coordinates: (3)
  • latitude
    ()
    float64
    22.53

    standard_name :

    latitude

    units :

    degrees_north

    array(22.52669907)

  • longitude
    ()
    float64
    120.4

    standard_name :

    longitude

    units :

    degrees_east

    array(120.4335022)

  • altitude
    ()
    float64
    45.0

    standard_name :

    altitude

    units :

    meters

    positive :

    up

    array(45.00000179)

Again we use a convenience function to extract the different sweep groups. We can call this function with kwargs:

• optional=False - only mandatory data and metadata is imported, defaults to True

• first_dim="time - return first dimension as time, defaults toauto (return either as azimuth (PPI) or elevation (RHI)to time

• site_as_coords=False - do not add radar site coordinates to the Sweep-Dataset, defaults to True

Examining first sweep with default kwargs.

sweeps = xd.io.backends.cfradial1._get_sweep_groups(ds)
with xr.set_options(display_expand_data_vars=True):
    display(sweeps["sweep_0"])

<xarray.Dataset> Size: 4MB
Dimensions:                    (azimuth: 483, range: 996)
Coordinates:
  * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
    elevation                  (azimuth) float32 2kB 0.5164 0.5219 ... 0.5219
    time                       (azimuth) datetime64[ns] 4kB 2008-06-04T00:15:...
  * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
    latitude                   float64 8B 22.53
    longitude                  float64 8B 120.4
    altitude                   float64 8B 45.0
Data variables: (12/18)
    sweep_number               int32 4B 0
    sweep_mode                 <U20 80B 'azimuth_surveillance'
    prt_mode                   |S32 32B b'not_set'
    follow_mode                |S32 32B b'not_set'
    sweep_fixed_angle          float32 4B 0.4999
    pulse_width                (azimuth) float32 2kB 0.0 0.0 0.0 ... 0.0 0.0 0.0
    ...                         ...
    r_calib_index              (azimuth) int8 483B -1 -1 -1 -1 ... -1 -1 -1 -1
    measured_transmit_power_h  (azimuth) float32 2kB -9.999e+03 ... -9.999e+03
    measured_transmit_power_v  (azimuth) float32 2kB -9.999e+03 ... -9.999e+03
    scan_rate                  (azimuth) float32 2kB -3.277e+04 ... -3.277e+04
    DBZ                        (azimuth, range) float32 2MB 20.7 39.97 ... -1.32
    VR                         (azimuth, range) float32 2MB -23.38 ... -25.39

xarray.Dataset

• Dimensions:
  • azimuth: 483
  • range: 996
• Coordinates: (7)
  • azimuth
    (azimuth)
    float32
    0.0 0.75 1.5 ... 357.8 358.5 359.2

    standard_name :

    beam_azimuth_angle

    units :

    degrees

    array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],
          shape=(483,), dtype=float32)

  • elevation
    (azimuth)
    float32
    0.5164 0.5219 ... 0.5219 0.5219

    standard_name :

    beam_elevation_angle

    units :

    degrees

    positive :

    up

    array([0.5164, 0.5219, 0.5164, 0.5219, 0.5164, 0.5219, 0.5219, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5219, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5109, 0.5109, 0.5109, 0.5109,
           0.5109, 0.5109, 0.5109, 0.5109, 0.5109, 0.5109, 0.5109, 0.5109,
    ...
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219], dtype=float32)

  • time
    (azimuth)
    datetime64[ns]
    2008-06-04T00:15:34 ... 2008-06-...

    standard_name :

    time

    long_name :

    time in seconds since volume start

    comment :

    times are relative to the volume start_time

    array(['2008-06-04T00:15:34.000000000', '2008-06-04T00:15:34.000000000',
           '2008-06-04T00:15:34.000000000', ..., '2008-06-04T00:15:33.000000000',
           '2008-06-04T00:15:33.000000000', '2008-06-04T00:15:34.000000000'],
          shape=(483,), dtype='datetime64[ns]')

  • range
    (range)
    float32
    150.0 300.0 ... 1.492e+05 1.494e+05

    standard_name :

    range_to_center_of_measurement_volume

    long_name :

    Range from instrument to center of gate

    units :

    meters

    spacing_is_constant :

    true

    meters_to_center_of_first_gate :

    150.00000596046448

    meters_between_gates :

    150.00000596046448

    array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,
           149250.     , 149400.     ], shape=(996,), dtype=float32)

  • latitude
    ()
    float64
    22.53

    standard_name :

    latitude

    units :

    degrees_north

    array(22.52669907)

  • longitude
    ()
    float64
    120.4

    standard_name :

    longitude

    units :

    degrees_east

    array(120.4335022)

  • altitude
    ()
    float64
    45.0

    standard_name :

    altitude

    units :

    meters

    positive :

    up

    array(45.00000179)

• Data variables: (18)
  • sweep_number
    ()
    int32
    0

    standard_name :

    sweep_index_number_0_based

    array(0, dtype=int32)

  • sweep_mode
    ()
    <U20
    'azimuth_surveillance'

    standard_name :

    scan_mode_for_sweep

    options :

    sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

    array('azimuth_surveillance', dtype='<U20')

  • prt_mode
    ()
    |S32
    b'not_set'

    standard_name :

    transmit_pulse_mode

    options :

    fixed, staggered, dual

    meta_group :

    radar_parameters

    array(b'not_set', dtype='|S32')

  • follow_mode
    ()
    |S32
    b'not_set'

    standard_name :

    follow_mode_for_scan_strategy

    options :

    none, sun, vehicle, aircraft, target, manual

    meta_group :

    instrument_parameters

    array(b'not_set', dtype='|S32')

  • sweep_fixed_angle
    ()
    float32
    0.4999

    standard_name :

    beam_target_fixed_angle

    units :

    degrees

    array(0.4999, dtype=float32)

  • pulse_width
    (azimuth)
    float32
    0.0 0.0 0.0 0.0 ... 0.0 0.0 0.0 0.0

    standard_name :

    transmitter_pulse_width

    units :

    seconds

    meta_group :

    instrument_parameters

    array([0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0.], dtype=float32)

  • prt
    (azimuth)
    float32
    -9.999e+03 ... -9.999e+03

    standard_name :

    pulse_repetition_frequency

    units :

    seconds

    meta_group :

    instrument_parameters

    array([-9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
    ...
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999.], dtype=float32)

  • prt_ratio
    (azimuth)
    float32
    -9.999e+03 ... -9.999e+03

    standard_name :

    pulse_repetition_frequency_ratio

    units :

    seconds

    meta_group :

    instrument_parameters

    array([-9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
    ...
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999.], dtype=float32)

  • nyquist_velocity
    (azimuth)
    float32
    26.92 26.92 26.92 ... 26.92 26.92

    standard_name :

    unambiguous_doppler_velocity

    units :

    meters per second

    meta_group :

    instrument_parameters

    array([26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
    ...
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925], dtype=float32)

  • unambiguous_range
    (azimuth)
    float32
    1.5e+05 1.5e+05 ... 1.5e+05 1.5e+05

    standard_name :

    unambiguous_range

    units :

    meters

    meta_group :

    instrument_parameters

    array([150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
    ...
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.],
          dtype=float32)

  • antenna_transition
    (azimuth)
    int8
    0 0 0 0 0 0 0 0 ... 0 0 0 0 0 0 0 0

    standard_name :

    antenna_is_in_transition_between_sweeps

    comment :

    1 if antenna is in transition, 0 otherwise

    array([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
          dtype=int8)

  • n_samples
    (azimuth)
    int32
    192 192 192 192 ... 192 192 192 192

    standard_name :

    number_of_samples_used_to_compute_moments

    meta_group :

    instrument_parameters

    array([192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192], dtype=int32)

  • r_calib_index
    (azimuth)
    int8
    -1 -1 -1 -1 -1 ... -1 -1 -1 -1 -1

    standard_name :

    calibration_data_array_index_per_ray

    meta_group :

    radar_calibration

    comment :

    This is the index for the calibration which applies to this ray

    array([-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1], dtype=int8)

  • measured_transmit_power_h
    (azimuth)
    float32
    -9.999e+03 ... -9.999e+03

    standard_name :

    measured_radar_transmit_power_h_channel

    units :

    dBm

    meta_group :

    radar_parameters

    array([-9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
    ...
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999.], dtype=float32)

  • measured_transmit_power_v
    (azimuth)
    float32
    -9.999e+03 ... -9.999e+03

    standard_name :

    measured_radar_transmit_power_v_channel

    units :

    dBm

    meta_group :

    radar_parameters

    array([-9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
    ...
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999.], dtype=float32)

  • scan_rate
    (azimuth)
    float32
    -3.277e+04 ... -3.277e+04

    standard_name :

    antenna_angle_scan_rate

    units :

    degrees per second

    meta_group :

    instrument_parameters

    array([-32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
    ...
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.],
          dtype=float32)

  • DBZ
    (azimuth, range)
    float32
    20.7 39.97 29.65 ... -3.16 -1.32

    long_name :

    Computed Horizontal Co-polar Reflectivit

    standard_name :

    equivalent_reflectivity_factor

    units :

    dBZ

    threshold_field_name :

    threshold_value :

    -9999.0

    sampling_ratio :

    1.0

    grid_mapping :

    grid_mapping

    array([[ 20.699957  ,  39.96934   ,  29.650644  , ...,  -2.7995949 ,
             -3.5493348 ,  -1.6501119 ],
           [ 13.829709  ,  35.710747  ,   8.869345  , ..., -18.780428  ,
             -3.0803032 ,  -4.5193777 ],
           [ -9.1297455 ,  14.810412  ,   4.539685  , ...,   0.17982224,
             -0.5503748 ,  -3.519132  ],
           ...,
           [  5.8899274 ,  26.049406  ,  32.379555  , ...,  -2.550866  ,
             -1.060269  ,  -1.9006175 ],
           [  0.959765  ,  23.579884  ,   9.29929   , ...,  -8.680257  ,
             -5.039932  ,  -2.4105117 ],
           [ 20.079912  ,  39.15031   ,  13.190121  , ...,  -4.9191203 ,
             -3.1602516 ,  -1.3196578 ]], shape=(483, 996), dtype=float32)

  • VR
    (azimuth, range)
    float32
    -23.38 10.22 1.17 ... 20.63 -25.39

    long_name :

    Computed Velocity

    standard_name :

    radial_velocity_of_scatterers_away_from_instrument

    units :

    m/s

    threshold_field_name :

    threshold_value :

    -9999.0

    sampling_ratio :

    1.0

    grid_mapping :

    grid_mapping

    array([[-23.380377  ,  10.219611  ,   1.1695913 , ...,  22.359642  ,
             -2.2598467 ,  23.109653  ],
           [  8.669698  ,   8.860268  ,   1.109885  , ...,  16.950077  ,
            -17.420368  , -16.98034   ],
           [  4.4796166 ,   4.9597216 ,  -0.7999023 , ..., -22.860195  ,
             25.97965   , -22.330198  ],
           ...,
           [-21.76994   , -20.16032   ,   1.0599933 , ...,  16.92963   ,
            -25.179747  , -10.590118  ],
           [  8.189593  ,   8.69996   ,  -0.16030763, ..., -26.499832  ,
            -18.880312  ,  18.109854  ],
           [ 10.419995  ,  10.270321  ,   1.5000213 , ..., -11.900388  ,
             20.629791  , -25.389946  ]], shape=(483, 996), dtype=float32)

Examining first sweep with optional=False

sweeps = xd.io.backends.cfradial1._get_sweep_groups(ds, optional=False)
with xr.set_options(display_expand_data_vars=True):
    display(sweeps["sweep_0"])

<xarray.Dataset> Size: 4MB
Dimensions:            (azimuth: 483, range: 996)
Coordinates:
  * azimuth            (azimuth) float32 2kB 0.0 0.75 1.5 ... 357.8 358.5 359.2
    elevation          (azimuth) float32 2kB 0.5164 0.5219 ... 0.5219 0.5219
    time               (azimuth) datetime64[ns] 4kB 2008-06-04T00:15:34 ... 2...
  * range              (range) float32 4kB 150.0 300.0 ... 1.492e+05 1.494e+05
    latitude           float64 8B 22.53
    longitude          float64 8B 120.4
    altitude           float64 8B 45.0
Data variables:
    sweep_number       int32 4B 0
    sweep_mode         <U20 80B 'azimuth_surveillance'
    prt_mode           |S32 32B b'not_set'
    follow_mode        |S32 32B b'not_set'
    sweep_fixed_angle  float32 4B 0.4999
    DBZ                (azimuth, range) float32 2MB 20.7 39.97 ... -3.16 -1.32
    VR                 (azimuth, range) float32 2MB -23.38 10.22 ... -25.39

xarray.Dataset

• Dimensions:
  • azimuth: 483
  • range: 996
• Coordinates: (7)
  • azimuth
    (azimuth)
    float32
    0.0 0.75 1.5 ... 357.8 358.5 359.2

    standard_name :

    beam_azimuth_angle

    units :

    degrees

    array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],
          shape=(483,), dtype=float32)

  • elevation
    (azimuth)
    float32
    0.5164 0.5219 ... 0.5219 0.5219

    standard_name :

    beam_elevation_angle

    units :

    degrees

    positive :

    up

    array([0.5164, 0.5219, 0.5164, 0.5219, 0.5164, 0.5219, 0.5219, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5219, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5109, 0.5109, 0.5109, 0.5109,
           0.5109, 0.5109, 0.5109, 0.5109, 0.5109, 0.5109, 0.5109, 0.5109,
    ...
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219], dtype=float32)

  • time
    (azimuth)
    datetime64[ns]
    2008-06-04T00:15:34 ... 2008-06-...

    standard_name :

    time

    long_name :

    time in seconds since volume start

    comment :

    times are relative to the volume start_time

    array(['2008-06-04T00:15:34.000000000', '2008-06-04T00:15:34.000000000',
           '2008-06-04T00:15:34.000000000', ..., '2008-06-04T00:15:33.000000000',
           '2008-06-04T00:15:33.000000000', '2008-06-04T00:15:34.000000000'],
          shape=(483,), dtype='datetime64[ns]')

  • range
    (range)
    float32
    150.0 300.0 ... 1.492e+05 1.494e+05

    standard_name :

    range_to_center_of_measurement_volume

    long_name :

    Range from instrument to center of gate

    units :

    meters

    spacing_is_constant :

    true

    meters_to_center_of_first_gate :

    150.00000596046448

    meters_between_gates :

    150.00000596046448

    array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,
           149250.     , 149400.     ], shape=(996,), dtype=float32)

  • latitude
    ()
    float64
    22.53

    standard_name :

    latitude

    units :

    degrees_north

    array(22.52669907)

  • longitude
    ()
    float64
    120.4

    standard_name :

    longitude

    units :

    degrees_east

    array(120.4335022)

  • altitude
    ()
    float64
    45.0

    standard_name :

    altitude

    units :

    meters

    positive :

    up

    array(45.00000179)

• Data variables: (7)
  • sweep_number
    ()
    int32
    0

    standard_name :

    sweep_index_number_0_based

    array(0, dtype=int32)

  • sweep_mode
    ()
    <U20
    'azimuth_surveillance'

    standard_name :

    scan_mode_for_sweep

    options :

    sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

    array('azimuth_surveillance', dtype='<U20')

  • prt_mode
    ()
    |S32
    b'not_set'

    standard_name :

    transmit_pulse_mode

    options :

    fixed, staggered, dual

    meta_group :

    radar_parameters

    array(b'not_set', dtype='|S32')

  • follow_mode
    ()
    |S32
    b'not_set'

    standard_name :

    follow_mode_for_scan_strategy

    options :

    none, sun, vehicle, aircraft, target, manual

    meta_group :

    instrument_parameters

    array(b'not_set', dtype='|S32')

  • sweep_fixed_angle
    ()
    float32
    0.4999

    standard_name :

    beam_target_fixed_angle

    units :

    degrees

    array(0.4999, dtype=float32)

  • DBZ
    (azimuth, range)
    float32
    20.7 39.97 29.65 ... -3.16 -1.32

    long_name :

    Computed Horizontal Co-polar Reflectivit

    standard_name :

    equivalent_reflectivity_factor

    units :

    dBZ

    threshold_field_name :

    threshold_value :

    -9999.0

    sampling_ratio :

    1.0

    grid_mapping :

    grid_mapping

    array([[ 20.699957  ,  39.96934   ,  29.650644  , ...,  -2.7995949 ,
             -3.5493348 ,  -1.6501119 ],
           [ 13.829709  ,  35.710747  ,   8.869345  , ..., -18.780428  ,
             -3.0803032 ,  -4.5193777 ],
           [ -9.1297455 ,  14.810412  ,   4.539685  , ...,   0.17982224,
             -0.5503748 ,  -3.519132  ],
           ...,
           [  5.8899274 ,  26.049406  ,  32.379555  , ...,  -2.550866  ,
             -1.060269  ,  -1.9006175 ],
           [  0.959765  ,  23.579884  ,   9.29929   , ...,  -8.680257  ,
             -5.039932  ,  -2.4105117 ],
           [ 20.079912  ,  39.15031   ,  13.190121  , ...,  -4.9191203 ,
             -3.1602516 ,  -1.3196578 ]], shape=(483, 996), dtype=float32)

  • VR
    (azimuth, range)
    float32
    -23.38 10.22 1.17 ... 20.63 -25.39

    long_name :

    Computed Velocity

    standard_name :

    radial_velocity_of_scatterers_away_from_instrument

    units :

    m/s

    threshold_field_name :

    threshold_value :

    -9999.0

    sampling_ratio :

    1.0

    grid_mapping :

    grid_mapping

    array([[-23.380377  ,  10.219611  ,   1.1695913 , ...,  22.359642  ,
             -2.2598467 ,  23.109653  ],
           [  8.669698  ,   8.860268  ,   1.109885  , ...,  16.950077  ,
            -17.420368  , -16.98034   ],
           [  4.4796166 ,   4.9597216 ,  -0.7999023 , ..., -22.860195  ,
             25.97965   , -22.330198  ],
           ...,
           [-21.76994   , -20.16032   ,   1.0599933 , ...,  16.92963   ,
            -25.179747  , -10.590118  ],
           [  8.189593  ,   8.69996   ,  -0.16030763, ..., -26.499832  ,
            -18.880312  ,  18.109854  ],
           [ 10.419995  ,  10.270321  ,   1.5000213 , ..., -11.900388  ,
             20.629791  , -25.389946  ]], shape=(483, 996), dtype=float32)

optional=False and site_as_coords=False

sweeps = xd.io.backends.cfradial1._get_sweep_groups(
    ds, optional=False, site_as_coords=False
)
with xr.set_options(display_expand_data_vars=True):
    display(sweeps["sweep_0"])

<xarray.Dataset> Size: 4MB
Dimensions:            (azimuth: 483, range: 996)
Coordinates:
  * azimuth            (azimuth) float32 2kB 0.0 0.75 1.5 ... 357.8 358.5 359.2
    elevation          (azimuth) float32 2kB 0.5164 0.5219 ... 0.5219 0.5219
    time               (azimuth) datetime64[ns] 4kB 2008-06-04T00:15:34 ... 2...
  * range              (range) float32 4kB 150.0 300.0 ... 1.492e+05 1.494e+05
Data variables:
    sweep_number       int32 4B 0
    sweep_mode         <U20 80B 'azimuth_surveillance'
    prt_mode           |S32 32B b'not_set'
    follow_mode        |S32 32B b'not_set'
    sweep_fixed_angle  float32 4B 0.4999
    DBZ                (azimuth, range) float32 2MB 20.7 39.97 ... -3.16 -1.32
    VR                 (azimuth, range) float32 2MB -23.38 10.22 ... -25.39
    latitude           float64 8B 22.53
    longitude          float64 8B 120.4
    altitude           float64 8B 45.0

xarray.Dataset

• Dimensions:
  • azimuth: 483
  • range: 996
• Coordinates: (4)
  • azimuth
    (azimuth)
    float32
    0.0 0.75 1.5 ... 357.8 358.5 359.2

    standard_name :

    beam_azimuth_angle

    units :

    degrees

    array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],
          shape=(483,), dtype=float32)

  • elevation
    (azimuth)
    float32
    0.5164 0.5219 ... 0.5219 0.5219

    standard_name :

    beam_elevation_angle

    units :

    degrees

    positive :

    up

    array([0.5164, 0.5219, 0.5164, 0.5219, 0.5164, 0.5219, 0.5219, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5219, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5109, 0.5109, 0.5109, 0.5109,
           0.5109, 0.5109, 0.5109, 0.5109, 0.5109, 0.5109, 0.5109, 0.5109,
    ...
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219], dtype=float32)

  • time
    (azimuth)
    datetime64[ns]
    2008-06-04T00:15:34 ... 2008-06-...

    standard_name :

    time

    long_name :

    time in seconds since volume start

    comment :

    times are relative to the volume start_time

    array(['2008-06-04T00:15:34.000000000', '2008-06-04T00:15:34.000000000',
           '2008-06-04T00:15:34.000000000', ..., '2008-06-04T00:15:33.000000000',
           '2008-06-04T00:15:33.000000000', '2008-06-04T00:15:34.000000000'],
          shape=(483,), dtype='datetime64[ns]')

  • range
    (range)
    float32
    150.0 300.0 ... 1.492e+05 1.494e+05

    standard_name :

    range_to_center_of_measurement_volume

    long_name :

    Range from instrument to center of gate

    units :

    meters

    spacing_is_constant :

    true

    meters_to_center_of_first_gate :

    150.00000596046448

    meters_between_gates :

    150.00000596046448

    array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,
           149250.     , 149400.     ], shape=(996,), dtype=float32)

• Data variables: (10)
  • sweep_number
    ()
    int32
    0

    standard_name :

    sweep_index_number_0_based

    array(0, dtype=int32)

  • sweep_mode
    ()
    <U20
    'azimuth_surveillance'

    standard_name :

    scan_mode_for_sweep

    options :

    sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

    array('azimuth_surveillance', dtype='<U20')

  • prt_mode
    ()
    |S32
    b'not_set'

    standard_name :

    transmit_pulse_mode

    options :

    fixed, staggered, dual

    meta_group :

    radar_parameters

    array(b'not_set', dtype='|S32')

  • follow_mode
    ()
    |S32
    b'not_set'

    standard_name :

    follow_mode_for_scan_strategy

    options :

    none, sun, vehicle, aircraft, target, manual

    meta_group :

    instrument_parameters

    array(b'not_set', dtype='|S32')

  • sweep_fixed_angle
    ()
    float32
    0.4999

    standard_name :

    beam_target_fixed_angle

    units :

    degrees

    array(0.4999, dtype=float32)

  • DBZ
    (azimuth, range)
    float32
    20.7 39.97 29.65 ... -3.16 -1.32

    long_name :

    Computed Horizontal Co-polar Reflectivit

    standard_name :

    equivalent_reflectivity_factor

    units :

    dBZ

    threshold_field_name :

    threshold_value :

    -9999.0

    sampling_ratio :

    1.0

    grid_mapping :

    grid_mapping

    array([[ 20.699957  ,  39.96934   ,  29.650644  , ...,  -2.7995949 ,
             -3.5493348 ,  -1.6501119 ],
           [ 13.829709  ,  35.710747  ,   8.869345  , ..., -18.780428  ,
             -3.0803032 ,  -4.5193777 ],
           [ -9.1297455 ,  14.810412  ,   4.539685  , ...,   0.17982224,
             -0.5503748 ,  -3.519132  ],
           ...,
           [  5.8899274 ,  26.049406  ,  32.379555  , ...,  -2.550866  ,
             -1.060269  ,  -1.9006175 ],
           [  0.959765  ,  23.579884  ,   9.29929   , ...,  -8.680257  ,
             -5.039932  ,  -2.4105117 ],
           [ 20.079912  ,  39.15031   ,  13.190121  , ...,  -4.9191203 ,
             -3.1602516 ,  -1.3196578 ]], shape=(483, 996), dtype=float32)

  • VR
    (azimuth, range)
    float32
    -23.38 10.22 1.17 ... 20.63 -25.39

    long_name :

    Computed Velocity

    standard_name :

    radial_velocity_of_scatterers_away_from_instrument

    units :

    m/s

    threshold_field_name :

    threshold_value :

    -9999.0

    sampling_ratio :

    1.0

    grid_mapping :

    grid_mapping

    array([[-23.380377  ,  10.219611  ,   1.1695913 , ...,  22.359642  ,
             -2.2598467 ,  23.109653  ],
           [  8.669698  ,   8.860268  ,   1.109885  , ...,  16.950077  ,
            -17.420368  , -16.98034   ],
           [  4.4796166 ,   4.9597216 ,  -0.7999023 , ..., -22.860195  ,
             25.97965   , -22.330198  ],
           ...,
           [-21.76994   , -20.16032   ,   1.0599933 , ...,  16.92963   ,
            -25.179747  , -10.590118  ],
           [  8.189593  ,   8.69996   ,  -0.16030763, ..., -26.499832  ,
            -18.880312  ,  18.109854  ],
           [ 10.419995  ,  10.270321  ,   1.5000213 , ..., -11.900388  ,
             20.629791  , -25.389946  ]], shape=(483, 996), dtype=float32)

  • latitude
    ()
    float64
    22.53

    standard_name :

    latitude

    units :

    degrees_north

    array(22.52669907)

  • longitude
    ()
    float64
    120.4

    standard_name :

    longitude

    units :

    degrees_east

    array(120.4335022)

  • altitude
    ()
    float64
    45.0

    standard_name :

    altitude

    units :

    meters

    positive :

    up

    array(45.00000179)

optional=False, site_as_coords=True and first_dim="auto"

sweeps = xd.io.backends.cfradial1._get_sweep_groups(
    ds, optional=False, site_as_coords=False, first_dim="time"
)
with xr.set_options(display_expand_data_vars=True):
    display(sweeps["sweep_0"])

<xarray.Dataset> Size: 4MB
Dimensions:            (time: 483, range: 996)
Coordinates:
  * time               (time) datetime64[ns] 4kB 2008-06-04T00:15:03 ... 2008...
    azimuth            (time) float32 2kB 121.5 122.2 123.0 ... 122.2 123.0
    elevation          (time) float32 2kB 0.379 0.2362 0.1648 ... 0.5109 0.5109
  * range              (range) float32 4kB 150.0 300.0 ... 1.492e+05 1.494e+05
Data variables:
    sweep_number       int32 4B 0
    sweep_mode         <U20 80B 'azimuth_surveillance'
    prt_mode           |S32 32B b'not_set'
    follow_mode        |S32 32B b'not_set'
    sweep_fixed_angle  float32 4B 0.4999
    DBZ                (time, range) float32 2MB -3.07 16.3 ... -0.2697 -0.01028
    VR                 (time, range) float32 2MB -25.24 3.48 ... 3.19 -23.05
    latitude           float64 8B 22.53
    longitude          float64 8B 120.4
    altitude           float64 8B 45.0

xarray.Dataset

• Dimensions:
  • time: 483
  • range: 996
• Coordinates: (4)
  • time
    (time)
    datetime64[ns]
    2008-06-04T00:15:03 ... 2008-06-...

    standard_name :

    time

    long_name :

    time in seconds since volume start

    comment :

    times are relative to the volume start_time

    array(['2008-06-04T00:15:03.000000000', '2008-06-04T00:15:03.000000000',
           '2008-06-04T00:15:03.000000000', ..., '2008-06-04T00:15:50.000000000',
           '2008-06-04T00:15:50.000000000', '2008-06-04T00:15:50.000000000'],
          shape=(483,), dtype='datetime64[ns]')

  • azimuth
    (time)
    float32
    121.5 122.2 123.0 ... 122.2 123.0

    standard_name :

    beam_azimuth_angle

    units :

    degrees

    array([121.5 , 122.25, 123.  , 123.75, 124.5 , 125.25, 126.  , 126.75,
           127.5 , 128.25, 129.  , 129.75, 130.5 , 131.25, 132.  , 132.75,
           133.5 , 134.25, 135.  , 135.75, 136.5 , 137.25, 138.  , 138.75,
           139.5 , 140.25, 141.  , 141.75, 142.5 , 143.25, 144.  , 144.75,
           145.5 , 146.25, 147.  , 147.75, 148.5 , 149.25, 150.  , 150.75,
           151.5 , 152.25, 153.  , 153.75, 154.5 , 155.25, 156.  , 156.75,
           157.5 , 158.25, 159.  , 159.75, 160.5 , 161.25, 162.  , 162.75,
           163.5 , 164.25, 165.  , 165.75, 166.5 , 167.25, 168.  , 168.75,
           169.5 , 170.25, 171.  , 171.75, 172.5 , 173.25, 174.  , 174.75,
           175.5 , 176.25, 177.  , 177.75, 178.5 , 179.25, 180.  , 180.75,
           181.5 , 182.25, 183.  , 183.75, 184.5 , 185.25, 186.  , 186.75,
           187.5 , 188.25, 189.  , 189.75, 190.5 , 191.25, 192.  , 192.75,
           193.5 , 194.25, 195.  , 195.75, 196.5 , 197.25, 198.  , 198.75,
           199.5 , 200.25, 201.  , 201.75, 202.5 , 203.25, 204.  , 204.75,
           205.5 , 206.25, 207.  , 207.75, 208.5 , 209.25, 210.  , 210.75,
           211.5 , 212.25, 213.  , 213.75, 214.5 , 215.25, 216.  , 216.75,
           217.5 , 218.25, 219.  , 219.75, 220.5 , 221.25, 222.  , 222.75,
           223.5 , 224.25, 225.  , 225.75, 226.5 , 227.25, 228.  , 228.75,
           229.5 , 230.25, 231.  , 231.75, 232.5 , 233.25, 234.  , 234.75,
           235.5 , 236.25, 237.  , 237.75, 238.5 , 239.25, 240.  , 240.75,
    ...
             7.5 ,   8.25,   9.  ,   9.75,  10.5 ,  11.25,  12.  ,  12.75,
            13.5 ,  14.25,  15.  ,  15.75,  16.5 ,  17.25,  18.  ,  18.75,
            19.5 ,  20.25,  21.  ,  21.75,  22.5 ,  23.25,  24.  ,  24.75,
            25.5 ,  26.25,  27.  ,  27.75,  28.5 ,  29.25,  30.  ,  30.75,
            31.5 ,  32.25,  33.  ,  33.75,  34.5 ,  35.25,  36.  ,  36.75,
            37.5 ,  38.25,  39.  ,  39.75,  40.5 ,  41.25,  42.  ,  42.75,
            43.5 ,  44.25,  45.  ,  45.75,  46.5 ,  47.25,  48.  ,  48.75,
            49.5 ,  50.25,  51.  ,  51.75,  52.5 ,  53.25,  54.  ,  54.75,
            55.5 ,  56.25,  57.  ,  57.75,  58.5 ,  59.25,  60.  ,  60.75,
            61.5 ,  62.25,  63.  ,  63.75,  64.5 ,  65.25,  66.  ,  66.75,
            67.5 ,  68.25,  69.  ,  69.75,  70.5 ,  71.25,  72.  ,  72.75,
            73.5 ,  74.25,  75.  ,  75.75,  76.5 ,  77.25,  78.  ,  78.75,
            79.5 ,  80.25,  81.  ,  81.75,  82.5 ,  83.25,  84.  ,  84.75,
            85.5 ,  86.25,  87.  ,  87.75,  88.5 ,  89.25,  90.  ,  90.75,
            91.5 ,  92.25,  93.  ,  93.75,  94.5 ,  95.25,  96.  ,  96.75,
            97.5 ,  98.25,  99.  ,  99.75, 100.5 , 101.25, 102.  , 102.75,
           103.5 , 104.25, 105.  , 105.75, 106.5 , 107.25, 108.  , 108.75,
           109.5 , 110.25, 111.  , 111.75, 112.5 , 113.25, 114.  , 114.75,
           115.5 , 116.25, 117.  , 117.75, 118.5 , 119.25, 120.  , 120.75,
           121.5 , 122.25, 123.  ], dtype=float32)

  • elevation
    (time)
    float32
    0.379 0.2362 ... 0.5109 0.5109

    standard_name :

    beam_elevation_angle

    units :

    degrees

    positive :

    up

    array([0.379 , 0.2362, 0.1648, 0.1648, 0.2142, 0.2417, 0.2911, 0.3571,
           0.4175, 0.4779, 0.5054, 0.5274, 0.5164, 0.5109, 0.5274, 0.5219,
           0.5164, 0.5219, 0.5164, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
           0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219, 0.5219,
    ...
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5219, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164, 0.5164,
           0.5164, 0.5164, 0.5109, 0.5109, 0.5109, 0.5109, 0.5109, 0.5109,
           0.5109, 0.5109, 0.5109, 0.5109, 0.5109, 0.5109, 0.5109, 0.5109,
           0.5109, 0.5109, 0.5109], dtype=float32)

  • range
    (range)
    float32
    150.0 300.0 ... 1.492e+05 1.494e+05

    standard_name :

    range_to_center_of_measurement_volume

    long_name :

    Range from instrument to center of gate

    units :

    meters

    spacing_is_constant :

    true

    meters_to_center_of_first_gate :

    150.00000596046448

    meters_between_gates :

    150.00000596046448

    array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,
           149250.     , 149400.     ], shape=(996,), dtype=float32)

• Data variables: (10)
  • sweep_number
    ()
    int32
    0

    standard_name :

    sweep_index_number_0_based

    array(0, dtype=int32)

  • sweep_mode
    ()
    <U20
    'azimuth_surveillance'

    standard_name :

    scan_mode_for_sweep

    options :

    sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

    array('azimuth_surveillance', dtype='<U20')

  • prt_mode
    ()
    |S32
    b'not_set'

    standard_name :

    transmit_pulse_mode

    options :

    fixed, staggered, dual

    meta_group :

    radar_parameters

    array(b'not_set', dtype='|S32')

  • follow_mode
    ()
    |S32
    b'not_set'

    standard_name :

    follow_mode_for_scan_strategy

    options :

    none, sun, vehicle, aircraft, target, manual

    meta_group :

    instrument_parameters

    array(b'not_set', dtype='|S32')

  • sweep_fixed_angle
    ()
    float32
    0.4999

    standard_name :

    beam_target_fixed_angle

    units :

    degrees

    array(0.4999, dtype=float32)

  • DBZ
    (time, range)
    float32
    -3.07 16.3 ... -0.2697 -0.01028

    long_name :

    Computed Horizontal Co-polar Reflectivit

    standard_name :

    equivalent_reflectivity_factor

    units :

    dBZ

    threshold_field_name :

    threshold_value :

    -9999.0

    sampling_ratio :

    1.0

    grid_mapping :

    grid_mapping

    array([[-3.0696433e+00,  1.6299232e+01,  3.7709461e+01, ...,
            -6.0401773e+00,  2.1002503e-01, -3.4800460e+00],
           [-1.0929477e+01,  1.3470829e+01,  6.5597186e+00, ...,
            -7.1027195e-01,  1.2795594e+00, -1.5595036e+00],
           [-6.0792632e+00,  1.0450549e+01,  3.2391877e+00, ...,
            -5.0203886e+00, -8.7016910e-01, -3.5599947e+00],
           ...,
           [-1.7496034e+00,  1.6560398e+01,  7.5795074e+00, ...,
            -2.4691408e+00, -1.5701632e+00, -4.8196287e+00],
           [ 1.4129961e+01,  1.5430458e+01,  7.0998158e+00, ...,
             6.2042773e-01, -2.2594976e+00,  4.6941376e-01],
           [ 7.2099671e+00,  1.5799997e+01,  1.8770531e+01, ...,
            -1.8971786e-01, -2.6966643e-01, -1.0277718e-02]],
          shape=(483, 996), dtype=float32)

  • VR
    (time, range)
    float32
    -25.24 3.48 25.8 ... 3.19 -23.05

    long_name :

    Computed Velocity

    standard_name :

    radial_velocity_of_scatterers_away_from_instrument

    units :

    m/s

    threshold_field_name :

    threshold_value :

    -9999.0

    sampling_ratio :

    1.0

    grid_mapping :

    grid_mapping

    array([[-25.240273  ,   3.4801476 ,  25.799713  , ..., -18.63985   ,
             10.249873  ,  26.31008   ],
           [ -6.409851  ,  23.62002   , -26.610249  , ..., -16.64991   ,
             19.330154  , -20.600348  ],
           [ 26.710032  ,  24.829687  ,  -0.48010498, ...,   5.6598406 ,
             21.28002   ,  14.659968  ],
           ...,
           [  5.200183  ,   1.7797418 ,  -3.1096408 , ...,   0.61015046,
             22.389904  ,  -7.7601976 ],
           [  2.0897243 ,   1.6398816 , -18.419836  , ...,  -3.7598681 ,
            -20.83999   ,  17.250246  ],
           [  2.1698782 ,  -0.08015382,  -1.2399304 , ...,   6.9104037 ,
              3.1897945 , -23.049946  ]], shape=(483, 996), dtype=float32)

  • latitude
    ()
    float64
    22.53

    standard_name :

    latitude

    units :

    degrees_north

    array(22.52669907)

  • longitude
    ()
    float64
    120.4

    standard_name :

    longitude

    units :

    degrees_east

    array(120.4335022)

  • altitude
    ()
    float64
    45.0

    standard_name :

    altitude

    units :

    meters

    positive :

    up

    array(45.00000179)

Read as CfRadial2 data representation

xradar provides two easy ways to retrieve the CfRadial1 data as CfRadial2 groups.

DataTree

This is the most complete representation as a DataTree. All groups and subgroups are represented in a tree-like structure. Can be parameterized using kwargs. Easy write to netCDF4.

dtree = xd.io.open_cfradial1_datatree(filename, optional_groups=True)
with xr.set_options(display_expand_data_vars=True, display_expand_attrs=True):
    display(dtree)

<xarray.DataTree>
Group: /
│   Dimensions:              (sweep: 9)
│   Coordinates:
│       latitude             float64 8B ...
│       longitude            float64 8B ...
│       altitude             float64 8B ...
│   Dimensions without coordinates: sweep
│   Data variables:
│       volume_number        int32 4B ...
│       platform_type        |S32 32B ...
│       primary_axis         |S32 32B ...
│       status_str           |S1 1B ...
│       instrument_type      |S32 32B ...
│       time_coverage_start  |S32 32B ...
│       time_coverage_end    |S32 32B ...
│       sweep_group_name     (sweep) <U7 252B 'sweep_0' 'sweep_1' ... 'sweep_8'
│       sweep_fixed_angle    (sweep) float32 36B ...
│   Attributes: (12/13)
│       Conventions:         CF/Radial instrument_parameters radar_parameters rad...
│       version:             1.2
│       title:               TIMREX
│       institution:         
│       references:          
│       source:              
│       ...                  ...
│       comment:             
│       instrument_name:     SPOLRVP8
│       site_name:           
│       scan_name:           
│       scan_id:             0
│       platform_is_mobile:  false
├── Group: /radar_parameters
│       Dimensions:                   ()
│       Data variables:
│           radar_beam_width_h        float32 4B ...
│           radar_receiver_bandwidth  float32 4B ...
│           radar_antenna_gain_v      float32 4B ...
│           radar_antenna_gain_h      float32 4B ...
│           radar_beam_width_v        float32 4B ...
├── Group: /georeferencing_correction
│       Dimensions:                            ()
│       Data variables: (12/16)
│           longitude_correction               float32 4B ...
│           rotation_correction                float32 4B ...
│           pitch_correction                   float32 4B ...
│           elevation_correction               float32 4B ...
│           northward_ground_speed_correction  float32 4B ...
│           latitude_correction                float32 4B ...
│           ...                                 ...
│           eastward_ground_speed_correction   float32 4B ...
│           roll_correction                    float32 4B ...
│           tilt_correction                    float32 4B ...
│           vertical_velocity_correction       float32 4B ...
│           drift_correction                   float32 4B ...
│           azimuth_correction                 float32 4B ...
├── Group: /radar_calibration
│       Dimensions:                   ()
│       Data variables: (12/45)
│           time                      |S32 32B ...
│           pulse_width               float32 4B ...
│           xmit_power_h              float32 4B ...
│           xmit_power_v              float32 4B ...
│           two_way_waveguide_loss_h  float32 4B ...
│           two_way_waveguide_loss_v  float32 4B ...
│           ...                        ...
│           test_power_h              float32 4B ...
│           test_power_v              float32 4B ...
│           receiver_slope_hc         float32 4B ...
│           receiver_slope_vc         float32 4B ...
│           receiver_slope_hx         float32 4B ...
│           receiver_slope_vx         float32 4B ...
├── Group: /sweep_0
│       Dimensions:                    (azimuth: 483, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB 2008-06-04T00:15:...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B 'azimuth_surveillance'
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 483B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
├── Group: /sweep_1
│       Dimensions:                    (azimuth: 483, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB 2008-06-04T00:16:...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B 'azimuth_surveillance'
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 483B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
├── Group: /sweep_2
│       Dimensions:                    (azimuth: 482, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB 2008-06-04T00:17:...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B 'azimuth_surveillance'
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 482B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
├── Group: /sweep_3
│       Dimensions:                    (azimuth: 483, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB 2008-06-04T00:17:...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B 'azimuth_surveillance'
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 483B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
├── Group: /sweep_4
│       Dimensions:                    (azimuth: 481, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB 2008-06-04T00:18:...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B 'azimuth_surveillance'
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 481B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
├── Group: /sweep_5
│       Dimensions:                    (azimuth: 482, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB 2008-06-04T00:19:...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B 'azimuth_surveillance'
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 482B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
├── Group: /sweep_6
│       Dimensions:                    (azimuth: 482, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB 2008-06-04T00:20:...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B 'azimuth_surveillance'
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 482B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
├── Group: /sweep_7
│       Dimensions:                    (azimuth: 484, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB 2008-06-04T00:21:...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B 'azimuth_surveillance'
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 484B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
└── Group: /sweep_8
        Dimensions:                    (azimuth: 483, range: 996)
        Coordinates:
          * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
            elevation                  (azimuth) float32 2kB ...
            time                       (azimuth) datetime64[ns] 4kB 2008-06-04T00:21:...
          * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
        Data variables: (12/18)
            sweep_number               int32 4B ...
            sweep_mode                 <U20 80B 'azimuth_surveillance'
            prt_mode                   |S32 32B ...
            follow_mode                |S32 32B ...
            sweep_fixed_angle          float32 4B ...
            pulse_width                (azimuth) float32 2kB ...
            ...                         ...
            r_calib_index              (azimuth) int8 483B ...
            measured_transmit_power_h  (azimuth) float32 2kB ...
            measured_transmit_power_v  (azimuth) float32 2kB ...
            scan_rate                  (azimuth) float32 2kB ...
            DBZ                        (azimuth, range) float32 2MB ...
            VR                         (azimuth, range) float32 2MB ...

xarray.DataTree

• /radar_parameters(5)

  • Dimensions:
    • sweep: 9
  • Data variables: (5)
    • radar_beam_width_h
      ()
      float32
      ...

      standard_name :

      half_power_radar_beam_width_h_channel

      units :

      degrees

      meta_group :

      radar_parameters

      [1 values with dtype=float32]

    • radar_receiver_bandwidth
      ()
      float32
      ...

      standard_name :

      radar_receiver_bandwidth

      units :

      s-1

      meta_group :

      radar_parameters

      [1 values with dtype=float32]

    • radar_antenna_gain_v
      ()
      float32
      ...

      standard_name :

      nominal_radar_antenna_gain_v_channel

      units :

      dB

      meta_group :

      radar_parameters

      [1 values with dtype=float32]

    • radar_antenna_gain_h
      ()
      float32
      ...

      standard_name :

      nominal_radar_antenna_gain_h_channel

      units :

      dB

      meta_group :

      radar_parameters

      [1 values with dtype=float32]

    • radar_beam_width_v
      ()
      float32
      ...

      standard_name :

      half_power_radar_beam_width_v_channel

      units :

      degrees

      meta_group :

      radar_parameters

      [1 values with dtype=float32]

  /georeferencing_correction(16)

  • Dimensions:
    • sweep: 9
  • Data variables: (16)
    • longitude_correction
      ()
      float32
      ...

      standard_name :

      longitude_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • rotation_correction
      ()
      float32
      ...

      standard_name :

      beam_rotation_angle_relative_to_platform_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • pitch_correction
      ()
      float32
      ...

      standard_name :

      platform_pitch_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • elevation_correction
      ()
      float32
      ...

      standard_name :

      beam_elevation_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • northward_ground_speed_correction
      ()
      float32
      ...

      standard_name :

      platform_northward_velocity_correction

      units :

      meters per second

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • latitude_correction
      ()
      float32
      ...

      standard_name :

      latitude_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • pressure_altitude_correction
      ()
      float32
      ...

      standard_name :

      pressure_altitude_correction

      units :

      meters

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • radar_altitude_correction
      ()
      float32
      ...

      standard_name :

      altitude_correction

      units :

      meters

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • range_correction
      ()
      float32
      ...

      standard_name :

      range_to_center_of_measurement_volume_correction

      units :

      meters

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • heading_correction
      ()
      float32
      ...

      standard_name :

      platform_heading_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • eastward_ground_speed_correction
      ()
      float32
      ...

      standard_name :

      platform_eastward_velocity_correction

      units :

      meters per second

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • roll_correction
      ()
      float32
      ...

      standard_name :

      platform_roll_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • tilt_correction
      ()
      float32
      ...

      standard_name :

      beam_tilt_angle_relative_to_platform_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • vertical_velocity_correction
      ()
      float32
      ...

      standard_name :

      platform_vertical_velocity_correction

      units :

      meters per second

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • drift_correction
      ()
      float32
      ...

      standard_name :

      platform_drift_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • azimuth_correction
      ()
      float32
      ...

      standard_name :

      azimuth_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

  /radar_calibration(45)

  • Dimensions:
    • sweep: 9
  • Data variables: (45)
    • time
      ()
      |S32
      ...

      standard_name :

      radar_calibration_time_utc

      meta_group :

      radar_calibration

      [1 values with dtype=|S32]

    • pulse_width
      ()
      float32
      ...

      standard_name :

      radar_calibration_pulse_width

      units :

      seconds

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • xmit_power_h
      ()
      float32
      ...

      standard_name :

      calibrated_radar_xmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • xmit_power_v
      ()
      float32
      ...

      standard_name :

      calibrated_radar_xmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • two_way_waveguide_loss_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_two_way_waveguide_loss_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • two_way_waveguide_loss_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_two_way_waveguide_loss_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • two_way_radome_loss_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_two_way_radome_loss_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • two_way_radome_loss_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_two_way_radome_loss_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_mismatch_loss
      ()
      float32
      ...

      standard_name :

      radar_calibration_receiver_mismatch_loss

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • radar_constant_h
      ()
      float32
      ...

      standard_name :

      calibrated_radar_constant_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • radar_constant_v
      ()
      float32
      ...

      standard_name :

      calibrated_radar_constant_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • antenna_gain_h
      ()
      float32
      ...

      standard_name :

      calibrated_radar_antenna_gain_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • antenna_gain_v
      ()
      float32
      ...

      standard_name :

      calibrated_radar_antenna_gain_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_hc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_noise_h_co_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_vc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_noise_v_co_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_hx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_noise_h_cross_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_vx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_noise_v_cross_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_gain_hc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_gain_h_co_polar_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_gain_vc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_gain_v_co_polar_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_gain_hx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_gain_h_cross_polar_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_gain_vx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_gain_v_cross_polar_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • base_1km_hc
      ()
      float32
      ...

      standard_name :

      radar_reflectivity_at_1km_at_zero_snr_h_co_polar_channel

      units :

      dBZ

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • base_1km_vc
      ()
      float32
      ...

      standard_name :

      radar_reflectivity_at_1km_at_zero_snr_v_co_polar_channel

      units :

      dBZ

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • base_1km_hx
      ()
      float32
      ...

      standard_name :

      radar_reflectivity_at_1km_at_zero_snr_h_cross_polar_channel

      units :

      dBZ

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • base_1km_vx
      ()
      float32
      ...

      standard_name :

      radar_reflectivity_at_1km_at_zero_snr_v_cross_polar_channel

      units :

      dBZ

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • sun_power_hc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_sun_power_h_co_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • sun_power_vc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_sun_power_v_co_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • sun_power_hx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_sun_power_h_cross_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • sun_power_vx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_sun_power_v_cross_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_source_power_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_noise_source_power_h_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_source_power_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_noise_source_power_v_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • power_measure_loss_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_power_measurement_loss_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • power_measure_loss_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_power_measurement_loss_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • coupler_forward_loss_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_coupler_forward_loss_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • coupler_forward_loss_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_coupler_forward_loss_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • zdr_correction
      ()
      float32
      ...

      standard_name :

      calibrated_radar_zdr_correction

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • ldr_correction_h
      ()
      float32
      ...

      standard_name :

      calibrated_radar_ldr_correction_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • ldr_correction_v
      ()
      float32
      ...

      standard_name :

      calibrated_radar_ldr_correction_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • system_phidp
      ()
      float32
      ...

      standard_name :

      calibrated_radar_system_phidp

      units :

      degrees

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • test_power_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_test_power_h_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • test_power_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_test_power_v_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_slope_hc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_slope_h_co_polar_channel

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_slope_vc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_slope_v_co_polar_channel

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_slope_hx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_slope_h_cross_polar_channel

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_slope_vx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_slope_v_cross_polar_channel

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

  /sweep_0(22)

  • Dimensions:
    • sweep: 9
    • azimuth: 483
    • range: 996
  • Coordinates: (4)
    • azimuth
      (azimuth)
      float32
      0.0 0.75 1.5 ... 357.8 358.5 359.2

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],shape=(483,), dtype=float32)

    • elevation
      (azimuth)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [483 values with dtype=float32]

    • time
      (azimuth)
      datetime64[ns]
      2008-06-04T00:15:34 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:15:34.000000000', '2008-06-04T00:15:34.000000000','2008-06-04T00:15:34.000000000', ..., '2008-06-04T00:15:33.000000000','2008-06-04T00:15:33.000000000', '2008-06-04T00:15:34.000000000'],shape=(483,), dtype='datetime64[ns]')

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (18)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      'azimuth_surveillance'

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      array('azimuth_surveillance', dtype='<U20')

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • pulse_width
      (azimuth)
      float32
      ...

      standard_name :

      transmitter_pulse_width

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • prt
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • prt_ratio
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency_ratio

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • nyquist_velocity
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_doppler_velocity

      units :

      meters per second

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • unambiguous_range
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_range

      units :

      meters

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • antenna_transition
      (azimuth)
      int8
      ...

      standard_name :

      antenna_is_in_transition_between_sweeps

      comment :

      1 if antenna is in transition, 0 otherwise

      [483 values with dtype=int8]

    • n_samples
      (azimuth)
      int32
      ...

      standard_name :

      number_of_samples_used_to_compute_moments

      meta_group :

      instrument_parameters

      [483 values with dtype=int32]

    • r_calib_index
      (azimuth)
      int8
      ...

      standard_name :

      calibration_data_array_index_per_ray

      meta_group :

      radar_calibration

      comment :

      This is the index for the calibration which applies to this ray

      [483 values with dtype=int8]

    • measured_transmit_power_h
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [483 values with dtype=float32]

    • measured_transmit_power_v
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [483 values with dtype=float32]

    • scan_rate
      (azimuth)
      float32
      ...

      standard_name :

      antenna_angle_scan_rate

      units :

      degrees per second

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • DBZ
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

    • VR
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

  /sweep_1(22)

  • Dimensions:
    • sweep: 9
    • azimuth: 483
    • range: 996
  • Coordinates: (4)
    • azimuth
      (azimuth)
      float32
      0.0 0.75 1.5 ... 357.8 358.5 359.2

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],shape=(483,), dtype=float32)

    • elevation
      (azimuth)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [483 values with dtype=float32]

    • time
      (azimuth)
      datetime64[ns]
      2008-06-04T00:16:21 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:16:21.000000000', '2008-06-04T00:16:21.000000000','2008-06-04T00:16:21.000000000', ..., '2008-06-04T00:16:20.000000000','2008-06-04T00:16:20.000000000', '2008-06-04T00:16:20.000000000'],shape=(483,), dtype='datetime64[ns]')

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (18)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      'azimuth_surveillance'

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      array('azimuth_surveillance', dtype='<U20')

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • pulse_width
      (azimuth)
      float32
      ...

      standard_name :

      transmitter_pulse_width

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • prt
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • prt_ratio
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency_ratio

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • nyquist_velocity
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_doppler_velocity

      units :

      meters per second

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • unambiguous_range
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_range

      units :

      meters

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • antenna_transition
      (azimuth)
      int8
      ...

      standard_name :

      antenna_is_in_transition_between_sweeps

      comment :

      1 if antenna is in transition, 0 otherwise

      [483 values with dtype=int8]

    • n_samples
      (azimuth)
      int32
      ...

      standard_name :

      number_of_samples_used_to_compute_moments

      meta_group :

      instrument_parameters

      [483 values with dtype=int32]

    • r_calib_index
      (azimuth)
      int8
      ...

      standard_name :

      calibration_data_array_index_per_ray

      meta_group :

      radar_calibration

      comment :

      This is the index for the calibration which applies to this ray

      [483 values with dtype=int8]

    • measured_transmit_power_h
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [483 values with dtype=float32]

    • measured_transmit_power_v
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [483 values with dtype=float32]

    • scan_rate
      (azimuth)
      float32
      ...

      standard_name :

      antenna_angle_scan_rate

      units :

      degrees per second

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • DBZ
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

    • VR
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

  /sweep_2(22)

  • Dimensions:
    • sweep: 9
    • azimuth: 482
    • range: 996
  • Coordinates: (4)
    • azimuth
      (azimuth)
      float32
      0.0 0.75 1.5 ... 357.8 358.5 359.2

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],shape=(482,), dtype=float32)

    • elevation
      (azimuth)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [482 values with dtype=float32]

    • time
      (azimuth)
      datetime64[ns]
      2008-06-04T00:17:07 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:17:07.000000000', '2008-06-04T00:17:08.000000000','2008-06-04T00:17:08.000000000', ..., '2008-06-04T00:17:07.000000000','2008-06-04T00:17:07.000000000', '2008-06-04T00:17:07.000000000'],shape=(482,), dtype='datetime64[ns]')

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (18)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      'azimuth_surveillance'

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      array('azimuth_surveillance', dtype='<U20')

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • pulse_width
      (azimuth)
      float32
      ...

      standard_name :

      transmitter_pulse_width

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • prt
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • prt_ratio
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency_ratio

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • nyquist_velocity
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_doppler_velocity

      units :

      meters per second

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • unambiguous_range
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_range

      units :

      meters

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • antenna_transition
      (azimuth)
      int8
      ...

      standard_name :

      antenna_is_in_transition_between_sweeps

      comment :

      1 if antenna is in transition, 0 otherwise

      [482 values with dtype=int8]

    • n_samples
      (azimuth)
      int32
      ...

      standard_name :

      number_of_samples_used_to_compute_moments

      meta_group :

      instrument_parameters

      [482 values with dtype=int32]

    • r_calib_index
      (azimuth)
      int8
      ...

      standard_name :

      calibration_data_array_index_per_ray

      meta_group :

      radar_calibration

      comment :

      This is the index for the calibration which applies to this ray

      [482 values with dtype=int8]

    • measured_transmit_power_h
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [482 values with dtype=float32]

    • measured_transmit_power_v
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [482 values with dtype=float32]

    • scan_rate
      (azimuth)
      float32
      ...

      standard_name :

      antenna_angle_scan_rate

      units :

      degrees per second

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • DBZ
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

    • VR
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

  /sweep_3(22)

  • Dimensions:
    • sweep: 9
    • azimuth: 483
    • range: 996
  • Coordinates: (4)
    • azimuth
      (azimuth)
      float32
      0.0 0.75 1.5 ... 357.8 358.5 359.2

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],shape=(483,), dtype=float32)

    • elevation
      (azimuth)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [483 values with dtype=float32]

    • time
      (azimuth)
      datetime64[ns]
      2008-06-04T00:17:54 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:17:54.000000000', '2008-06-04T00:17:54.000000000','2008-06-04T00:17:55.000000000', ..., '2008-06-04T00:17:54.000000000','2008-06-04T00:17:54.000000000', '2008-06-04T00:17:54.000000000'],shape=(483,), dtype='datetime64[ns]')

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (18)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      'azimuth_surveillance'

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      array('azimuth_surveillance', dtype='<U20')

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • pulse_width
      (azimuth)
      float32
      ...

      standard_name :

      transmitter_pulse_width

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • prt
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • prt_ratio
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency_ratio

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • nyquist_velocity
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_doppler_velocity

      units :

      meters per second

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • unambiguous_range
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_range

      units :

      meters

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • antenna_transition
      (azimuth)
      int8
      ...

      standard_name :

      antenna_is_in_transition_between_sweeps

      comment :

      1 if antenna is in transition, 0 otherwise

      [483 values with dtype=int8]

    • n_samples
      (azimuth)
      int32
      ...

      standard_name :

      number_of_samples_used_to_compute_moments

      meta_group :

      instrument_parameters

      [483 values with dtype=int32]

    • r_calib_index
      (azimuth)
      int8
      ...

      standard_name :

      calibration_data_array_index_per_ray

      meta_group :

      radar_calibration

      comment :

      This is the index for the calibration which applies to this ray

      [483 values with dtype=int8]

    • measured_transmit_power_h
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [483 values with dtype=float32]

    • measured_transmit_power_v
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [483 values with dtype=float32]

    • scan_rate
      (azimuth)
      float32
      ...

      standard_name :

      antenna_angle_scan_rate

      units :

      degrees per second

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • DBZ
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

    • VR
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

  /sweep_4(22)

  • Dimensions:
    • sweep: 9
    • azimuth: 481
    • range: 996
  • Coordinates: (4)
    • azimuth
      (azimuth)
      float32
      0.0 0.75 1.5 ... 357.8 358.5 359.2

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],shape=(481,), dtype=float32)

    • elevation
      (azimuth)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [481 values with dtype=float32]

    • time
      (azimuth)
      datetime64[ns]
      2008-06-04T00:18:41 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:18:41.000000000', '2008-06-04T00:18:41.000000000','2008-06-04T00:18:41.000000000', ..., '2008-06-04T00:18:41.000000000','2008-06-04T00:18:41.000000000', '2008-06-04T00:18:41.000000000'],shape=(481,), dtype='datetime64[ns]')

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (18)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      'azimuth_surveillance'

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      array('azimuth_surveillance', dtype='<U20')

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • pulse_width
      (azimuth)
      float32
      ...

      standard_name :

      transmitter_pulse_width

      units :

      seconds

      meta_group :

      instrument_parameters

      [481 values with dtype=float32]

    • prt
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency

      units :

      seconds

      meta_group :

      instrument_parameters

      [481 values with dtype=float32]

    • prt_ratio
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency_ratio

      units :

      seconds

      meta_group :

      instrument_parameters

      [481 values with dtype=float32]

    • nyquist_velocity
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_doppler_velocity

      units :

      meters per second

      meta_group :

      instrument_parameters

      [481 values with dtype=float32]

    • unambiguous_range
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_range

      units :

      meters

      meta_group :

      instrument_parameters

      [481 values with dtype=float32]

    • antenna_transition
      (azimuth)
      int8
      ...

      standard_name :

      antenna_is_in_transition_between_sweeps

      comment :

      1 if antenna is in transition, 0 otherwise

      [481 values with dtype=int8]

    • n_samples
      (azimuth)
      int32
      ...

      standard_name :

      number_of_samples_used_to_compute_moments

      meta_group :

      instrument_parameters

      [481 values with dtype=int32]

    • r_calib_index
      (azimuth)
      int8
      ...

      standard_name :

      calibration_data_array_index_per_ray

      meta_group :

      radar_calibration

      comment :

      This is the index for the calibration which applies to this ray

      [481 values with dtype=int8]

    • measured_transmit_power_h
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [481 values with dtype=float32]

    • measured_transmit_power_v
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [481 values with dtype=float32]

    • scan_rate
      (azimuth)
      float32
      ...

      standard_name :

      antenna_angle_scan_rate

      units :

      degrees per second

      meta_group :

      instrument_parameters

      [481 values with dtype=float32]

    • DBZ
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [479076 values with dtype=float32]

    • VR
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [479076 values with dtype=float32]

  /sweep_5(22)

  • Dimensions:
    • sweep: 9
    • azimuth: 482
    • range: 996
  • Coordinates: (4)
    • azimuth
      (azimuth)
      float32
      0.0 0.75 1.5 ... 357.8 358.5 359.2

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],shape=(482,), dtype=float32)

    • elevation
      (azimuth)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [482 values with dtype=float32]

    • time
      (azimuth)
      datetime64[ns]
      2008-06-04T00:19:28 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:19:28.000000000', '2008-06-04T00:19:28.000000000','2008-06-04T00:19:28.000000000', ..., '2008-06-04T00:19:28.000000000','2008-06-04T00:19:28.000000000', '2008-06-04T00:19:28.000000000'],shape=(482,), dtype='datetime64[ns]')

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (18)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      'azimuth_surveillance'

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      array('azimuth_surveillance', dtype='<U20')

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • pulse_width
      (azimuth)
      float32
      ...

      standard_name :

      transmitter_pulse_width

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • prt
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • prt_ratio
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency_ratio

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • nyquist_velocity
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_doppler_velocity

      units :

      meters per second

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • unambiguous_range
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_range

      units :

      meters

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • antenna_transition
      (azimuth)
      int8
      ...

      standard_name :

      antenna_is_in_transition_between_sweeps

      comment :

      1 if antenna is in transition, 0 otherwise

      [482 values with dtype=int8]

    • n_samples
      (azimuth)
      int32
      ...

      standard_name :

      number_of_samples_used_to_compute_moments

      meta_group :

      instrument_parameters

      [482 values with dtype=int32]

    • r_calib_index
      (azimuth)
      int8
      ...

      standard_name :

      calibration_data_array_index_per_ray

      meta_group :

      radar_calibration

      comment :

      This is the index for the calibration which applies to this ray

      [482 values with dtype=int8]

    • measured_transmit_power_h
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [482 values with dtype=float32]

    • measured_transmit_power_v
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [482 values with dtype=float32]

    • scan_rate
      (azimuth)
      float32
      ...

      standard_name :

      antenna_angle_scan_rate

      units :

      degrees per second

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • DBZ
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

    • VR
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

  /sweep_6(22)

  • Dimensions:
    • sweep: 9
    • azimuth: 482
    • range: 996
  • Coordinates: (4)
    • azimuth
      (azimuth)
      float32
      0.0 0.75 1.5 ... 357.8 358.5 359.2

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],shape=(482,), dtype=float32)

    • elevation
      (azimuth)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [482 values with dtype=float32]

    • time
      (azimuth)
      datetime64[ns]
      2008-06-04T00:20:15 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:20:15.000000000', '2008-06-04T00:20:15.000000000','2008-06-04T00:20:15.000000000', ..., '2008-06-04T00:20:15.000000000','2008-06-04T00:20:15.000000000', '2008-06-04T00:20:15.000000000'],shape=(482,), dtype='datetime64[ns]')

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (18)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      'azimuth_surveillance'

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      array('azimuth_surveillance', dtype='<U20')

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • pulse_width
      (azimuth)
      float32
      ...

      standard_name :

      transmitter_pulse_width

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • prt
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • prt_ratio
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency_ratio

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • nyquist_velocity
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_doppler_velocity

      units :

      meters per second

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • unambiguous_range
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_range

      units :

      meters

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • antenna_transition
      (azimuth)
      int8
      ...

      standard_name :

      antenna_is_in_transition_between_sweeps

      comment :

      1 if antenna is in transition, 0 otherwise

      [482 values with dtype=int8]

    • n_samples
      (azimuth)
      int32
      ...

      standard_name :

      number_of_samples_used_to_compute_moments

      meta_group :

      instrument_parameters

      [482 values with dtype=int32]

    • r_calib_index
      (azimuth)
      int8
      ...

      standard_name :

      calibration_data_array_index_per_ray

      meta_group :

      radar_calibration

      comment :

      This is the index for the calibration which applies to this ray

      [482 values with dtype=int8]

    • measured_transmit_power_h
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [482 values with dtype=float32]

    • measured_transmit_power_v
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [482 values with dtype=float32]

    • scan_rate
      (azimuth)
      float32
      ...

      standard_name :

      antenna_angle_scan_rate

      units :

      degrees per second

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • DBZ
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

    • VR
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

  /sweep_7(22)

  • Too many items to display (display_max_html_elements exceeded)

  /sweep_8(22)

  • Too many items to display (display_max_html_elements exceeded)
• Dimensions:
  • sweep: 9
• Coordinates: (3)
  • latitude
    ()
    float64
    ...

    standard_name :

    latitude

    units :

    degrees_north

    [1 values with dtype=float64]

  • longitude
    ()
    float64
    ...

    standard_name :

    longitude

    units :

    degrees_east

    [1 values with dtype=float64]

  • altitude
    ()
    float64
    ...

    standard_name :

    altitude

    units :

    meters

    positive :

    up

    [1 values with dtype=float64]

• Data variables: (9)
  • volume_number
    ()
    int32
    ...

    standard_name :

    data_volume_index_number

    [1 values with dtype=int32]

  • platform_type
    ()
    |S32
    ...

    standard_name :

    platform_type

    options :

    fixed, vehicle, ship, aircraft_fore, aircraft_aft, aircraft_tail, aircraft_belly, aircraft_roof, aircraft_nose, satellite_orbit, satellite_geostat

    [1 values with dtype=|S32]

  • primary_axis
    ()
    |S32
    ...

    standard_name :

    primary_axis_of_rotation

    options :

    axis_z, axis_y, axis_x

    [1 values with dtype=|S32]

  • status_str
    ()
    |S1
    ...

    standard_name :

    status_xml

    [1 values with dtype=|S1]

  • instrument_type
    ()
    |S32
    ...

    standard_name :

    type_of_instrument

    options :

    radar, lidar

    meta_group :

    instrument_parameters

    [1 values with dtype=|S32]

  • time_coverage_start
    ()
    |S32
    ...

    standard_name :

    data_volume_start_time_utc

    comment :

    ray times are relative to start time in secs

    [1 values with dtype=|S32]

  • time_coverage_end
    ()
    |S32
    ...

    standard_name :

    data_volume_end_time_utc

    [1 values with dtype=|S32]

  • sweep_group_name
    (sweep)
    <U7
    'sweep_0' 'sweep_1' ... 'sweep_8'

    array(['sweep_0', 'sweep_1', 'sweep_2', 'sweep_3', 'sweep_4', 'sweep_5',
           'sweep_6', 'sweep_7', 'sweep_8'], dtype='<U7')

  • sweep_fixed_angle
    (sweep)
    float32
    ...

    standard_name :

    beam_target_fixed_angle

    units :

    degrees

    [9 values with dtype=float32]

• Attributes: (13)

  Conventions :

  CF/Radial instrument_parameters radar_parameters radar_calibration geometry_correction

  version :

  1.2

  title :

  TIMREX

  institution :

  references :

  source :

  history :

  comment :

  instrument_name :

  SPOLRVP8

  site_name :

  scan_name :

  scan_id :

  0

  platform_is_mobile :

  false

Each DataTree-node itself represents another DataTree.

display(dtree["radar_parameters"].load())

<xarray.DataTree 'radar_parameters'>
Group: /radar_parameters
    Dimensions:                   (sweep: 9)
    Dimensions without coordinates: sweep
    Data variables:
        radar_beam_width_h        float32 4B 0.92
        radar_receiver_bandwidth  float32 4B -9.999e+03
        radar_antenna_gain_v      float32 4B 45.15
        radar_antenna_gain_h      float32 4B 45.15
        radar_beam_width_v        float32 4B 0.92

xarray.DataTree

'radar_parameters'

• Dimensions:
  • sweep: 9
• Data variables: (5)
  • radar_beam_width_h
    ()
    float32
    0.92

    standard_name :

    half_power_radar_beam_width_h_channel

    units :

    degrees

    meta_group :

    radar_parameters

    array(0.92, dtype=float32)

  • radar_receiver_bandwidth
    ()
    float32
    -9.999e+03

    standard_name :

    radar_receiver_bandwidth

    units :

    s-1

    meta_group :

    radar_parameters

    array(-9999., dtype=float32)

  • radar_antenna_gain_v
    ()
    float32
    45.15

    standard_name :

    nominal_radar_antenna_gain_v_channel

    units :

    dB

    meta_group :

    radar_parameters

    array(45.15, dtype=float32)

  • radar_antenna_gain_h
    ()
    float32
    45.15

    standard_name :

    nominal_radar_antenna_gain_h_channel

    units :

    dB

    meta_group :

    radar_parameters

    array(45.15, dtype=float32)

  • radar_beam_width_v
    ()
    float32
    0.92

    standard_name :

    half_power_radar_beam_width_v_channel

    units :

    degrees

    meta_group :

    radar_parameters

    array(0.92, dtype=float32)

with xr.set_options(display_expand_data_vars=True):
    display(dtree["sweep_7"].load())

<xarray.DataTree 'sweep_7'>
Group: /sweep_7
    Dimensions:                    (sweep: 9, azimuth: 484, range: 996)
    Coordinates:
      * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
        elevation                  (azimuth) float32 2kB 9.102 9.102 ... 9.102 9.102
        time                       (azimuth) datetime64[ns] 4kB 2008-06-04T00:21:...
      * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
    Dimensions without coordinates: sweep
    Data variables: (12/18)
        sweep_number               int32 4B 7
        sweep_mode                 <U20 80B 'azimuth_surveillance'
        prt_mode                   |S32 32B b'not_set'
        follow_mode                |S32 32B b'not_set'
        sweep_fixed_angle          float32 4B 9.102
        pulse_width                (azimuth) float32 2kB 0.0 0.0 0.0 ... 0.0 0.0 0.0
        ...                         ...
        r_calib_index              (azimuth) int8 484B -1 -1 -1 -1 ... -1 -1 -1 -1
        measured_transmit_power_h  (azimuth) float32 2kB -9.999e+03 ... -9.999e+03
        measured_transmit_power_v  (azimuth) float32 2kB -9.999e+03 ... -9.999e+03
        scan_rate                  (azimuth) float32 2kB -3.277e+04 ... -3.277e+04
        DBZ                        (azimuth, range) float32 2MB 21.88 ... -8.661
        VR                         (azimuth, range) float32 2MB -0.4204 ... 11.4

xarray.DataTree

'sweep_7'

• Dimensions:
  • sweep: 9
  • azimuth: 484
  • range: 996
• Coordinates: (4)
  • azimuth
    (azimuth)
    float32
    0.0 0.75 1.5 ... 357.8 358.5 359.2

    standard_name :

    beam_azimuth_angle

    units :

    degrees

    array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],
          shape=(484,), dtype=float32)

  • elevation
    (azimuth)
    float32
    9.102 9.102 9.102 ... 9.102 9.102

    standard_name :

    beam_elevation_angle

    units :

    degrees

    positive :

    up

    array([9.1023, 9.1023, 9.1023, 9.1023, 9.1023, 9.1023, 9.1023, 9.1023,
           9.1023, 9.1023, 9.1023, 9.1023, 9.1023, 9.1023, 9.1023, 9.1023,
           9.1023, 9.1023, 9.1023, 9.1023, 9.1023, 9.1023, 9.1023, 9.1023,
           9.1023, 9.1023, 9.1023, 9.1023, 9.0968, 9.0913, 9.0968, 9.0968,
           9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968,
           9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968,
           9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968,
           9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968,
           9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968,
           9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968,
           9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968,
           9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968,
           9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968,
           9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968,
           9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968,
           9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968,
           9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968,
           9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968,
           9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968,
           9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968, 9.0968,
    ...
           9.1902, 9.1902, 9.1902, 9.1902, 9.1902, 9.1902, 9.1902, 9.1902,
           9.1902, 9.1902, 9.1847, 9.1847, 9.1847, 9.1847, 9.1792, 9.1737,
           9.1682, 9.1627, 9.1627, 9.1627, 9.1627, 9.1627, 9.1627, 9.1627,
           9.1627, 9.1627, 9.1627, 9.1627, 9.1627, 9.1627, 9.1627, 9.1627,
           9.1627, 9.1572, 9.1518, 9.1463, 9.1463, 9.1408, 9.1408, 9.1408,
           9.1408, 9.1408, 9.1408, 9.1408, 9.1408, 9.1408, 9.1408, 9.1408,
           9.1408, 9.1408, 9.1408, 9.1408, 9.1408, 9.1408, 9.1408, 9.1408,
           9.1298, 9.1353, 9.1353, 9.1298, 9.1243, 9.1243, 9.1298, 9.1243,
           9.1243, 9.1243, 9.1243, 9.1243, 9.1243, 9.1243, 9.1243, 9.1243,
           9.1243, 9.1243, 9.1243, 9.1243, 9.1243, 9.1243, 9.1243, 9.1243,
           9.1243, 9.1243, 9.1243, 9.1243, 9.1243, 9.1188, 9.1188, 9.1188,
           9.1188, 9.1188, 9.1078, 9.1133, 9.1133, 9.1078, 9.1133, 9.1133,
           9.1133, 9.1133, 9.1133, 9.1133, 9.1133, 9.1133, 9.1133, 9.1133,
           9.1133, 9.1133, 9.1133, 9.1133, 9.1133, 9.1133, 9.1133, 9.1133,
           9.1133, 9.1133, 9.1133, 9.1133, 9.1133, 9.1133, 9.1133, 9.1133,
           9.1133, 9.1133, 9.1133, 9.1078, 9.1078, 9.1078, 9.1078, 9.1078,
           9.1078, 9.1078, 9.1023, 9.1023, 9.1023, 9.1023, 9.1023, 9.1023,
           9.1023, 9.1023, 9.1023, 9.1023, 9.1023, 9.1023, 9.1023, 9.1023,
           9.1023, 9.1023, 9.1023, 9.1023, 9.1023, 9.1023, 9.1023, 9.1023,
           9.1023, 9.1023, 9.1023, 9.1023], dtype=float32)

  • time
    (azimuth)
    datetime64[ns]
    2008-06-04T00:21:02 ... 2008-06-...

    standard_name :

    time

    long_name :

    time in seconds since volume start

    comment :

    times are relative to the volume start_time

    array(['2008-06-04T00:21:02.000000000', '2008-06-04T00:21:02.000000000',
           '2008-06-04T00:21:02.000000000', '2008-06-04T00:21:02.000000000',
           '2008-06-04T00:21:02.000000000', '2008-06-04T00:21:02.000000000',
           '2008-06-04T00:21:03.000000000', '2008-06-04T00:21:03.000000000',
           '2008-06-04T00:21:03.000000000', '2008-06-04T00:21:03.000000000',
           '2008-06-04T00:21:03.000000000', '2008-06-04T00:21:03.000000000',
           '2008-06-04T00:21:03.000000000', '2008-06-04T00:21:03.000000000',
           '2008-06-04T00:21:03.000000000', '2008-06-04T00:21:03.000000000',
           '2008-06-04T00:21:04.000000000', '2008-06-04T00:21:04.000000000',
           '2008-06-04T00:21:04.000000000', '2008-06-04T00:21:04.000000000',
           '2008-06-04T00:21:04.000000000', '2008-06-04T00:21:04.000000000',
           '2008-06-04T00:21:04.000000000', '2008-06-04T00:21:04.000000000',
           '2008-06-04T00:21:04.000000000', '2008-06-04T00:21:04.000000000',
           '2008-06-04T00:21:05.000000000', '2008-06-04T00:21:05.000000000',
           '2008-06-04T00:21:05.000000000', '2008-06-04T00:21:05.000000000',
           '2008-06-04T00:21:05.000000000', '2008-06-04T00:21:05.000000000',
           '2008-06-04T00:21:05.000000000', '2008-06-04T00:21:05.000000000',
           '2008-06-04T00:21:05.000000000', '2008-06-04T00:21:05.000000000',
           '2008-06-04T00:21:06.000000000', '2008-06-04T00:21:06.000000000',
           '2008-06-04T00:21:06.000000000', '2008-06-04T00:21:06.000000000',
    ...
           '2008-06-04T00:20:58.000000000', '2008-06-04T00:20:58.000000000',
           '2008-06-04T00:20:58.000000000', '2008-06-04T00:20:59.000000000',
           '2008-06-04T00:20:59.000000000', '2008-06-04T00:20:59.000000000',
           '2008-06-04T00:20:59.000000000', '2008-06-04T00:20:59.000000000',
           '2008-06-04T00:20:59.000000000', '2008-06-04T00:20:59.000000000',
           '2008-06-04T00:20:59.000000000', '2008-06-04T00:20:59.000000000',
           '2008-06-04T00:20:59.000000000', '2008-06-04T00:21:00.000000000',
           '2008-06-04T00:21:00.000000000', '2008-06-04T00:21:00.000000000',
           '2008-06-04T00:21:00.000000000', '2008-06-04T00:21:00.000000000',
           '2008-06-04T00:21:00.000000000', '2008-06-04T00:21:00.000000000',
           '2008-06-04T00:21:00.000000000', '2008-06-04T00:21:00.000000000',
           '2008-06-04T00:21:00.000000000', '2008-06-04T00:21:01.000000000',
           '2008-06-04T00:21:01.000000000', '2008-06-04T00:21:01.000000000',
           '2008-06-04T00:21:01.000000000', '2008-06-04T00:21:01.000000000',
           '2008-06-04T00:21:01.000000000', '2008-06-04T00:21:01.000000000',
           '2008-06-04T00:21:01.000000000', '2008-06-04T00:21:01.000000000',
           '2008-06-04T00:21:01.000000000', '2008-06-04T00:21:01.000000000',
           '2008-06-04T00:21:02.000000000', '2008-06-04T00:21:02.000000000',
           '2008-06-04T00:21:02.000000000', '2008-06-04T00:21:02.000000000'],
          dtype='datetime64[ns]')

  • range
    (range)
    float32
    150.0 300.0 ... 1.492e+05 1.494e+05

    standard_name :

    range_to_center_of_measurement_volume

    long_name :

    Range from instrument to center of gate

    units :

    meters

    spacing_is_constant :

    true

    meters_to_center_of_first_gate :

    150.00000596046448

    meters_between_gates :

    150.00000596046448

    array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,
           149250.     , 149400.     ], shape=(996,), dtype=float32)

• Data variables: (18)
  • sweep_number
    ()
    int32
    7

    standard_name :

    sweep_index_number_0_based

    array(7, dtype=int32)

  • sweep_mode
    ()
    <U20
    'azimuth_surveillance'

    standard_name :

    scan_mode_for_sweep

    options :

    sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

    array('azimuth_surveillance', dtype='<U20')

  • prt_mode
    ()
    |S32
    b'not_set'

    standard_name :

    transmit_pulse_mode

    options :

    fixed, staggered, dual

    meta_group :

    radar_parameters

    array(b'not_set', dtype='|S32')

  • follow_mode
    ()
    |S32
    b'not_set'

    standard_name :

    follow_mode_for_scan_strategy

    options :

    none, sun, vehicle, aircraft, target, manual

    meta_group :

    instrument_parameters

    array(b'not_set', dtype='|S32')

  • sweep_fixed_angle
    ()
    float32
    9.102

    standard_name :

    beam_target_fixed_angle

    units :

    degrees

    array(9.1022, dtype=float32)

  • pulse_width
    (azimuth)
    float32
    0.0 0.0 0.0 0.0 ... 0.0 0.0 0.0 0.0

    standard_name :

    transmitter_pulse_width

    units :

    seconds

    meta_group :

    instrument_parameters

    array([0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0.], dtype=float32)

  • prt
    (azimuth)
    float32
    -9.999e+03 ... -9.999e+03

    standard_name :

    pulse_repetition_frequency

    units :

    seconds

    meta_group :

    instrument_parameters

    array([-9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
    ...
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999.], dtype=float32)

  • prt_ratio
    (azimuth)
    float32
    -9.999e+03 ... -9.999e+03

    standard_name :

    pulse_repetition_frequency_ratio

    units :

    seconds

    meta_group :

    instrument_parameters

    array([-9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
    ...
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999.], dtype=float32)

  • nyquist_velocity
    (azimuth)
    float32
    26.92 26.92 26.92 ... 26.92 26.92

    standard_name :

    unambiguous_doppler_velocity

    units :

    meters per second

    meta_group :

    instrument_parameters

    array([26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
    ...
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925], dtype=float32)

  • unambiguous_range
    (azimuth)
    float32
    1.5e+05 1.5e+05 ... 1.5e+05 1.5e+05

    standard_name :

    unambiguous_range

    units :

    meters

    meta_group :

    instrument_parameters

    array([150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
    ...
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000.], dtype=float32)

  • antenna_transition
    (azimuth)
    int8
    0 0 0 0 0 0 0 0 ... 0 0 0 0 0 0 0 0

    standard_name :

    antenna_is_in_transition_between_sweeps

    comment :

    1 if antenna is in transition, 0 otherwise

    array([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
          dtype=int8)

  • n_samples
    (azimuth)
    int32
    192 192 192 192 ... 192 192 192 192

    standard_name :

    number_of_samples_used_to_compute_moments

    meta_group :

    instrument_parameters

    array([192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192], dtype=int32)

  • r_calib_index
    (azimuth)
    int8
    -1 -1 -1 -1 -1 ... -1 -1 -1 -1 -1

    standard_name :

    calibration_data_array_index_per_ray

    meta_group :

    radar_calibration

    comment :

    This is the index for the calibration which applies to this ray

    array([-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1], dtype=int8)

  • measured_transmit_power_h
    (azimuth)
    float32
    -9.999e+03 ... -9.999e+03

    standard_name :

    measured_radar_transmit_power_h_channel

    units :

    dBm

    meta_group :

    radar_parameters

    array([-9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
    ...
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999.], dtype=float32)

  • measured_transmit_power_v
    (azimuth)
    float32
    -9.999e+03 ... -9.999e+03

    standard_name :

    measured_radar_transmit_power_v_channel

    units :

    dBm

    meta_group :

    radar_parameters

    array([-9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
    ...
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999.], dtype=float32)

  • scan_rate
    (azimuth)
    float32
    -3.277e+04 ... -3.277e+04

    standard_name :

    antenna_angle_scan_rate

    units :

    degrees per second

    meta_group :

    instrument_parameters

    array([-32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
    ...
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768.], dtype=float32)

  • DBZ
    (azimuth, range)
    float32
    21.88 34.48 33.03 ... -7.021 -8.661

    long_name :

    Computed Horizontal Co-polar Reflectivit

    standard_name :

    equivalent_reflectivity_factor

    units :

    dBZ

    threshold_field_name :

    threshold_value :

    -9999.0

    sampling_ratio :

    1.0

    grid_mapping :

    grid_mapping

    array([[ 21.879642  ,  34.479538  ,  33.029804  , ...,          nan,
                     nan, -11.069831  ],
           [ 19.799204  ,  28.119184  ,  30.389725  , ...,  -6.7295117 ,
                     nan,          nan],
           [ 21.140562  ,  26.77072   ,  31.26916   , ...,  -8.680257  ,
             -8.669597  ,          nan],
           ...,
           [ 19.42078   ,  31.37931   ,  28.780094  , ...,  -8.680257  ,
                     nan,  -8.660714  ],
           [-15.23071   ,  -0.66052616,   5.779776  , ...,  -6.109466  ,
             -6.230277  ,  -8.660714  ],
           [ 18.059877  ,  28.609537  ,  30.26003   , ...,          nan,
             -7.0208797 ,  -8.660714  ]], shape=(484, 996), dtype=float32)

  • VR
    (azimuth, range)
    float32
    -0.4204 0.3599 ... -26.24 11.4

    long_name :

    Computed Velocity

    standard_name :

    radial_velocity_of_scatterers_away_from_instrument

    units :

    m/s

    threshold_field_name :

    threshold_value :

    -9999.0

    sampling_ratio :

    1.0

    grid_mapping :

    grid_mapping

    array([[ -0.42039856,   0.35987425,   0.34024474, ...,          nan,
                     nan,  14.139787  ],
           [ -0.17012237,   0.2699057 ,   0.4702902 , ...,  -3.0597491 ,
                     nan,          nan],
           [ 26.66014   ,   0.8702414 ,   0.6003357 , ..., -10.540226  ,
              1.109885  ,          nan],
           ...,
           [ -0.20038453,   0.08015382,   0.5201819 , ..., -25.079964  ,
                     nan,   3.8203924 ],
           [ -0.39995116,   2.1298013 ,   1.0796227 , ...,  25.919943  ,
             17.26006   ,  20.56027   ],
           [ -0.3296121 ,   2.2999237 ,   0.4997345 , ...,          nan,
            -26.23974   ,  11.399835  ]], shape=(484, 996), dtype=float32)

Roundtrip with to_netcdf

Write DataTree to netCDF4 file, reopen and compare with source. This just tets if roundtripping the DataTree works.

outfile = "test_dtree.nc"
if os.path.exists(outfile):
    os.unlink(outfile)
dtree.to_netcdf(outfile)

dtree2 = xr.open_datatree(outfile, decode_timedelta=False)
with xr.set_options(display_expand_data_vars=True, display_expand_attrs=True):
    display(dtree2)

<xarray.DataTree>
Group: /
│   Dimensions:              (sweep: 9)
│   Coordinates:
│       latitude             float64 8B ...
│       longitude            float64 8B ...
│       altitude             float64 8B ...
│   Dimensions without coordinates: sweep
│   Data variables:
│       volume_number        int32 4B ...
│       platform_type        |S32 32B ...
│       primary_axis         |S32 32B ...
│       status_str           |S1 1B ...
│       instrument_type      |S32 32B ...
│       time_coverage_start  |S32 32B ...
│       time_coverage_end    |S32 32B ...
│       sweep_group_name     (sweep) <U7 252B ...
│       sweep_fixed_angle    (sweep) float32 36B ...
│   Attributes: (12/13)
│       Conventions:         CF/Radial instrument_parameters radar_parameters rad...
│       version:             1.2
│       title:               TIMREX
│       institution:         
│       references:          
│       source:              
│       ...                  ...
│       comment:             
│       instrument_name:     SPOLRVP8
│       site_name:           
│       scan_name:           
│       scan_id:             0
│       platform_is_mobile:  false
├── Group: /radar_parameters
│       Dimensions:                   ()
│       Data variables:
│           radar_beam_width_h        float32 4B ...
│           radar_receiver_bandwidth  float32 4B ...
│           radar_antenna_gain_v      float32 4B ...
│           radar_antenna_gain_h      float32 4B ...
│           radar_beam_width_v        float32 4B ...
├── Group: /georeferencing_correction
│       Dimensions:                            ()
│       Data variables: (12/16)
│           longitude_correction               float32 4B ...
│           rotation_correction                float32 4B ...
│           pitch_correction                   float32 4B ...
│           elevation_correction               float32 4B ...
│           northward_ground_speed_correction  float32 4B ...
│           latitude_correction                float32 4B ...
│           ...                                 ...
│           eastward_ground_speed_correction   float32 4B ...
│           roll_correction                    float32 4B ...
│           tilt_correction                    float32 4B ...
│           vertical_velocity_correction       float32 4B ...
│           drift_correction                   float32 4B ...
│           azimuth_correction                 float32 4B ...
├── Group: /radar_calibration
│       Dimensions:                   ()
│       Data variables: (12/45)
│           time                      |S32 32B ...
│           pulse_width               float32 4B ...
│           xmit_power_h              float32 4B ...
│           xmit_power_v              float32 4B ...
│           two_way_waveguide_loss_h  float32 4B ...
│           two_way_waveguide_loss_v  float32 4B ...
│           ...                        ...
│           test_power_h              float32 4B ...
│           test_power_v              float32 4B ...
│           receiver_slope_hc         float32 4B ...
│           receiver_slope_vc         float32 4B ...
│           receiver_slope_hx         float32 4B ...
│           receiver_slope_vx         float32 4B ...
├── Group: /sweep_0
│       Dimensions:                    (azimuth: 483, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB ...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B ...
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 483B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
├── Group: /sweep_1
│       Dimensions:                    (azimuth: 483, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB ...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B ...
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 483B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
├── Group: /sweep_2
│       Dimensions:                    (azimuth: 482, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB ...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B ...
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 482B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
├── Group: /sweep_3
│       Dimensions:                    (azimuth: 483, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB ...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B ...
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 483B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
├── Group: /sweep_4
│       Dimensions:                    (azimuth: 481, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB ...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B ...
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 481B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
├── Group: /sweep_5
│       Dimensions:                    (azimuth: 482, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB ...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B ...
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 482B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
├── Group: /sweep_6
│       Dimensions:                    (azimuth: 482, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB ...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B ...
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 482B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
├── Group: /sweep_7
│       Dimensions:                    (azimuth: 484, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB ...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B ...
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 484B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
└── Group: /sweep_8
        Dimensions:                    (azimuth: 483, range: 996)
        Coordinates:
          * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
            elevation                  (azimuth) float32 2kB ...
            time                       (azimuth) datetime64[ns] 4kB ...
          * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
        Data variables: (12/18)
            sweep_number               int32 4B ...
            sweep_mode                 <U20 80B ...
            prt_mode                   |S32 32B ...
            follow_mode                |S32 32B ...
            sweep_fixed_angle          float32 4B ...
            pulse_width                (azimuth) float32 2kB ...
            ...                         ...
            r_calib_index              (azimuth) int8 483B ...
            measured_transmit_power_h  (azimuth) float32 2kB ...
            measured_transmit_power_v  (azimuth) float32 2kB ...
            scan_rate                  (azimuth) float32 2kB ...
            DBZ                        (azimuth, range) float32 2MB ...
            VR                         (azimuth, range) float32 2MB ...

xarray.DataTree

• /radar_parameters(5)

  • Dimensions:
    • sweep: 9
  • Data variables: (5)
    • radar_beam_width_h
      ()
      float32
      ...

      standard_name :

      half_power_radar_beam_width_h_channel

      units :

      degrees

      meta_group :

      radar_parameters

      [1 values with dtype=float32]

    • radar_receiver_bandwidth
      ()
      float32
      ...

      standard_name :

      radar_receiver_bandwidth

      units :

      s-1

      meta_group :

      radar_parameters

      [1 values with dtype=float32]

    • radar_antenna_gain_v
      ()
      float32
      ...

      standard_name :

      nominal_radar_antenna_gain_v_channel

      units :

      dB

      meta_group :

      radar_parameters

      [1 values with dtype=float32]

    • radar_antenna_gain_h
      ()
      float32
      ...

      standard_name :

      nominal_radar_antenna_gain_h_channel

      units :

      dB

      meta_group :

      radar_parameters

      [1 values with dtype=float32]

    • radar_beam_width_v
      ()
      float32
      ...

      standard_name :

      half_power_radar_beam_width_v_channel

      units :

      degrees

      meta_group :

      radar_parameters

      [1 values with dtype=float32]

  /georeferencing_correction(16)

  • Dimensions:
    • sweep: 9
  • Data variables: (16)
    • longitude_correction
      ()
      float32
      ...

      standard_name :

      longitude_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • rotation_correction
      ()
      float32
      ...

      standard_name :

      beam_rotation_angle_relative_to_platform_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • pitch_correction
      ()
      float32
      ...

      standard_name :

      platform_pitch_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • elevation_correction
      ()
      float32
      ...

      standard_name :

      beam_elevation_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • northward_ground_speed_correction
      ()
      float32
      ...

      standard_name :

      platform_northward_velocity_correction

      units :

      meters per second

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • latitude_correction
      ()
      float32
      ...

      standard_name :

      latitude_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • pressure_altitude_correction
      ()
      float32
      ...

      standard_name :

      pressure_altitude_correction

      units :

      meters

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • radar_altitude_correction
      ()
      float32
      ...

      standard_name :

      altitude_correction

      units :

      meters

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • range_correction
      ()
      float32
      ...

      standard_name :

      range_to_center_of_measurement_volume_correction

      units :

      meters

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • heading_correction
      ()
      float32
      ...

      standard_name :

      platform_heading_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • eastward_ground_speed_correction
      ()
      float32
      ...

      standard_name :

      platform_eastward_velocity_correction

      units :

      meters per second

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • roll_correction
      ()
      float32
      ...

      standard_name :

      platform_roll_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • tilt_correction
      ()
      float32
      ...

      standard_name :

      beam_tilt_angle_relative_to_platform_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • vertical_velocity_correction
      ()
      float32
      ...

      standard_name :

      platform_vertical_velocity_correction

      units :

      meters per second

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • drift_correction
      ()
      float32
      ...

      standard_name :

      platform_drift_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • azimuth_correction
      ()
      float32
      ...

      standard_name :

      azimuth_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

  /radar_calibration(45)

  • Dimensions:
    • sweep: 9
  • Data variables: (45)
    • time
      ()
      |S32
      ...

      standard_name :

      radar_calibration_time_utc

      meta_group :

      radar_calibration

      [1 values with dtype=|S32]

    • pulse_width
      ()
      float32
      ...

      standard_name :

      radar_calibration_pulse_width

      units :

      seconds

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • xmit_power_h
      ()
      float32
      ...

      standard_name :

      calibrated_radar_xmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • xmit_power_v
      ()
      float32
      ...

      standard_name :

      calibrated_radar_xmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • two_way_waveguide_loss_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_two_way_waveguide_loss_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • two_way_waveguide_loss_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_two_way_waveguide_loss_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • two_way_radome_loss_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_two_way_radome_loss_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • two_way_radome_loss_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_two_way_radome_loss_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_mismatch_loss
      ()
      float32
      ...

      standard_name :

      radar_calibration_receiver_mismatch_loss

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • radar_constant_h
      ()
      float32
      ...

      standard_name :

      calibrated_radar_constant_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • radar_constant_v
      ()
      float32
      ...

      standard_name :

      calibrated_radar_constant_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • antenna_gain_h
      ()
      float32
      ...

      standard_name :

      calibrated_radar_antenna_gain_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • antenna_gain_v
      ()
      float32
      ...

      standard_name :

      calibrated_radar_antenna_gain_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_hc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_noise_h_co_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_vc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_noise_v_co_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_hx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_noise_h_cross_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_vx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_noise_v_cross_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_gain_hc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_gain_h_co_polar_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_gain_vc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_gain_v_co_polar_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_gain_hx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_gain_h_cross_polar_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_gain_vx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_gain_v_cross_polar_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • base_1km_hc
      ()
      float32
      ...

      standard_name :

      radar_reflectivity_at_1km_at_zero_snr_h_co_polar_channel

      units :

      dBZ

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • base_1km_vc
      ()
      float32
      ...

      standard_name :

      radar_reflectivity_at_1km_at_zero_snr_v_co_polar_channel

      units :

      dBZ

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • base_1km_hx
      ()
      float32
      ...

      standard_name :

      radar_reflectivity_at_1km_at_zero_snr_h_cross_polar_channel

      units :

      dBZ

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • base_1km_vx
      ()
      float32
      ...

      standard_name :

      radar_reflectivity_at_1km_at_zero_snr_v_cross_polar_channel

      units :

      dBZ

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • sun_power_hc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_sun_power_h_co_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • sun_power_vc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_sun_power_v_co_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • sun_power_hx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_sun_power_h_cross_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • sun_power_vx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_sun_power_v_cross_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_source_power_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_noise_source_power_h_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_source_power_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_noise_source_power_v_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • power_measure_loss_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_power_measurement_loss_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • power_measure_loss_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_power_measurement_loss_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • coupler_forward_loss_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_coupler_forward_loss_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • coupler_forward_loss_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_coupler_forward_loss_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • zdr_correction
      ()
      float32
      ...

      standard_name :

      calibrated_radar_zdr_correction

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • ldr_correction_h
      ()
      float32
      ...

      standard_name :

      calibrated_radar_ldr_correction_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • ldr_correction_v
      ()
      float32
      ...

      standard_name :

      calibrated_radar_ldr_correction_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • system_phidp
      ()
      float32
      ...

      standard_name :

      calibrated_radar_system_phidp

      units :

      degrees

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • test_power_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_test_power_h_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • test_power_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_test_power_v_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_slope_hc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_slope_h_co_polar_channel

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_slope_vc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_slope_v_co_polar_channel

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_slope_hx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_slope_h_cross_polar_channel

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_slope_vx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_slope_v_cross_polar_channel

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

  /sweep_0(22)

  • Dimensions:
    • sweep: 9
    • azimuth: 483
    • range: 996
  • Coordinates: (4)
    • azimuth
      (azimuth)
      float32
      0.0 0.75 1.5 ... 357.8 358.5 359.2

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],shape=(483,), dtype=float32)

    • elevation
      (azimuth)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [483 values with dtype=float32]

    • time
      (azimuth)
      datetime64[ns]
      ...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      [483 values with dtype=datetime64[ns]]

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (18)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      ...

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      [1 values with dtype=<U20]

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • pulse_width
      (azimuth)
      float32
      ...

      standard_name :

      transmitter_pulse_width

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • prt
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • prt_ratio
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency_ratio

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • nyquist_velocity
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_doppler_velocity

      units :

      meters per second

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • unambiguous_range
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_range

      units :

      meters

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • antenna_transition
      (azimuth)
      int8
      ...

      standard_name :

      antenna_is_in_transition_between_sweeps

      comment :

      1 if antenna is in transition, 0 otherwise

      [483 values with dtype=int8]

    • n_samples
      (azimuth)
      int32
      ...

      standard_name :

      number_of_samples_used_to_compute_moments

      meta_group :

      instrument_parameters

      [483 values with dtype=int32]

    • r_calib_index
      (azimuth)
      int8
      ...

      standard_name :

      calibration_data_array_index_per_ray

      meta_group :

      radar_calibration

      comment :

      This is the index for the calibration which applies to this ray

      [483 values with dtype=int8]

    • measured_transmit_power_h
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [483 values with dtype=float32]

    • measured_transmit_power_v
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [483 values with dtype=float32]

    • scan_rate
      (azimuth)
      float32
      ...

      standard_name :

      antenna_angle_scan_rate

      units :

      degrees per second

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • DBZ
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

    • VR
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

  /sweep_1(22)

  • Dimensions:
    • sweep: 9
    • azimuth: 483
    • range: 996
  • Coordinates: (4)
    • azimuth
      (azimuth)
      float32
      0.0 0.75 1.5 ... 357.8 358.5 359.2

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],shape=(483,), dtype=float32)

    • elevation
      (azimuth)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [483 values with dtype=float32]

    • time
      (azimuth)
      datetime64[ns]
      ...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      [483 values with dtype=datetime64[ns]]

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (18)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      ...

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      [1 values with dtype=<U20]

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • pulse_width
      (azimuth)
      float32
      ...

      standard_name :

      transmitter_pulse_width

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • prt
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • prt_ratio
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency_ratio

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • nyquist_velocity
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_doppler_velocity

      units :

      meters per second

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • unambiguous_range
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_range

      units :

      meters

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • antenna_transition
      (azimuth)
      int8
      ...

      standard_name :

      antenna_is_in_transition_between_sweeps

      comment :

      1 if antenna is in transition, 0 otherwise

      [483 values with dtype=int8]

    • n_samples
      (azimuth)
      int32
      ...

      standard_name :

      number_of_samples_used_to_compute_moments

      meta_group :

      instrument_parameters

      [483 values with dtype=int32]

    • r_calib_index
      (azimuth)
      int8
      ...

      standard_name :

      calibration_data_array_index_per_ray

      meta_group :

      radar_calibration

      comment :

      This is the index for the calibration which applies to this ray

      [483 values with dtype=int8]

    • measured_transmit_power_h
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [483 values with dtype=float32]

    • measured_transmit_power_v
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [483 values with dtype=float32]

    • scan_rate
      (azimuth)
      float32
      ...

      standard_name :

      antenna_angle_scan_rate

      units :

      degrees per second

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • DBZ
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

    • VR
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

  /sweep_2(22)

  • Dimensions:
    • sweep: 9
    • azimuth: 482
    • range: 996
  • Coordinates: (4)
    • azimuth
      (azimuth)
      float32
      0.0 0.75 1.5 ... 357.8 358.5 359.2

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],shape=(482,), dtype=float32)

    • elevation
      (azimuth)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [482 values with dtype=float32]

    • time
      (azimuth)
      datetime64[ns]
      ...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      [482 values with dtype=datetime64[ns]]

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (18)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      ...

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      [1 values with dtype=<U20]

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • pulse_width
      (azimuth)
      float32
      ...

      standard_name :

      transmitter_pulse_width

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • prt
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • prt_ratio
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency_ratio

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • nyquist_velocity
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_doppler_velocity

      units :

      meters per second

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • unambiguous_range
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_range

      units :

      meters

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • antenna_transition
      (azimuth)
      int8
      ...

      standard_name :

      antenna_is_in_transition_between_sweeps

      comment :

      1 if antenna is in transition, 0 otherwise

      [482 values with dtype=int8]

    • n_samples
      (azimuth)
      int32
      ...

      standard_name :

      number_of_samples_used_to_compute_moments

      meta_group :

      instrument_parameters

      [482 values with dtype=int32]

    • r_calib_index
      (azimuth)
      int8
      ...

      standard_name :

      calibration_data_array_index_per_ray

      meta_group :

      radar_calibration

      comment :

      This is the index for the calibration which applies to this ray

      [482 values with dtype=int8]

    • measured_transmit_power_h
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [482 values with dtype=float32]

    • measured_transmit_power_v
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [482 values with dtype=float32]

    • scan_rate
      (azimuth)
      float32
      ...

      standard_name :

      antenna_angle_scan_rate

      units :

      degrees per second

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • DBZ
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

    • VR
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

  /sweep_3(22)

  • Dimensions:
    • sweep: 9
    • azimuth: 483
    • range: 996
  • Coordinates: (4)
    • azimuth
      (azimuth)
      float32
      0.0 0.75 1.5 ... 357.8 358.5 359.2

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],shape=(483,), dtype=float32)

    • elevation
      (azimuth)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [483 values with dtype=float32]

    • time
      (azimuth)
      datetime64[ns]
      ...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      [483 values with dtype=datetime64[ns]]

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (18)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      ...

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      [1 values with dtype=<U20]

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • pulse_width
      (azimuth)
      float32
      ...

      standard_name :

      transmitter_pulse_width

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • prt
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • prt_ratio
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency_ratio

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • nyquist_velocity
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_doppler_velocity

      units :

      meters per second

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • unambiguous_range
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_range

      units :

      meters

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • antenna_transition
      (azimuth)
      int8
      ...

      standard_name :

      antenna_is_in_transition_between_sweeps

      comment :

      1 if antenna is in transition, 0 otherwise

      [483 values with dtype=int8]

    • n_samples
      (azimuth)
      int32
      ...

      standard_name :

      number_of_samples_used_to_compute_moments

      meta_group :

      instrument_parameters

      [483 values with dtype=int32]

    • r_calib_index
      (azimuth)
      int8
      ...

      standard_name :

      calibration_data_array_index_per_ray

      meta_group :

      radar_calibration

      comment :

      This is the index for the calibration which applies to this ray

      [483 values with dtype=int8]

    • measured_transmit_power_h
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [483 values with dtype=float32]

    • measured_transmit_power_v
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [483 values with dtype=float32]

    • scan_rate
      (azimuth)
      float32
      ...

      standard_name :

      antenna_angle_scan_rate

      units :

      degrees per second

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • DBZ
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

    • VR
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

  /sweep_4(22)

  • Dimensions:
    • sweep: 9
    • azimuth: 481
    • range: 996
  • Coordinates: (4)
    • azimuth
      (azimuth)
      float32
      0.0 0.75 1.5 ... 357.8 358.5 359.2

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],shape=(481,), dtype=float32)

    • elevation
      (azimuth)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [481 values with dtype=float32]

    • time
      (azimuth)
      datetime64[ns]
      ...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      [481 values with dtype=datetime64[ns]]

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (18)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      ...

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      [1 values with dtype=<U20]

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • pulse_width
      (azimuth)
      float32
      ...

      standard_name :

      transmitter_pulse_width

      units :

      seconds

      meta_group :

      instrument_parameters

      [481 values with dtype=float32]

    • prt
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency

      units :

      seconds

      meta_group :

      instrument_parameters

      [481 values with dtype=float32]

    • prt_ratio
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency_ratio

      units :

      seconds

      meta_group :

      instrument_parameters

      [481 values with dtype=float32]

    • nyquist_velocity
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_doppler_velocity

      units :

      meters per second

      meta_group :

      instrument_parameters

      [481 values with dtype=float32]

    • unambiguous_range
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_range

      units :

      meters

      meta_group :

      instrument_parameters

      [481 values with dtype=float32]

    • antenna_transition
      (azimuth)
      int8
      ...

      standard_name :

      antenna_is_in_transition_between_sweeps

      comment :

      1 if antenna is in transition, 0 otherwise

      [481 values with dtype=int8]

    • n_samples
      (azimuth)
      int32
      ...

      standard_name :

      number_of_samples_used_to_compute_moments

      meta_group :

      instrument_parameters

      [481 values with dtype=int32]

    • r_calib_index
      (azimuth)
      int8
      ...

      standard_name :

      calibration_data_array_index_per_ray

      meta_group :

      radar_calibration

      comment :

      This is the index for the calibration which applies to this ray

      [481 values with dtype=int8]

    • measured_transmit_power_h
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [481 values with dtype=float32]

    • measured_transmit_power_v
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [481 values with dtype=float32]

    • scan_rate
      (azimuth)
      float32
      ...

      standard_name :

      antenna_angle_scan_rate

      units :

      degrees per second

      meta_group :

      instrument_parameters

      [481 values with dtype=float32]

    • DBZ
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [479076 values with dtype=float32]

    • VR
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [479076 values with dtype=float32]

  /sweep_5(22)

  • Dimensions:
    • sweep: 9
    • azimuth: 482
    • range: 996
  • Coordinates: (4)
    • azimuth
      (azimuth)
      float32
      0.0 0.75 1.5 ... 357.8 358.5 359.2

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],shape=(482,), dtype=float32)

    • elevation
      (azimuth)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [482 values with dtype=float32]

    • time
      (azimuth)
      datetime64[ns]
      ...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      [482 values with dtype=datetime64[ns]]

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (18)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      ...

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      [1 values with dtype=<U20]

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • pulse_width
      (azimuth)
      float32
      ...

      standard_name :

      transmitter_pulse_width

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • prt
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • prt_ratio
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency_ratio

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • nyquist_velocity
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_doppler_velocity

      units :

      meters per second

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • unambiguous_range
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_range

      units :

      meters

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • antenna_transition
      (azimuth)
      int8
      ...

      standard_name :

      antenna_is_in_transition_between_sweeps

      comment :

      1 if antenna is in transition, 0 otherwise

      [482 values with dtype=int8]

    • n_samples
      (azimuth)
      int32
      ...

      standard_name :

      number_of_samples_used_to_compute_moments

      meta_group :

      instrument_parameters

      [482 values with dtype=int32]

    • r_calib_index
      (azimuth)
      int8
      ...

      standard_name :

      calibration_data_array_index_per_ray

      meta_group :

      radar_calibration

      comment :

      This is the index for the calibration which applies to this ray

      [482 values with dtype=int8]

    • measured_transmit_power_h
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [482 values with dtype=float32]

    • measured_transmit_power_v
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [482 values with dtype=float32]

    • scan_rate
      (azimuth)
      float32
      ...

      standard_name :

      antenna_angle_scan_rate

      units :

      degrees per second

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • DBZ
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

    • VR
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

  /sweep_6(22)

  • Dimensions:
    • sweep: 9
    • azimuth: 482
    • range: 996
  • Coordinates: (4)
    • azimuth
      (azimuth)
      float32
      0.0 0.75 1.5 ... 357.8 358.5 359.2

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],shape=(482,), dtype=float32)

    • elevation
      (azimuth)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [482 values with dtype=float32]

    • time
      (azimuth)
      datetime64[ns]
      ...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      [482 values with dtype=datetime64[ns]]

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (18)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      ...

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      [1 values with dtype=<U20]

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • pulse_width
      (azimuth)
      float32
      ...

      standard_name :

      transmitter_pulse_width

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • prt
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • prt_ratio
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency_ratio

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • nyquist_velocity
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_doppler_velocity

      units :

      meters per second

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • unambiguous_range
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_range

      units :

      meters

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • antenna_transition
      (azimuth)
      int8
      ...

      standard_name :

      antenna_is_in_transition_between_sweeps

      comment :

      1 if antenna is in transition, 0 otherwise

      [482 values with dtype=int8]

    • n_samples
      (azimuth)
      int32
      ...

      standard_name :

      number_of_samples_used_to_compute_moments

      meta_group :

      instrument_parameters

      [482 values with dtype=int32]

    • r_calib_index
      (azimuth)
      int8
      ...

      standard_name :

      calibration_data_array_index_per_ray

      meta_group :

      radar_calibration

      comment :

      This is the index for the calibration which applies to this ray

      [482 values with dtype=int8]

    • measured_transmit_power_h
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [482 values with dtype=float32]

    • measured_transmit_power_v
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [482 values with dtype=float32]

    • scan_rate
      (azimuth)
      float32
      ...

      standard_name :

      antenna_angle_scan_rate

      units :

      degrees per second

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • DBZ
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

    • VR
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

  /sweep_7(22)

  • Too many items to display (display_max_html_elements exceeded)

  /sweep_8(22)

  • Too many items to display (display_max_html_elements exceeded)
• Dimensions:
  • sweep: 9
• Coordinates: (3)
  • latitude
    ()
    float64
    ...

    standard_name :

    latitude

    units :

    degrees_north

    [1 values with dtype=float64]

  • longitude
    ()
    float64
    ...

    standard_name :

    longitude

    units :

    degrees_east

    [1 values with dtype=float64]

  • altitude
    ()
    float64
    ...

    standard_name :

    altitude

    units :

    meters

    positive :

    up

    [1 values with dtype=float64]

• Data variables: (9)
  • volume_number
    ()
    int32
    ...

    standard_name :

    data_volume_index_number

    [1 values with dtype=int32]

  • platform_type
    ()
    |S32
    ...

    standard_name :

    platform_type

    options :

    fixed, vehicle, ship, aircraft_fore, aircraft_aft, aircraft_tail, aircraft_belly, aircraft_roof, aircraft_nose, satellite_orbit, satellite_geostat

    [1 values with dtype=|S32]

  • primary_axis
    ()
    |S32
    ...

    standard_name :

    primary_axis_of_rotation

    options :

    axis_z, axis_y, axis_x

    [1 values with dtype=|S32]

  • status_str
    ()
    |S1
    ...

    standard_name :

    status_xml

    [1 values with dtype=|S1]

  • instrument_type
    ()
    |S32
    ...

    standard_name :

    type_of_instrument

    options :

    radar, lidar

    meta_group :

    instrument_parameters

    [1 values with dtype=|S32]

  • time_coverage_start
    ()
    |S32
    ...

    standard_name :

    data_volume_start_time_utc

    comment :

    ray times are relative to start time in secs

    [1 values with dtype=|S32]

  • time_coverage_end
    ()
    |S32
    ...

    standard_name :

    data_volume_end_time_utc

    [1 values with dtype=|S32]

  • sweep_group_name
    (sweep)
    <U7
    ...

    [9 values with dtype=<U7]

  • sweep_fixed_angle
    (sweep)
    float32
    ...

    standard_name :

    beam_target_fixed_angle

    units :

    degrees

    [9 values with dtype=float32]

• Attributes: (13)

  Conventions :

  CF/Radial instrument_parameters radar_parameters radar_calibration geometry_correction

  version :

  1.2

  title :

  TIMREX

  institution :

  references :

  source :

  history :

  comment :

  instrument_name :

  SPOLRVP8

  site_name :

  scan_name :

  scan_id :

  0

  platform_is_mobile :

  false

for grp in dtree.groups:
    print(grp)
    xr.testing.assert_equal(dtree[grp].ds, dtree2[grp].ds)

/
/radar_parameters
/georeferencing_correction
/radar_calibration
/sweep_0
/sweep_1
/sweep_2
/sweep_3
/sweep_4
/sweep_5
/sweep_6
/sweep_7

/sweep_8

Roundtrip with xradar.io.to_cfradial2

dtree3 = xd.io.open_cfradial1_datatree(filename, optional_groups=True)

display(dtree3)

<xarray.DataTree>
Group: /
│   Dimensions:              (sweep: 9)
│   Coordinates:
│       latitude             float64 8B ...
│       longitude            float64 8B ...
│       altitude             float64 8B ...
│   Dimensions without coordinates: sweep
│   Data variables:
│       volume_number        int32 4B ...
│       platform_type        |S32 32B ...
│       primary_axis         |S32 32B ...
│       status_str           |S1 1B ...
│       instrument_type      |S32 32B ...
│       time_coverage_start  |S32 32B ...
│       time_coverage_end    |S32 32B ...
│       sweep_group_name     (sweep) <U7 252B 'sweep_0' 'sweep_1' ... 'sweep_8'
│       sweep_fixed_angle    (sweep) float32 36B ...
│   Attributes: (12/13)
│       Conventions:         CF/Radial instrument_parameters radar_parameters rad...
│       version:             1.2
│       title:               TIMREX
│       institution:         
│       references:          
│       source:              
│       ...                  ...
│       comment:             
│       instrument_name:     SPOLRVP8
│       site_name:           
│       scan_name:           
│       scan_id:             0
│       platform_is_mobile:  false
├── Group: /radar_parameters
│       Dimensions:                   ()
│       Data variables:
│           radar_beam_width_h        float32 4B ...
│           radar_receiver_bandwidth  float32 4B ...
│           radar_antenna_gain_v      float32 4B ...
│           radar_antenna_gain_h      float32 4B ...
│           radar_beam_width_v        float32 4B ...
├── Group: /georeferencing_correction
│       Dimensions:                            ()
│       Data variables: (12/16)
│           longitude_correction               float32 4B ...
│           rotation_correction                float32 4B ...
│           pitch_correction                   float32 4B ...
│           elevation_correction               float32 4B ...
│           northward_ground_speed_correction  float32 4B ...
│           latitude_correction                float32 4B ...
│           ...                                 ...
│           eastward_ground_speed_correction   float32 4B ...
│           roll_correction                    float32 4B ...
│           tilt_correction                    float32 4B ...
│           vertical_velocity_correction       float32 4B ...
│           drift_correction                   float32 4B ...
│           azimuth_correction                 float32 4B ...
├── Group: /radar_calibration
│       Dimensions:                   ()
│       Data variables: (12/45)
│           time                      |S32 32B ...
│           pulse_width               float32 4B ...
│           xmit_power_h              float32 4B ...
│           xmit_power_v              float32 4B ...
│           two_way_waveguide_loss_h  float32 4B ...
│           two_way_waveguide_loss_v  float32 4B ...
│           ...                        ...
│           test_power_h              float32 4B ...
│           test_power_v              float32 4B ...
│           receiver_slope_hc         float32 4B ...
│           receiver_slope_vc         float32 4B ...
│           receiver_slope_hx         float32 4B ...
│           receiver_slope_vx         float32 4B ...
├── Group: /sweep_0
│       Dimensions:                    (azimuth: 483, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB 2008-06-04T00:15:...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B 'azimuth_surveillance'
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 483B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
├── Group: /sweep_1
│       Dimensions:                    (azimuth: 483, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB 2008-06-04T00:16:...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B 'azimuth_surveillance'
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 483B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
├── Group: /sweep_2
│       Dimensions:                    (azimuth: 482, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB 2008-06-04T00:17:...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B 'azimuth_surveillance'
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 482B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
├── Group: /sweep_3
│       Dimensions:                    (azimuth: 483, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB 2008-06-04T00:17:...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B 'azimuth_surveillance'
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 483B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
├── Group: /sweep_4
│       Dimensions:                    (azimuth: 481, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB 2008-06-04T00:18:...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B 'azimuth_surveillance'
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 481B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
├── Group: /sweep_5
│       Dimensions:                    (azimuth: 482, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB 2008-06-04T00:19:...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B 'azimuth_surveillance'
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 482B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
├── Group: /sweep_6
│       Dimensions:                    (azimuth: 482, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB 2008-06-04T00:20:...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B 'azimuth_surveillance'
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 482B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
├── Group: /sweep_7
│       Dimensions:                    (azimuth: 484, range: 996)
│       Coordinates:
│         * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
│           elevation                  (azimuth) float32 2kB ...
│           time                       (azimuth) datetime64[ns] 4kB 2008-06-04T00:21:...
│         * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
│       Data variables: (12/18)
│           sweep_number               int32 4B ...
│           sweep_mode                 <U20 80B 'azimuth_surveillance'
│           prt_mode                   |S32 32B ...
│           follow_mode                |S32 32B ...
│           sweep_fixed_angle          float32 4B ...
│           pulse_width                (azimuth) float32 2kB ...
│           ...                         ...
│           r_calib_index              (azimuth) int8 484B ...
│           measured_transmit_power_h  (azimuth) float32 2kB ...
│           measured_transmit_power_v  (azimuth) float32 2kB ...
│           scan_rate                  (azimuth) float32 2kB ...
│           DBZ                        (azimuth, range) float32 2MB ...
│           VR                         (azimuth, range) float32 2MB ...
└── Group: /sweep_8
        Dimensions:                    (azimuth: 483, range: 996)
        Coordinates:
          * azimuth                    (azimuth) float32 2kB 0.0 0.75 ... 358.5 359.2
            elevation                  (azimuth) float32 2kB ...
            time                       (azimuth) datetime64[ns] 4kB 2008-06-04T00:21:...
          * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
        Data variables: (12/18)
            sweep_number               int32 4B ...
            sweep_mode                 <U20 80B 'azimuth_surveillance'
            prt_mode                   |S32 32B ...
            follow_mode                |S32 32B ...
            sweep_fixed_angle          float32 4B ...
            pulse_width                (azimuth) float32 2kB ...
            ...                         ...
            r_calib_index              (azimuth) int8 483B ...
            measured_transmit_power_h  (azimuth) float32 2kB ...
            measured_transmit_power_v  (azimuth) float32 2kB ...
            scan_rate                  (azimuth) float32 2kB ...
            DBZ                        (azimuth, range) float32 2MB ...
            VR                         (azimuth, range) float32 2MB ...

xarray.DataTree

• /radar_parameters(5)

  • Dimensions:
    • sweep: 9
  • Data variables: (5)
    • radar_beam_width_h
      ()
      float32
      ...

      standard_name :

      half_power_radar_beam_width_h_channel

      units :

      degrees

      meta_group :

      radar_parameters

      [1 values with dtype=float32]

    • radar_receiver_bandwidth
      ()
      float32
      ...

      standard_name :

      radar_receiver_bandwidth

      units :

      s-1

      meta_group :

      radar_parameters

      [1 values with dtype=float32]

    • radar_antenna_gain_v
      ()
      float32
      ...

      standard_name :

      nominal_radar_antenna_gain_v_channel

      units :

      dB

      meta_group :

      radar_parameters

      [1 values with dtype=float32]

    • radar_antenna_gain_h
      ()
      float32
      ...

      standard_name :

      nominal_radar_antenna_gain_h_channel

      units :

      dB

      meta_group :

      radar_parameters

      [1 values with dtype=float32]

    • radar_beam_width_v
      ()
      float32
      ...

      standard_name :

      half_power_radar_beam_width_v_channel

      units :

      degrees

      meta_group :

      radar_parameters

      [1 values with dtype=float32]

  /georeferencing_correction(16)

  • Dimensions:
    • sweep: 9
  • Data variables: (16)
    • longitude_correction
      ()
      float32
      ...

      standard_name :

      longitude_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • rotation_correction
      ()
      float32
      ...

      standard_name :

      beam_rotation_angle_relative_to_platform_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • pitch_correction
      ()
      float32
      ...

      standard_name :

      platform_pitch_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • elevation_correction
      ()
      float32
      ...

      standard_name :

      beam_elevation_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • northward_ground_speed_correction
      ()
      float32
      ...

      standard_name :

      platform_northward_velocity_correction

      units :

      meters per second

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • latitude_correction
      ()
      float32
      ...

      standard_name :

      latitude_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • pressure_altitude_correction
      ()
      float32
      ...

      standard_name :

      pressure_altitude_correction

      units :

      meters

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • radar_altitude_correction
      ()
      float32
      ...

      standard_name :

      altitude_correction

      units :

      meters

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • range_correction
      ()
      float32
      ...

      standard_name :

      range_to_center_of_measurement_volume_correction

      units :

      meters

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • heading_correction
      ()
      float32
      ...

      standard_name :

      platform_heading_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • eastward_ground_speed_correction
      ()
      float32
      ...

      standard_name :

      platform_eastward_velocity_correction

      units :

      meters per second

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • roll_correction
      ()
      float32
      ...

      standard_name :

      platform_roll_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • tilt_correction
      ()
      float32
      ...

      standard_name :

      beam_tilt_angle_relative_to_platform_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • vertical_velocity_correction
      ()
      float32
      ...

      standard_name :

      platform_vertical_velocity_correction

      units :

      meters per second

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • drift_correction
      ()
      float32
      ...

      standard_name :

      platform_drift_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • azimuth_correction
      ()
      float32
      ...

      standard_name :

      azimuth_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

  /radar_calibration(45)

  • Dimensions:
    • sweep: 9
  • Data variables: (45)
    • time
      ()
      |S32
      ...

      standard_name :

      radar_calibration_time_utc

      meta_group :

      radar_calibration

      [1 values with dtype=|S32]

    • pulse_width
      ()
      float32
      ...

      standard_name :

      radar_calibration_pulse_width

      units :

      seconds

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • xmit_power_h
      ()
      float32
      ...

      standard_name :

      calibrated_radar_xmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • xmit_power_v
      ()
      float32
      ...

      standard_name :

      calibrated_radar_xmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • two_way_waveguide_loss_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_two_way_waveguide_loss_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • two_way_waveguide_loss_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_two_way_waveguide_loss_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • two_way_radome_loss_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_two_way_radome_loss_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • two_way_radome_loss_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_two_way_radome_loss_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_mismatch_loss
      ()
      float32
      ...

      standard_name :

      radar_calibration_receiver_mismatch_loss

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • radar_constant_h
      ()
      float32
      ...

      standard_name :

      calibrated_radar_constant_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • radar_constant_v
      ()
      float32
      ...

      standard_name :

      calibrated_radar_constant_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • antenna_gain_h
      ()
      float32
      ...

      standard_name :

      calibrated_radar_antenna_gain_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • antenna_gain_v
      ()
      float32
      ...

      standard_name :

      calibrated_radar_antenna_gain_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_hc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_noise_h_co_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_vc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_noise_v_co_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_hx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_noise_h_cross_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_vx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_noise_v_cross_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_gain_hc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_gain_h_co_polar_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_gain_vc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_gain_v_co_polar_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_gain_hx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_gain_h_cross_polar_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_gain_vx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_gain_v_cross_polar_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • base_1km_hc
      ()
      float32
      ...

      standard_name :

      radar_reflectivity_at_1km_at_zero_snr_h_co_polar_channel

      units :

      dBZ

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • base_1km_vc
      ()
      float32
      ...

      standard_name :

      radar_reflectivity_at_1km_at_zero_snr_v_co_polar_channel

      units :

      dBZ

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • base_1km_hx
      ()
      float32
      ...

      standard_name :

      radar_reflectivity_at_1km_at_zero_snr_h_cross_polar_channel

      units :

      dBZ

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • base_1km_vx
      ()
      float32
      ...

      standard_name :

      radar_reflectivity_at_1km_at_zero_snr_v_cross_polar_channel

      units :

      dBZ

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • sun_power_hc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_sun_power_h_co_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • sun_power_vc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_sun_power_v_co_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • sun_power_hx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_sun_power_h_cross_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • sun_power_vx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_sun_power_v_cross_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_source_power_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_noise_source_power_h_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_source_power_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_noise_source_power_v_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • power_measure_loss_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_power_measurement_loss_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • power_measure_loss_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_power_measurement_loss_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • coupler_forward_loss_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_coupler_forward_loss_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • coupler_forward_loss_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_coupler_forward_loss_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • zdr_correction
      ()
      float32
      ...

      standard_name :

      calibrated_radar_zdr_correction

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • ldr_correction_h
      ()
      float32
      ...

      standard_name :

      calibrated_radar_ldr_correction_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • ldr_correction_v
      ()
      float32
      ...

      standard_name :

      calibrated_radar_ldr_correction_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • system_phidp
      ()
      float32
      ...

      standard_name :

      calibrated_radar_system_phidp

      units :

      degrees

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • test_power_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_test_power_h_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • test_power_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_test_power_v_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_slope_hc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_slope_h_co_polar_channel

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_slope_vc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_slope_v_co_polar_channel

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_slope_hx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_slope_h_cross_polar_channel

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_slope_vx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_slope_v_cross_polar_channel

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

  /sweep_0(22)

  • Dimensions:
    • sweep: 9
    • azimuth: 483
    • range: 996
  • Coordinates: (4)
    • azimuth
      (azimuth)
      float32
      0.0 0.75 1.5 ... 357.8 358.5 359.2

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],shape=(483,), dtype=float32)

    • elevation
      (azimuth)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [483 values with dtype=float32]

    • time
      (azimuth)
      datetime64[ns]
      2008-06-04T00:15:34 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:15:34.000000000', '2008-06-04T00:15:34.000000000','2008-06-04T00:15:34.000000000', ..., '2008-06-04T00:15:33.000000000','2008-06-04T00:15:33.000000000', '2008-06-04T00:15:34.000000000'],shape=(483,), dtype='datetime64[ns]')

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (18)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      'azimuth_surveillance'

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      array('azimuth_surveillance', dtype='<U20')

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • pulse_width
      (azimuth)
      float32
      ...

      standard_name :

      transmitter_pulse_width

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • prt
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • prt_ratio
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency_ratio

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • nyquist_velocity
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_doppler_velocity

      units :

      meters per second

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • unambiguous_range
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_range

      units :

      meters

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • antenna_transition
      (azimuth)
      int8
      ...

      standard_name :

      antenna_is_in_transition_between_sweeps

      comment :

      1 if antenna is in transition, 0 otherwise

      [483 values with dtype=int8]

    • n_samples
      (azimuth)
      int32
      ...

      standard_name :

      number_of_samples_used_to_compute_moments

      meta_group :

      instrument_parameters

      [483 values with dtype=int32]

    • r_calib_index
      (azimuth)
      int8
      ...

      standard_name :

      calibration_data_array_index_per_ray

      meta_group :

      radar_calibration

      comment :

      This is the index for the calibration which applies to this ray

      [483 values with dtype=int8]

    • measured_transmit_power_h
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [483 values with dtype=float32]

    • measured_transmit_power_v
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [483 values with dtype=float32]

    • scan_rate
      (azimuth)
      float32
      ...

      standard_name :

      antenna_angle_scan_rate

      units :

      degrees per second

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • DBZ
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

    • VR
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

  /sweep_1(22)

  • Dimensions:
    • sweep: 9
    • azimuth: 483
    • range: 996
  • Coordinates: (4)
    • azimuth
      (azimuth)
      float32
      0.0 0.75 1.5 ... 357.8 358.5 359.2

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],shape=(483,), dtype=float32)

    • elevation
      (azimuth)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [483 values with dtype=float32]

    • time
      (azimuth)
      datetime64[ns]
      2008-06-04T00:16:21 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:16:21.000000000', '2008-06-04T00:16:21.000000000','2008-06-04T00:16:21.000000000', ..., '2008-06-04T00:16:20.000000000','2008-06-04T00:16:20.000000000', '2008-06-04T00:16:20.000000000'],shape=(483,), dtype='datetime64[ns]')

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (18)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      'azimuth_surveillance'

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      array('azimuth_surveillance', dtype='<U20')

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • pulse_width
      (azimuth)
      float32
      ...

      standard_name :

      transmitter_pulse_width

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • prt
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • prt_ratio
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency_ratio

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • nyquist_velocity
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_doppler_velocity

      units :

      meters per second

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • unambiguous_range
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_range

      units :

      meters

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • antenna_transition
      (azimuth)
      int8
      ...

      standard_name :

      antenna_is_in_transition_between_sweeps

      comment :

      1 if antenna is in transition, 0 otherwise

      [483 values with dtype=int8]

    • n_samples
      (azimuth)
      int32
      ...

      standard_name :

      number_of_samples_used_to_compute_moments

      meta_group :

      instrument_parameters

      [483 values with dtype=int32]

    • r_calib_index
      (azimuth)
      int8
      ...

      standard_name :

      calibration_data_array_index_per_ray

      meta_group :

      radar_calibration

      comment :

      This is the index for the calibration which applies to this ray

      [483 values with dtype=int8]

    • measured_transmit_power_h
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [483 values with dtype=float32]

    • measured_transmit_power_v
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [483 values with dtype=float32]

    • scan_rate
      (azimuth)
      float32
      ...

      standard_name :

      antenna_angle_scan_rate

      units :

      degrees per second

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • DBZ
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

    • VR
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

  /sweep_2(22)

  • Dimensions:
    • sweep: 9
    • azimuth: 482
    • range: 996
  • Coordinates: (4)
    • azimuth
      (azimuth)
      float32
      0.0 0.75 1.5 ... 357.8 358.5 359.2

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],shape=(482,), dtype=float32)

    • elevation
      (azimuth)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [482 values with dtype=float32]

    • time
      (azimuth)
      datetime64[ns]
      2008-06-04T00:17:07 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:17:07.000000000', '2008-06-04T00:17:08.000000000','2008-06-04T00:17:08.000000000', ..., '2008-06-04T00:17:07.000000000','2008-06-04T00:17:07.000000000', '2008-06-04T00:17:07.000000000'],shape=(482,), dtype='datetime64[ns]')

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (18)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      'azimuth_surveillance'

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      array('azimuth_surveillance', dtype='<U20')

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • pulse_width
      (azimuth)
      float32
      ...

      standard_name :

      transmitter_pulse_width

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • prt
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • prt_ratio
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency_ratio

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • nyquist_velocity
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_doppler_velocity

      units :

      meters per second

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • unambiguous_range
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_range

      units :

      meters

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • antenna_transition
      (azimuth)
      int8
      ...

      standard_name :

      antenna_is_in_transition_between_sweeps

      comment :

      1 if antenna is in transition, 0 otherwise

      [482 values with dtype=int8]

    • n_samples
      (azimuth)
      int32
      ...

      standard_name :

      number_of_samples_used_to_compute_moments

      meta_group :

      instrument_parameters

      [482 values with dtype=int32]

    • r_calib_index
      (azimuth)
      int8
      ...

      standard_name :

      calibration_data_array_index_per_ray

      meta_group :

      radar_calibration

      comment :

      This is the index for the calibration which applies to this ray

      [482 values with dtype=int8]

    • measured_transmit_power_h
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [482 values with dtype=float32]

    • measured_transmit_power_v
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [482 values with dtype=float32]

    • scan_rate
      (azimuth)
      float32
      ...

      standard_name :

      antenna_angle_scan_rate

      units :

      degrees per second

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • DBZ
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

    • VR
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

  /sweep_3(22)

  • Dimensions:
    • sweep: 9
    • azimuth: 483
    • range: 996
  • Coordinates: (4)
    • azimuth
      (azimuth)
      float32
      0.0 0.75 1.5 ... 357.8 358.5 359.2

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],shape=(483,), dtype=float32)

    • elevation
      (azimuth)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [483 values with dtype=float32]

    • time
      (azimuth)
      datetime64[ns]
      2008-06-04T00:17:54 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:17:54.000000000', '2008-06-04T00:17:54.000000000','2008-06-04T00:17:55.000000000', ..., '2008-06-04T00:17:54.000000000','2008-06-04T00:17:54.000000000', '2008-06-04T00:17:54.000000000'],shape=(483,), dtype='datetime64[ns]')

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (18)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      'azimuth_surveillance'

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      array('azimuth_surveillance', dtype='<U20')

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • pulse_width
      (azimuth)
      float32
      ...

      standard_name :

      transmitter_pulse_width

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • prt
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • prt_ratio
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency_ratio

      units :

      seconds

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • nyquist_velocity
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_doppler_velocity

      units :

      meters per second

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • unambiguous_range
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_range

      units :

      meters

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • antenna_transition
      (azimuth)
      int8
      ...

      standard_name :

      antenna_is_in_transition_between_sweeps

      comment :

      1 if antenna is in transition, 0 otherwise

      [483 values with dtype=int8]

    • n_samples
      (azimuth)
      int32
      ...

      standard_name :

      number_of_samples_used_to_compute_moments

      meta_group :

      instrument_parameters

      [483 values with dtype=int32]

    • r_calib_index
      (azimuth)
      int8
      ...

      standard_name :

      calibration_data_array_index_per_ray

      meta_group :

      radar_calibration

      comment :

      This is the index for the calibration which applies to this ray

      [483 values with dtype=int8]

    • measured_transmit_power_h
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [483 values with dtype=float32]

    • measured_transmit_power_v
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [483 values with dtype=float32]

    • scan_rate
      (azimuth)
      float32
      ...

      standard_name :

      antenna_angle_scan_rate

      units :

      degrees per second

      meta_group :

      instrument_parameters

      [483 values with dtype=float32]

    • DBZ
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

    • VR
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

  /sweep_4(22)

  • Dimensions:
    • sweep: 9
    • azimuth: 481
    • range: 996
  • Coordinates: (4)
    • azimuth
      (azimuth)
      float32
      0.0 0.75 1.5 ... 357.8 358.5 359.2

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],shape=(481,), dtype=float32)

    • elevation
      (azimuth)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [481 values with dtype=float32]

    • time
      (azimuth)
      datetime64[ns]
      2008-06-04T00:18:41 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:18:41.000000000', '2008-06-04T00:18:41.000000000','2008-06-04T00:18:41.000000000', ..., '2008-06-04T00:18:41.000000000','2008-06-04T00:18:41.000000000', '2008-06-04T00:18:41.000000000'],shape=(481,), dtype='datetime64[ns]')

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (18)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      'azimuth_surveillance'

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      array('azimuth_surveillance', dtype='<U20')

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • pulse_width
      (azimuth)
      float32
      ...

      standard_name :

      transmitter_pulse_width

      units :

      seconds

      meta_group :

      instrument_parameters

      [481 values with dtype=float32]

    • prt
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency

      units :

      seconds

      meta_group :

      instrument_parameters

      [481 values with dtype=float32]

    • prt_ratio
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency_ratio

      units :

      seconds

      meta_group :

      instrument_parameters

      [481 values with dtype=float32]

    • nyquist_velocity
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_doppler_velocity

      units :

      meters per second

      meta_group :

      instrument_parameters

      [481 values with dtype=float32]

    • unambiguous_range
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_range

      units :

      meters

      meta_group :

      instrument_parameters

      [481 values with dtype=float32]

    • antenna_transition
      (azimuth)
      int8
      ...

      standard_name :

      antenna_is_in_transition_between_sweeps

      comment :

      1 if antenna is in transition, 0 otherwise

      [481 values with dtype=int8]

    • n_samples
      (azimuth)
      int32
      ...

      standard_name :

      number_of_samples_used_to_compute_moments

      meta_group :

      instrument_parameters

      [481 values with dtype=int32]

    • r_calib_index
      (azimuth)
      int8
      ...

      standard_name :

      calibration_data_array_index_per_ray

      meta_group :

      radar_calibration

      comment :

      This is the index for the calibration which applies to this ray

      [481 values with dtype=int8]

    • measured_transmit_power_h
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [481 values with dtype=float32]

    • measured_transmit_power_v
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [481 values with dtype=float32]

    • scan_rate
      (azimuth)
      float32
      ...

      standard_name :

      antenna_angle_scan_rate

      units :

      degrees per second

      meta_group :

      instrument_parameters

      [481 values with dtype=float32]

    • DBZ
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [479076 values with dtype=float32]

    • VR
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [479076 values with dtype=float32]

  /sweep_5(22)

  • Dimensions:
    • sweep: 9
    • azimuth: 482
    • range: 996
  • Coordinates: (4)
    • azimuth
      (azimuth)
      float32
      0.0 0.75 1.5 ... 357.8 358.5 359.2

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],shape=(482,), dtype=float32)

    • elevation
      (azimuth)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [482 values with dtype=float32]

    • time
      (azimuth)
      datetime64[ns]
      2008-06-04T00:19:28 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:19:28.000000000', '2008-06-04T00:19:28.000000000','2008-06-04T00:19:28.000000000', ..., '2008-06-04T00:19:28.000000000','2008-06-04T00:19:28.000000000', '2008-06-04T00:19:28.000000000'],shape=(482,), dtype='datetime64[ns]')

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (18)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      'azimuth_surveillance'

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      array('azimuth_surveillance', dtype='<U20')

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • pulse_width
      (azimuth)
      float32
      ...

      standard_name :

      transmitter_pulse_width

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • prt
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • prt_ratio
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency_ratio

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • nyquist_velocity
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_doppler_velocity

      units :

      meters per second

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • unambiguous_range
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_range

      units :

      meters

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • antenna_transition
      (azimuth)
      int8
      ...

      standard_name :

      antenna_is_in_transition_between_sweeps

      comment :

      1 if antenna is in transition, 0 otherwise

      [482 values with dtype=int8]

    • n_samples
      (azimuth)
      int32
      ...

      standard_name :

      number_of_samples_used_to_compute_moments

      meta_group :

      instrument_parameters

      [482 values with dtype=int32]

    • r_calib_index
      (azimuth)
      int8
      ...

      standard_name :

      calibration_data_array_index_per_ray

      meta_group :

      radar_calibration

      comment :

      This is the index for the calibration which applies to this ray

      [482 values with dtype=int8]

    • measured_transmit_power_h
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [482 values with dtype=float32]

    • measured_transmit_power_v
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [482 values with dtype=float32]

    • scan_rate
      (azimuth)
      float32
      ...

      standard_name :

      antenna_angle_scan_rate

      units :

      degrees per second

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • DBZ
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

    • VR
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

  /sweep_6(22)

  • Dimensions:
    • sweep: 9
    • azimuth: 482
    • range: 996
  • Coordinates: (4)
    • azimuth
      (azimuth)
      float32
      0.0 0.75 1.5 ... 357.8 358.5 359.2

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      array([  0.  ,   0.75,   1.5 , ..., 357.75, 358.5 , 359.25],shape=(482,), dtype=float32)

    • elevation
      (azimuth)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [482 values with dtype=float32]

    • time
      (azimuth)
      datetime64[ns]
      2008-06-04T00:20:15 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:20:15.000000000', '2008-06-04T00:20:15.000000000','2008-06-04T00:20:15.000000000', ..., '2008-06-04T00:20:15.000000000','2008-06-04T00:20:15.000000000', '2008-06-04T00:20:15.000000000'],shape=(482,), dtype='datetime64[ns]')

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (18)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      'azimuth_surveillance'

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      array('azimuth_surveillance', dtype='<U20')

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • pulse_width
      (azimuth)
      float32
      ...

      standard_name :

      transmitter_pulse_width

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • prt
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • prt_ratio
      (azimuth)
      float32
      ...

      standard_name :

      pulse_repetition_frequency_ratio

      units :

      seconds

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • nyquist_velocity
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_doppler_velocity

      units :

      meters per second

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • unambiguous_range
      (azimuth)
      float32
      ...

      standard_name :

      unambiguous_range

      units :

      meters

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • antenna_transition
      (azimuth)
      int8
      ...

      standard_name :

      antenna_is_in_transition_between_sweeps

      comment :

      1 if antenna is in transition, 0 otherwise

      [482 values with dtype=int8]

    • n_samples
      (azimuth)
      int32
      ...

      standard_name :

      number_of_samples_used_to_compute_moments

      meta_group :

      instrument_parameters

      [482 values with dtype=int32]

    • r_calib_index
      (azimuth)
      int8
      ...

      standard_name :

      calibration_data_array_index_per_ray

      meta_group :

      radar_calibration

      comment :

      This is the index for the calibration which applies to this ray

      [482 values with dtype=int8]

    • measured_transmit_power_h
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [482 values with dtype=float32]

    • measured_transmit_power_v
      (azimuth)
      float32
      ...

      standard_name :

      measured_radar_transmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_parameters

      [482 values with dtype=float32]

    • scan_rate
      (azimuth)
      float32
      ...

      standard_name :

      antenna_angle_scan_rate

      units :

      degrees per second

      meta_group :

      instrument_parameters

      [482 values with dtype=float32]

    • DBZ
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

    • VR
      (azimuth, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

  /sweep_7(22)

  • Too many items to display (display_max_html_elements exceeded)

  /sweep_8(22)

  • Too many items to display (display_max_html_elements exceeded)
• Dimensions:
  • sweep: 9
• Coordinates: (3)
  • latitude
    ()
    float64
    ...

    standard_name :

    latitude

    units :

    degrees_north

    [1 values with dtype=float64]

  • longitude
    ()
    float64
    ...

    standard_name :

    longitude

    units :

    degrees_east

    [1 values with dtype=float64]

  • altitude
    ()
    float64
    ...

    standard_name :

    altitude

    units :

    meters

    positive :

    up

    [1 values with dtype=float64]

• Data variables: (9)
  • volume_number
    ()
    int32
    ...

    standard_name :

    data_volume_index_number

    [1 values with dtype=int32]

  • platform_type
    ()
    |S32
    ...

    standard_name :

    platform_type

    options :

    fixed, vehicle, ship, aircraft_fore, aircraft_aft, aircraft_tail, aircraft_belly, aircraft_roof, aircraft_nose, satellite_orbit, satellite_geostat

    [1 values with dtype=|S32]

  • primary_axis
    ()
    |S32
    ...

    standard_name :

    primary_axis_of_rotation

    options :

    axis_z, axis_y, axis_x

    [1 values with dtype=|S32]

  • status_str
    ()
    |S1
    ...

    standard_name :

    status_xml

    [1 values with dtype=|S1]

  • instrument_type
    ()
    |S32
    ...

    standard_name :

    type_of_instrument

    options :

    radar, lidar

    meta_group :

    instrument_parameters

    [1 values with dtype=|S32]

  • time_coverage_start
    ()
    |S32
    ...

    standard_name :

    data_volume_start_time_utc

    comment :

    ray times are relative to start time in secs

    [1 values with dtype=|S32]

  • time_coverage_end
    ()
    |S32
    ...

    standard_name :

    data_volume_end_time_utc

    [1 values with dtype=|S32]

  • sweep_group_name
    (sweep)
    <U7
    'sweep_0' 'sweep_1' ... 'sweep_8'

    array(['sweep_0', 'sweep_1', 'sweep_2', 'sweep_3', 'sweep_4', 'sweep_5',
           'sweep_6', 'sweep_7', 'sweep_8'], dtype='<U7')

  • sweep_fixed_angle
    (sweep)
    float32
    ...

    standard_name :

    beam_target_fixed_angle

    units :

    degrees

    [9 values with dtype=float32]

• Attributes: (13)

  Conventions :

  CF/Radial instrument_parameters radar_parameters radar_calibration geometry_correction

  version :

  1.2

  title :

  TIMREX

  institution :

  references :

  source :

  history :

  comment :

  instrument_name :

  SPOLRVP8

  site_name :

  scan_name :

  scan_id :

  0

  platform_is_mobile :

  false

outfile = "test_cfradial2.nc"
if os.path.exists(outfile):
    os.unlink(outfile)
xd.io.to_cfradial2(dtree3, outfile)

dtree4 = xr.open_datatree("test_cfradial2.nc", decode_timedelta=False)
with xr.set_options(display_expand_data_vars=True, display_expand_attrs=True):
    display(dtree4)

<xarray.DataTree>
Group: /
│   Dimensions:              (sweep: 9)
│   Coordinates:
│       latitude             float64 8B ...
│       longitude            float64 8B ...
│       altitude             float64 8B ...
│   Dimensions without coordinates: sweep
│   Data variables:
│       volume_number        int32 4B ...
│       platform_type        |S32 32B ...
│       primary_axis         |S32 32B ...
│       status_str           |S1 1B ...
│       instrument_type      |S32 32B ...
│       time_coverage_start  |S32 32B ...
│       time_coverage_end    |S32 32B ...
│       sweep_group_name     (sweep) <U7 252B ...
│       sweep_fixed_angle    (sweep) float32 36B ...
│   Attributes: (12/13)
│       Conventions:         CF/Radial instrument_parameters radar_parameters rad...
│       version:             1.2
│       title:               TIMREX
│       institution:         
│       references:          
│       source:              
│       ...                  ...
│       comment:             
│       instrument_name:     SPOLRVP8
│       site_name:           
│       scan_name:           
│       scan_id:             0
│       platform_is_mobile:  false
├── Group: /radar_parameters
│       Dimensions:                   ()
│       Data variables:
│           radar_beam_width_h        float32 4B ...
│           radar_receiver_bandwidth  float32 4B ...
│           radar_antenna_gain_v      float32 4B ...
│           radar_antenna_gain_h      float32 4B ...
│           radar_beam_width_v        float32 4B ...
├── Group: /georeferencing_correction
│       Dimensions:                            ()
│       Data variables: (12/16)
│           longitude_correction               float32 4B ...
│           rotation_correction                float32 4B ...
│           pitch_correction                   float32 4B ...
│           elevation_correction               float32 4B ...
│           northward_ground_speed_correction  float32 4B ...
│           latitude_correction                float32 4B ...
│           ...                                 ...
│           eastward_ground_speed_correction   float32 4B ...
│           roll_correction                    float32 4B ...
│           tilt_correction                    float32 4B ...
│           vertical_velocity_correction       float32 4B ...
│           drift_correction                   float32 4B ...
│           azimuth_correction                 float32 4B ...
├── Group: /radar_calibration
│       Dimensions:                   ()
│       Data variables: (12/45)
│           time                      |S32 32B ...
│           pulse_width               float32 4B ...
│           xmit_power_h              float32 4B ...
│           xmit_power_v              float32 4B ...
│           two_way_waveguide_loss_h  float32 4B ...
│           two_way_waveguide_loss_v  float32 4B ...
│           ...                        ...
│           test_power_h              float32 4B ...
│           test_power_v              float32 4B ...
│           receiver_slope_hc         float32 4B ...
│           receiver_slope_vc         float32 4B ...
│           receiver_slope_hx         float32 4B ...
│           receiver_slope_vx         float32 4B ...
├── Group: /sweep_0
│       Dimensions:            (time: 483, range: 996)
│       Coordinates:
│         * time               (time) datetime64[ns] 4kB 2008-06-04T00:15:03 ... 2008...
│           azimuth            (time) float32 2kB ...
│           elevation          (time) float32 2kB ...
│         * range              (range) float32 4kB 150.0 300.0 ... 1.492e+05 1.494e+05
│       Data variables:
│           sweep_number       int32 4B ...
│           sweep_mode         <U20 80B ...
│           prt_mode           |S32 32B ...
│           follow_mode        |S32 32B ...
│           sweep_fixed_angle  float32 4B ...
│           DBZ                (time, range) float32 2MB ...
│           VR                 (time, range) float32 2MB ...
├── Group: /sweep_1
│       Dimensions:            (time: 483, range: 996)
│       Coordinates:
│         * time               (time) datetime64[ns] 4kB 2008-06-04T00:15:50 ... 2008...
│           azimuth            (time) float32 2kB ...
│           elevation          (time) float32 2kB ...
│         * range              (range) float32 4kB 150.0 300.0 ... 1.492e+05 1.494e+05
│       Data variables:
│           sweep_number       int32 4B ...
│           sweep_mode         <U20 80B ...
│           prt_mode           |S32 32B ...
│           follow_mode        |S32 32B ...
│           sweep_fixed_angle  float32 4B ...
│           DBZ                (time, range) float32 2MB ...
│           VR                 (time, range) float32 2MB ...
├── Group: /sweep_2
│       Dimensions:            (time: 482, range: 996)
│       Coordinates:
│         * time               (time) datetime64[ns] 4kB 2008-06-04T00:16:40 ... 2008...
│           azimuth            (time) float32 2kB ...
│           elevation          (time) float32 2kB ...
│         * range              (range) float32 4kB 150.0 300.0 ... 1.492e+05 1.494e+05
│       Data variables:
│           sweep_number       int32 4B ...
│           sweep_mode         <U20 80B ...
│           prt_mode           |S32 32B ...
│           follow_mode        |S32 32B ...
│           sweep_fixed_angle  float32 4B ...
│           DBZ                (time, range) float32 2MB ...
│           VR                 (time, range) float32 2MB ...
├── Group: /sweep_3
│       Dimensions:            (time: 483, range: 996)
│       Coordinates:
│         * time               (time) datetime64[ns] 4kB 2008-06-04T00:17:27 ... 2008...
│           azimuth            (time) float32 2kB ...
│           elevation          (time) float32 2kB ...
│         * range              (range) float32 4kB 150.0 300.0 ... 1.492e+05 1.494e+05
│       Data variables:
│           sweep_number       int32 4B ...
│           sweep_mode         <U20 80B ...
│           prt_mode           |S32 32B ...
│           follow_mode        |S32 32B ...
│           sweep_fixed_angle  float32 4B ...
│           DBZ                (time, range) float32 2MB ...
│           VR                 (time, range) float32 2MB ...
├── Group: /sweep_4
│       Dimensions:            (time: 481, range: 996)
│       Coordinates:
│         * time               (time) datetime64[ns] 4kB 2008-06-04T00:18:15 ... 2008...
│           azimuth            (time) float32 2kB ...
│           elevation          (time) float32 2kB ...
│         * range              (range) float32 4kB 150.0 300.0 ... 1.492e+05 1.494e+05
│       Data variables:
│           sweep_number       int32 4B ...
│           sweep_mode         <U20 80B ...
│           prt_mode           |S32 32B ...
│           follow_mode        |S32 32B ...
│           sweep_fixed_angle  float32 4B ...
│           DBZ                (time, range) float32 2MB ...
│           VR                 (time, range) float32 2MB ...
├── Group: /sweep_5
│       Dimensions:            (time: 482, range: 996)
│       Coordinates:
│         * time               (time) datetime64[ns] 4kB 2008-06-04T00:19:03 ... 2008...
│           azimuth            (time) float32 2kB ...
│           elevation          (time) float32 2kB ...
│         * range              (range) float32 4kB 150.0 300.0 ... 1.492e+05 1.494e+05
│       Data variables:
│           sweep_number       int32 4B ...
│           sweep_mode         <U20 80B ...
│           prt_mode           |S32 32B ...
│           follow_mode        |S32 32B ...
│           sweep_fixed_angle  float32 4B ...
│           DBZ                (time, range) float32 2MB ...
│           VR                 (time, range) float32 2MB ...
├── Group: /sweep_6
│       Dimensions:            (time: 482, range: 996)
│       Coordinates:
│         * time               (time) datetime64[ns] 4kB 2008-06-04T00:19:51 ... 2008...
│           azimuth            (time) float32 2kB ...
│           elevation          (time) float32 2kB ...
│         * range              (range) float32 4kB 150.0 300.0 ... 1.492e+05 1.494e+05
│       Data variables:
│           sweep_number       int32 4B ...
│           sweep_mode         <U20 80B ...
│           prt_mode           |S32 32B ...
│           follow_mode        |S32 32B ...
│           sweep_fixed_angle  float32 4B ...
│           DBZ                (time, range) float32 2MB ...
│           VR                 (time, range) float32 2MB ...
├── Group: /sweep_7
│       Dimensions:            (time: 484, range: 996)
│       Coordinates:
│         * time               (time) datetime64[ns] 4kB 2008-06-04T00:20:39 ... 2008...
│           azimuth            (time) float32 2kB ...
│           elevation          (time) float32 2kB ...
│         * range              (range) float32 4kB 150.0 300.0 ... 1.492e+05 1.494e+05
│       Data variables:
│           sweep_number       int32 4B ...
│           sweep_mode         <U20 80B ...
│           prt_mode           |S32 32B ...
│           follow_mode        |S32 32B ...
│           sweep_fixed_angle  float32 4B ...
│           DBZ                (time, range) float32 2MB ...
│           VR                 (time, range) float32 2MB ...
└── Group: /sweep_8
        Dimensions:            (time: 483, range: 996)
        Coordinates:
          * time               (time) datetime64[ns] 4kB 2008-06-04T00:21:28 ... 2008...
            azimuth            (time) float32 2kB ...
            elevation          (time) float32 2kB ...
          * range              (range) float32 4kB 150.0 300.0 ... 1.492e+05 1.494e+05
        Data variables:
            sweep_number       int32 4B ...
            sweep_mode         <U20 80B ...
            prt_mode           |S32 32B ...
            follow_mode        |S32 32B ...
            sweep_fixed_angle  float32 4B ...
            DBZ                (time, range) float32 2MB ...
            VR                 (time, range) float32 2MB ...

xarray.DataTree

• /radar_parameters(5)

  • Dimensions:
    • sweep: 9
  • Data variables: (5)
    • radar_beam_width_h
      ()
      float32
      ...

      standard_name :

      half_power_radar_beam_width_h_channel

      units :

      degrees

      meta_group :

      radar_parameters

      [1 values with dtype=float32]

    • radar_receiver_bandwidth
      ()
      float32
      ...

      standard_name :

      radar_receiver_bandwidth

      units :

      s-1

      meta_group :

      radar_parameters

      [1 values with dtype=float32]

    • radar_antenna_gain_v
      ()
      float32
      ...

      standard_name :

      nominal_radar_antenna_gain_v_channel

      units :

      dB

      meta_group :

      radar_parameters

      [1 values with dtype=float32]

    • radar_antenna_gain_h
      ()
      float32
      ...

      standard_name :

      nominal_radar_antenna_gain_h_channel

      units :

      dB

      meta_group :

      radar_parameters

      [1 values with dtype=float32]

    • radar_beam_width_v
      ()
      float32
      ...

      standard_name :

      half_power_radar_beam_width_v_channel

      units :

      degrees

      meta_group :

      radar_parameters

      [1 values with dtype=float32]

  /georeferencing_correction(16)

  • Dimensions:
    • sweep: 9
  • Data variables: (16)
    • longitude_correction
      ()
      float32
      ...

      standard_name :

      longitude_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • rotation_correction
      ()
      float32
      ...

      standard_name :

      beam_rotation_angle_relative_to_platform_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • pitch_correction
      ()
      float32
      ...

      standard_name :

      platform_pitch_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • elevation_correction
      ()
      float32
      ...

      standard_name :

      beam_elevation_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • northward_ground_speed_correction
      ()
      float32
      ...

      standard_name :

      platform_northward_velocity_correction

      units :

      meters per second

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • latitude_correction
      ()
      float32
      ...

      standard_name :

      latitude_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • pressure_altitude_correction
      ()
      float32
      ...

      standard_name :

      pressure_altitude_correction

      units :

      meters

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • radar_altitude_correction
      ()
      float32
      ...

      standard_name :

      altitude_correction

      units :

      meters

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • range_correction
      ()
      float32
      ...

      standard_name :

      range_to_center_of_measurement_volume_correction

      units :

      meters

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • heading_correction
      ()
      float32
      ...

      standard_name :

      platform_heading_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • eastward_ground_speed_correction
      ()
      float32
      ...

      standard_name :

      platform_eastward_velocity_correction

      units :

      meters per second

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • roll_correction
      ()
      float32
      ...

      standard_name :

      platform_roll_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • tilt_correction
      ()
      float32
      ...

      standard_name :

      beam_tilt_angle_relative_to_platform_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • vertical_velocity_correction
      ()
      float32
      ...

      standard_name :

      platform_vertical_velocity_correction

      units :

      meters per second

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • drift_correction
      ()
      float32
      ...

      standard_name :

      platform_drift_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

    • azimuth_correction
      ()
      float32
      ...

      standard_name :

      azimuth_angle_correction

      units :

      degrees

      meta_group :

      geometry_correction

      [1 values with dtype=float32]

  /radar_calibration(45)

  • Dimensions:
    • sweep: 9
  • Data variables: (45)
    • time
      ()
      |S32
      ...

      standard_name :

      radar_calibration_time_utc

      meta_group :

      radar_calibration

      [1 values with dtype=|S32]

    • pulse_width
      ()
      float32
      ...

      standard_name :

      radar_calibration_pulse_width

      units :

      seconds

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • xmit_power_h
      ()
      float32
      ...

      standard_name :

      calibrated_radar_xmit_power_h_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • xmit_power_v
      ()
      float32
      ...

      standard_name :

      calibrated_radar_xmit_power_v_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • two_way_waveguide_loss_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_two_way_waveguide_loss_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • two_way_waveguide_loss_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_two_way_waveguide_loss_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • two_way_radome_loss_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_two_way_radome_loss_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • two_way_radome_loss_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_two_way_radome_loss_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_mismatch_loss
      ()
      float32
      ...

      standard_name :

      radar_calibration_receiver_mismatch_loss

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • radar_constant_h
      ()
      float32
      ...

      standard_name :

      calibrated_radar_constant_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • radar_constant_v
      ()
      float32
      ...

      standard_name :

      calibrated_radar_constant_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • antenna_gain_h
      ()
      float32
      ...

      standard_name :

      calibrated_radar_antenna_gain_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • antenna_gain_v
      ()
      float32
      ...

      standard_name :

      calibrated_radar_antenna_gain_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_hc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_noise_h_co_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_vc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_noise_v_co_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_hx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_noise_h_cross_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_vx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_noise_v_cross_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_gain_hc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_gain_h_co_polar_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_gain_vc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_gain_v_co_polar_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_gain_hx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_gain_h_cross_polar_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_gain_vx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_gain_v_cross_polar_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • base_1km_hc
      ()
      float32
      ...

      standard_name :

      radar_reflectivity_at_1km_at_zero_snr_h_co_polar_channel

      units :

      dBZ

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • base_1km_vc
      ()
      float32
      ...

      standard_name :

      radar_reflectivity_at_1km_at_zero_snr_v_co_polar_channel

      units :

      dBZ

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • base_1km_hx
      ()
      float32
      ...

      standard_name :

      radar_reflectivity_at_1km_at_zero_snr_h_cross_polar_channel

      units :

      dBZ

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • base_1km_vx
      ()
      float32
      ...

      standard_name :

      radar_reflectivity_at_1km_at_zero_snr_v_cross_polar_channel

      units :

      dBZ

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • sun_power_hc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_sun_power_h_co_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • sun_power_vc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_sun_power_v_co_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • sun_power_hx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_sun_power_h_cross_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • sun_power_vx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_sun_power_v_cross_polar_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_source_power_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_noise_source_power_h_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • noise_source_power_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_noise_source_power_v_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • power_measure_loss_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_power_measurement_loss_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • power_measure_loss_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_power_measurement_loss_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • coupler_forward_loss_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_coupler_forward_loss_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • coupler_forward_loss_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_coupler_forward_loss_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • zdr_correction
      ()
      float32
      ...

      standard_name :

      calibrated_radar_zdr_correction

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • ldr_correction_h
      ()
      float32
      ...

      standard_name :

      calibrated_radar_ldr_correction_h_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • ldr_correction_v
      ()
      float32
      ...

      standard_name :

      calibrated_radar_ldr_correction_v_channel

      units :

      dB

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • system_phidp
      ()
      float32
      ...

      standard_name :

      calibrated_radar_system_phidp

      units :

      degrees

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • test_power_h
      ()
      float32
      ...

      standard_name :

      radar_calibration_test_power_h_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • test_power_v
      ()
      float32
      ...

      standard_name :

      radar_calibration_test_power_v_channel

      units :

      dBm

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_slope_hc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_slope_h_co_polar_channel

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_slope_vc
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_slope_v_co_polar_channel

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_slope_hx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_slope_h_cross_polar_channel

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

    • receiver_slope_vx
      ()
      float32
      ...

      standard_name :

      calibrated_radar_receiver_slope_v_cross_polar_channel

      meta_group :

      radar_calibration

      [1 values with dtype=float32]

  /sweep_0(11)

  • Dimensions:
    • sweep: 9
    • time: 483
    • range: 996
  • Coordinates: (4)
    • time
      (time)
      datetime64[ns]
      2008-06-04T00:15:03 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:15:03.000000000', '2008-06-04T00:15:03.000000000','2008-06-04T00:15:03.000000000', ..., '2008-06-04T00:15:50.000000000','2008-06-04T00:15:50.000000000', '2008-06-04T00:15:50.000000000'],shape=(483,), dtype='datetime64[ns]')

    • azimuth
      (time)
      float32
      ...

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      [483 values with dtype=float32]

    • elevation
      (time)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [483 values with dtype=float32]

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (7)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      ...

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      [1 values with dtype=<U20]

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • DBZ
      (time, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

    • VR
      (time, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

  /sweep_1(11)

  • Dimensions:
    • sweep: 9
    • time: 483
    • range: 996
  • Coordinates: (4)
    • time
      (time)
      datetime64[ns]
      2008-06-04T00:15:50 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:15:50.000000000', '2008-06-04T00:15:52.000000000','2008-06-04T00:15:53.000000000', ..., '2008-06-04T00:16:39.000000000','2008-06-04T00:16:39.000000000', '2008-06-04T00:16:39.000000000'],shape=(483,), dtype='datetime64[ns]')

    • azimuth
      (time)
      float32
      ...

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      [483 values with dtype=float32]

    • elevation
      (time)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [483 values with dtype=float32]

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (7)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      ...

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      [1 values with dtype=<U20]

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • DBZ
      (time, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

    • VR
      (time, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

  /sweep_2(11)

  • Dimensions:
    • sweep: 9
    • time: 482
    • range: 996
  • Coordinates: (4)
    • time
      (time)
      datetime64[ns]
      2008-06-04T00:16:40 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:16:40.000000000', '2008-06-04T00:16:40.000000000','2008-06-04T00:16:40.000000000', ..., '2008-06-04T00:17:27.000000000','2008-06-04T00:17:27.000000000', '2008-06-04T00:17:27.000000000'],shape=(482,), dtype='datetime64[ns]')

    • azimuth
      (time)
      float32
      ...

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      [482 values with dtype=float32]

    • elevation
      (time)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [482 values with dtype=float32]

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (7)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      ...

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      [1 values with dtype=<U20]

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • DBZ
      (time, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

    • VR
      (time, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

  /sweep_3(11)

  • Dimensions:
    • sweep: 9
    • time: 483
    • range: 996
  • Coordinates: (4)
    • time
      (time)
      datetime64[ns]
      2008-06-04T00:17:27 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:17:27.000000000', '2008-06-04T00:17:28.000000000','2008-06-04T00:17:28.000000000', ..., '2008-06-04T00:18:15.000000000','2008-06-04T00:18:15.000000000', '2008-06-04T00:18:15.000000000'],shape=(483,), dtype='datetime64[ns]')

    • azimuth
      (time)
      float32
      ...

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      [483 values with dtype=float32]

    • elevation
      (time)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [483 values with dtype=float32]

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (7)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      ...

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      [1 values with dtype=<U20]

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • DBZ
      (time, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

    • VR
      (time, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

  /sweep_4(11)

  • Dimensions:
    • sweep: 9
    • time: 481
    • range: 996
  • Coordinates: (4)
    • time
      (time)
      datetime64[ns]
      2008-06-04T00:18:15 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:18:15.000000000', '2008-06-04T00:18:16.000000000','2008-06-04T00:18:16.000000000', ..., '2008-06-04T00:19:03.000000000','2008-06-04T00:19:03.000000000', '2008-06-04T00:19:03.000000000'],shape=(481,), dtype='datetime64[ns]')

    • azimuth
      (time)
      float32
      ...

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      [481 values with dtype=float32]

    • elevation
      (time)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [481 values with dtype=float32]

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (7)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      ...

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      [1 values with dtype=<U20]

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • DBZ
      (time, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [479076 values with dtype=float32]

    • VR
      (time, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [479076 values with dtype=float32]

  /sweep_5(11)

  • Dimensions:
    • sweep: 9
    • time: 482
    • range: 996
  • Coordinates: (4)
    • time
      (time)
      datetime64[ns]
      2008-06-04T00:19:03 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:19:03.000000000', '2008-06-04T00:19:04.000000000','2008-06-04T00:19:04.000000000', ..., '2008-06-04T00:19:51.000000000','2008-06-04T00:19:51.000000000', '2008-06-04T00:19:51.000000000'],shape=(482,), dtype='datetime64[ns]')

    • azimuth
      (time)
      float32
      ...

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      [482 values with dtype=float32]

    • elevation
      (time)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [482 values with dtype=float32]

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (7)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      ...

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      [1 values with dtype=<U20]

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • DBZ
      (time, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

    • VR
      (time, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

  /sweep_6(11)

  • Dimensions:
    • sweep: 9
    • time: 482
    • range: 996
  • Coordinates: (4)
    • time
      (time)
      datetime64[ns]
      2008-06-04T00:19:51 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:19:51.000000000', '2008-06-04T00:19:52.000000000','2008-06-04T00:19:52.000000000', ..., '2008-06-04T00:20:39.000000000','2008-06-04T00:20:39.000000000', '2008-06-04T00:20:39.000000000'],shape=(482,), dtype='datetime64[ns]')

    • azimuth
      (time)
      float32
      ...

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      [482 values with dtype=float32]

    • elevation
      (time)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [482 values with dtype=float32]

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (7)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      ...

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      [1 values with dtype=<U20]

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • DBZ
      (time, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

    • VR
      (time, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [480072 values with dtype=float32]

  /sweep_7(11)

  • Dimensions:
    • sweep: 9
    • time: 484
    • range: 996
  • Coordinates: (4)
    • time
      (time)
      datetime64[ns]
      2008-06-04T00:20:39 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:20:39.000000000', '2008-06-04T00:20:41.000000000','2008-06-04T00:20:41.000000000', ..., '2008-06-04T00:21:28.000000000','2008-06-04T00:21:28.000000000', '2008-06-04T00:21:28.000000000'],shape=(484,), dtype='datetime64[ns]')

    • azimuth
      (time)
      float32
      ...

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      [484 values with dtype=float32]

    • elevation
      (time)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [484 values with dtype=float32]

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (7)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      ...

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      [1 values with dtype=<U20]

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • DBZ
      (time, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [482064 values with dtype=float32]

    • VR
      (time, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [482064 values with dtype=float32]

  /sweep_8(11)

  • Dimensions:
    • sweep: 9
    • time: 483
    • range: 996
  • Coordinates: (4)
    • time
      (time)
      datetime64[ns]
      2008-06-04T00:21:28 ... 2008-06-...

      standard_name :

      time

      long_name :

      time in seconds since volume start

      comment :

      times are relative to the volume start_time

      array(['2008-06-04T00:21:28.000000000', '2008-06-04T00:21:30.000000000','2008-06-04T00:21:30.000000000', ..., '2008-06-04T00:22:16.000000000','2008-06-04T00:22:17.000000000', '2008-06-04T00:22:17.000000000'],shape=(483,), dtype='datetime64[ns]')

    • azimuth
      (time)
      float32
      ...

      standard_name :

      beam_azimuth_angle

      units :

      degrees

      [483 values with dtype=float32]

    • elevation
      (time)
      float32
      ...

      standard_name :

      beam_elevation_angle

      units :

      degrees

      positive :

      up

      [483 values with dtype=float32]

    • range
      (range)
      float32
      150.0 300.0 ... 1.492e+05 1.494e+05

      standard_name :

      range_to_center_of_measurement_volume

      long_name :

      Range from instrument to center of gate

      units :

      meters

      spacing_is_constant :

      true

      meters_to_center_of_first_gate :

      150.00000596046448

      meters_between_gates :

      150.00000596046448

      array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,149250.     , 149400.     ], shape=(996,), dtype=float32)

  • Data variables: (7)
    • sweep_number
      ()
      int32
      ...

      standard_name :

      sweep_index_number_0_based

      [1 values with dtype=int32]

    • sweep_mode
      ()
      <U20
      ...

      standard_name :

      scan_mode_for_sweep

      options :

      sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

      [1 values with dtype=<U20]

    • prt_mode
      ()
      |S32
      ...

      standard_name :

      transmit_pulse_mode

      options :

      fixed, staggered, dual

      meta_group :

      radar_parameters

      [1 values with dtype=|S32]

    • follow_mode
      ()
      |S32
      ...

      standard_name :

      follow_mode_for_scan_strategy

      options :

      none, sun, vehicle, aircraft, target, manual

      meta_group :

      instrument_parameters

      [1 values with dtype=|S32]

    • sweep_fixed_angle
      ()
      float32
      ...

      standard_name :

      beam_target_fixed_angle

      units :

      degrees

      [1 values with dtype=float32]

    • DBZ
      (time, range)
      float32
      ...

      long_name :

      Computed Horizontal Co-polar Reflectivit

      standard_name :

      equivalent_reflectivity_factor

      units :

      dBZ

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

    • VR
      (time, range)
      float32
      ...

      long_name :

      Computed Velocity

      standard_name :

      radial_velocity_of_scatterers_away_from_instrument

      units :

      m/s

      threshold_field_name :

      threshold_value :

      -9999.0

      sampling_ratio :

      1.0

      grid_mapping :

      grid_mapping

      [481068 values with dtype=float32]

• Dimensions:
  • sweep: 9
• Coordinates: (3)
  • latitude
    ()
    float64
    ...

    standard_name :

    latitude

    units :

    degrees_north

    [1 values with dtype=float64]

  • longitude
    ()
    float64
    ...

    standard_name :

    longitude

    units :

    degrees_east

    [1 values with dtype=float64]

  • altitude
    ()
    float64
    ...

    standard_name :

    altitude

    units :

    meters

    positive :

    up

    [1 values with dtype=float64]

• Data variables: (9)
  • volume_number
    ()
    int32
    ...

    standard_name :

    data_volume_index_number

    [1 values with dtype=int32]

  • platform_type
    ()
    |S32
    ...

    standard_name :

    platform_type

    options :

    fixed, vehicle, ship, aircraft_fore, aircraft_aft, aircraft_tail, aircraft_belly, aircraft_roof, aircraft_nose, satellite_orbit, satellite_geostat

    [1 values with dtype=|S32]

  • primary_axis
    ()
    |S32
    ...

    standard_name :

    primary_axis_of_rotation

    options :

    axis_z, axis_y, axis_x

    [1 values with dtype=|S32]

  • status_str
    ()
    |S1
    ...

    standard_name :

    status_xml

    [1 values with dtype=|S1]

  • instrument_type
    ()
    |S32
    ...

    standard_name :

    type_of_instrument

    options :

    radar, lidar

    meta_group :

    instrument_parameters

    [1 values with dtype=|S32]

  • time_coverage_start
    ()
    |S32
    ...

    standard_name :

    data_volume_start_time_utc

    comment :

    ray times are relative to start time in secs

    [1 values with dtype=|S32]

  • time_coverage_end
    ()
    |S32
    ...

    standard_name :

    data_volume_end_time_utc

    [1 values with dtype=|S32]

  • sweep_group_name
    (sweep)
    <U7
    ...

    [9 values with dtype=<U7]

  • sweep_fixed_angle
    (sweep)
    float32
    ...

    standard_name :

    beam_target_fixed_angle

    units :

    degrees

    [9 values with dtype=float32]

• Attributes: (13)

  Conventions :

  CF/Radial instrument_parameters radar_parameters radar_calibration geometry_correction

  version :

  1.2

  title :

  TIMREX

  institution :

  references :

  source :

  history :

  comment :

  instrument_name :

  SPOLRVP8

  site_name :

  scan_name :

  scan_id :

  0

  platform_is_mobile :

  false

for grp in dtree3.groups:
    print(grp)
    xr.testing.assert_equal(dtree3[grp].ds, dtree4[grp].ds)

/
/radar_parameters
/georeferencing_correction
/radar_calibration
/sweep_0
/sweep_1
/sweep_2
/sweep_3
/sweep_4
/sweep_5
/sweep_6
/sweep_7

/sweep_8

Datasets

Using xarray.open_dataset and the cfradial1-backend we can easily load specific groups side-stepping the DataTree. Can be parameterized using kwargs.

ds = xr.open_dataset(filename, group="sweep_1", engine="cfradial1", first_dim="time")
with xr.set_options(display_expand_data_vars=True):
    display(ds.load())

<xarray.Dataset> Size: 4MB
Dimensions:                    (time: 483, range: 996)
Coordinates:
  * time                       (time) datetime64[ns] 4kB 2008-06-04T00:15:50 ...
    azimuth                    (time) float32 2kB 123.8 144.0 ... 144.0 144.8
    elevation                  (time) float32 2kB 0.5109 0.9998 ... 1.104 1.104
  * range                      (range) float32 4kB 150.0 300.0 ... 1.494e+05
    latitude                   float64 8B 22.53
    longitude                  float64 8B 120.4
    altitude                   float64 8B 45.0
Data variables: (12/18)
    sweep_number               int32 4B 1
    sweep_mode                 <U20 80B 'azimuth_surveillance'
    prt_mode                   |S32 32B b'not_set'
    follow_mode                |S32 32B b'not_set'
    sweep_fixed_angle          float32 4B 1.099
    pulse_width                (time) float32 2kB 0.0 0.0 0.0 ... 0.0 0.0 0.0
    ...                         ...
    r_calib_index              (time) int8 483B -1 -1 -1 -1 -1 ... -1 -1 -1 -1
    measured_transmit_power_h  (time) float32 2kB -9.999e+03 ... -9.999e+03
    measured_transmit_power_v  (time) float32 2kB -9.999e+03 ... -9.999e+03
    scan_rate                  (time) float32 2kB -3.277e+04 ... -3.277e+04
    DBZ                        (time, range) float32 2MB -5.8 12.8 ... -2.7 nan
    VR                         (time, range) float32 2MB 26.66 -4.53 ... nan

xarray.Dataset

• Dimensions:
  • time: 483
  • range: 996
• Coordinates: (7)
  • time
    (time)
    datetime64[ns]
    2008-06-04T00:15:50 ... 2008-06-...

    standard_name :

    time

    long_name :

    time in seconds since volume start

    comment :

    times are relative to the volume start_time

    array(['2008-06-04T00:15:50.000000000', '2008-06-04T00:15:52.000000000',
           '2008-06-04T00:15:53.000000000', ..., '2008-06-04T00:16:39.000000000',
           '2008-06-04T00:16:39.000000000', '2008-06-04T00:16:39.000000000'],
          shape=(483,), dtype='datetime64[ns]')

  • azimuth
    (time)
    float32
    123.8 144.0 144.8 ... 144.0 144.8

    standard_name :

    beam_azimuth_angle

    units :

    degrees

    array([123.75, 144.  , 144.75, 145.5 , 146.25, 147.  , 147.75, 148.5 ,
           149.25, 150.  , 150.75, 151.5 , 152.25, 153.  , 153.75, 154.5 ,
           155.25, 156.  , 156.75, 157.5 , 158.25, 159.  , 159.75, 160.5 ,
           161.25, 162.  , 162.75, 163.5 , 164.25, 165.  , 165.75, 166.5 ,
           167.25, 168.  , 168.75, 169.5 , 170.25, 171.  , 171.75, 172.5 ,
           173.25, 174.  , 174.75, 175.5 , 176.25, 177.  , 177.75, 178.5 ,
           179.25, 180.  , 180.75, 181.5 , 182.25, 183.  , 183.75, 184.5 ,
           185.25, 186.  , 186.75, 187.5 , 188.25, 189.  , 189.75, 190.5 ,
           191.25, 192.  , 192.75, 193.5 , 194.25, 195.  , 195.75, 196.5 ,
           197.25, 198.  , 198.75, 199.5 , 200.25, 201.  , 201.75, 202.5 ,
           203.25, 204.  , 204.75, 205.5 , 206.25, 207.  , 207.75, 208.5 ,
           209.25, 210.  , 210.75, 211.5 , 212.25, 213.  , 213.75, 214.5 ,
           215.25, 216.  , 216.75, 217.5 , 218.25, 219.  , 219.75, 220.5 ,
           221.25, 222.  , 222.75, 223.5 , 224.25, 225.  , 225.75, 226.5 ,
           227.25, 228.  , 228.75, 229.5 , 230.25, 231.  , 231.75, 232.5 ,
           233.25, 234.  , 234.75, 235.5 , 236.25, 237.  , 237.75, 238.5 ,
           239.25, 240.  , 240.75, 241.5 , 242.25, 243.  , 243.75, 244.5 ,
           245.25, 246.  , 246.75, 247.5 , 248.25, 249.  , 249.75, 250.5 ,
           251.25, 252.  , 252.75, 253.5 , 254.25, 255.  , 255.75, 256.5 ,
           257.25, 258.  , 258.75, 259.5 , 260.25, 261.  , 261.75, 262.5 ,
    ...
            29.25,  30.  ,  30.75,  31.5 ,  32.25,  33.  ,  33.75,  34.5 ,
            35.25,  36.  ,  36.75,  37.5 ,  38.25,  39.  ,  39.75,  40.5 ,
            41.25,  42.  ,  42.75,  43.5 ,  44.25,  45.  ,  45.75,  46.5 ,
            47.25,  48.  ,  48.75,  49.5 ,  50.25,  51.  ,  51.75,  52.5 ,
            53.25,  54.  ,  54.75,  55.5 ,  56.25,  57.  ,  57.75,  58.5 ,
            59.25,  60.  ,  60.75,  61.5 ,  62.25,  63.  ,  63.75,  64.5 ,
            65.25,  66.  ,  66.75,  67.5 ,  68.25,  69.  ,  69.75,  70.5 ,
            71.25,  72.  ,  72.75,  73.5 ,  74.25,  75.  ,  75.75,  76.5 ,
            77.25,  78.  ,  78.75,  79.5 ,  80.25,  81.  ,  81.75,  82.5 ,
            83.25,  84.  ,  84.75,  85.5 ,  86.25,  87.  ,  87.75,  88.5 ,
            89.25,  90.  ,  90.75,  91.5 ,  92.25,  93.  ,  93.75,  94.5 ,
            95.25,  96.  ,  96.75,  97.5 ,  98.25,  99.  ,  99.75, 100.5 ,
           101.25, 102.  , 102.75, 103.5 , 104.25, 105.  , 105.75, 106.5 ,
           107.25, 108.  , 108.75, 109.5 , 110.25, 111.  , 111.75, 112.5 ,
           113.25, 114.  , 114.75, 115.5 , 116.25, 117.  , 117.75, 118.5 ,
           119.25, 120.  , 120.75, 121.5 , 122.25, 123.  , 123.75, 124.5 ,
           125.25, 126.  , 126.75, 127.5 , 128.25, 129.  , 129.75, 130.5 ,
           131.25, 132.  , 132.75, 133.5 , 134.25, 135.  , 135.75, 136.5 ,
           137.25, 138.  , 138.75, 139.5 , 140.25, 141.  , 141.75, 142.5 ,
           143.25, 144.  , 144.75], dtype=float32)

  • elevation
    (time)
    float32
    0.5109 0.9998 ... 1.104 1.104

    standard_name :

    beam_elevation_angle

    units :

    degrees

    positive :

    up

    array([0.5109, 0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 0.9998,
           0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 0.9998,
           0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 0.9998,
           0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 0.9998,
           0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 0.9998,
           0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 0.9998,
           0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 0.9998,
           0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 1.0053, 1.0053,
           1.0053, 1.0053, 1.0053, 1.0053, 1.0053, 1.0053, 1.0053, 1.0053,
           1.0108, 1.0108, 1.0108, 1.0108, 1.0108, 1.0108, 1.0108, 1.0217,
           1.0272, 1.0382, 1.0437, 1.0437, 1.0437, 1.0437, 1.0437, 1.0437,
           1.0437, 1.0437, 1.0437, 1.0437, 1.0437, 1.0437, 1.0437, 1.0437,
           1.0437, 1.0437, 1.0437, 1.0437, 1.0437, 1.0437, 1.0437, 1.0437,
           1.0437, 1.0547, 1.0602, 1.0657, 1.0712, 1.0657, 1.0712, 1.0712,
           1.0712, 1.0712, 1.0712, 1.0712, 1.0712, 1.0712, 1.0712, 1.0712,
           1.0712, 1.0712, 1.0712, 1.0712, 1.0712, 1.0712, 1.0712, 1.0712,
           1.0712, 1.0712, 1.0712, 1.0712, 1.0712, 1.0712, 1.0712, 1.0712,
           1.0712, 1.0712, 1.0712, 1.0712, 1.0712, 1.0712, 1.0712, 1.0712,
           1.0712, 1.0712, 1.0712, 1.0712, 1.0712, 1.0712, 1.0712, 1.0712,
           1.0712, 1.0712, 1.0712, 1.0712, 1.0712, 1.0712, 1.0712, 1.0712,
    ...
           1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041,
           1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041,
           1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041,
           1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041,
           1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041,
           1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041,
           1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041,
           1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041,
           1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041,
           1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041,
           1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041,
           1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041,
           1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041,
           1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041,
           1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041,
           1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041,
           1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041,
           1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041,
           1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041, 1.1041,
           1.1041, 1.1041, 1.1041], dtype=float32)

  • range
    (range)
    float32
    150.0 300.0 ... 1.492e+05 1.494e+05

    standard_name :

    range_to_center_of_measurement_volume

    long_name :

    Range from instrument to center of gate

    units :

    meters

    spacing_is_constant :

    true

    meters_to_center_of_first_gate :

    150.00000596046448

    meters_between_gates :

    150.00000596046448

    array([   150.     ,    300.     ,    450.00003, ..., 149100.     ,
           149250.     , 149400.     ], shape=(996,), dtype=float32)

  • latitude
    ()
    float64
    22.53

    standard_name :

    latitude

    units :

    degrees_north

    array(22.52669907)

  • longitude
    ()
    float64
    120.4

    standard_name :

    longitude

    units :

    degrees_east

    array(120.4335022)

  • altitude
    ()
    float64
    45.0

    standard_name :

    altitude

    units :

    meters

    positive :

    up

    array(45.00000179)

• Data variables: (18)
  • sweep_number
    ()
    int32
    1

    standard_name :

    sweep_index_number_0_based

    array(1, dtype=int32)

  • sweep_mode
    ()
    <U20
    'azimuth_surveillance'

    standard_name :

    scan_mode_for_sweep

    options :

    sector, coplane, rhi, vertical_pointing, idle, azimuth_surveillance, elevation_surveillance, sunscan, pointing, calibration, manual_ppi, manual_rhi

    array('azimuth_surveillance', dtype='<U20')

  • prt_mode
    ()
    |S32
    b'not_set'

    standard_name :

    transmit_pulse_mode

    options :

    fixed, staggered, dual

    meta_group :

    radar_parameters

    array(b'not_set', dtype='|S32')

  • follow_mode
    ()
    |S32
    b'not_set'

    standard_name :

    follow_mode_for_scan_strategy

    options :

    none, sun, vehicle, aircraft, target, manual

    meta_group :

    instrument_parameters

    array(b'not_set', dtype='|S32')

  • sweep_fixed_angle
    ()
    float32
    1.099

    standard_name :

    beam_target_fixed_angle

    units :

    degrees

    array(1.0986, dtype=float32)

  • pulse_width
    (time)
    float32
    0.0 0.0 0.0 0.0 ... 0.0 0.0 0.0 0.0

    standard_name :

    transmitter_pulse_width

    units :

    seconds

    meta_group :

    instrument_parameters

    array([0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.,
           0., 0., 0., 0., 0., 0., 0.], dtype=float32)

  • prt
    (time)
    float32
    -9.999e+03 ... -9.999e+03

    standard_name :

    pulse_repetition_frequency

    units :

    seconds

    meta_group :

    instrument_parameters

    array([-9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
    ...
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999.], dtype=float32)

  • prt_ratio
    (time)
    float32
    -9.999e+03 ... -9.999e+03

    standard_name :

    pulse_repetition_frequency_ratio

    units :

    seconds

    meta_group :

    instrument_parameters

    array([-9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
    ...
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999.], dtype=float32)

  • nyquist_velocity
    (time)
    float32
    26.92 26.92 26.92 ... 26.92 26.92

    standard_name :

    unambiguous_doppler_velocity

    units :

    meters per second

    meta_group :

    instrument_parameters

    array([26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
    ...
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925, 26.925,
           26.925, 26.925, 26.925], dtype=float32)

  • unambiguous_range
    (time)
    float32
    1.5e+05 1.5e+05 ... 1.5e+05 1.5e+05

    standard_name :

    unambiguous_range

    units :

    meters

    meta_group :

    instrument_parameters

    array([150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
    ...
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.,
           150000., 150000., 150000., 150000., 150000., 150000., 150000.],
          dtype=float32)

  • antenna_transition
    (time)
    int8
    0 0 0 0 0 0 0 0 ... 0 0 0 0 0 0 0 0

    standard_name :

    antenna_is_in_transition_between_sweeps

    comment :

    1 if antenna is in transition, 0 otherwise

    array([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
          dtype=int8)

  • n_samples
    (time)
    int32
    192 192 192 192 ... 192 192 192 192

    standard_name :

    number_of_samples_used_to_compute_moments

    meta_group :

    instrument_parameters

    array([192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192,
           192, 192], dtype=int32)

  • r_calib_index
    (time)
    int8
    -1 -1 -1 -1 -1 ... -1 -1 -1 -1 -1

    standard_name :

    calibration_data_array_index_per_ray

    meta_group :

    radar_calibration

    comment :

    This is the index for the calibration which applies to this ray

    array([-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
           -1, -1, -1, -1, -1, -1, -1], dtype=int8)

  • measured_transmit_power_h
    (time)
    float32
    -9.999e+03 ... -9.999e+03

    standard_name :

    measured_radar_transmit_power_h_channel

    units :

    dBm

    meta_group :

    radar_parameters

    array([-9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
    ...
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999.], dtype=float32)

  • measured_transmit_power_v
    (time)
    float32
    -9.999e+03 ... -9.999e+03

    standard_name :

    measured_radar_transmit_power_v_channel

    units :

    dBm

    meta_group :

    radar_parameters

    array([-9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
    ...
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999., -9999., -9999., -9999., -9999., -9999.,
           -9999., -9999., -9999.], dtype=float32)

  • scan_rate
    (time)
    float32
    -3.277e+04 ... -3.277e+04

    standard_name :

    antenna_angle_scan_rate

    units :

    degrees per second

    meta_group :

    instrument_parameters

    array([-32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
    ...
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
           -32768., -32768., -32768., -32768., -32768., -32768., -32768.,
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           -32768., -32768., -32768., -32768., -32768., -32768., -32768.],
          dtype=float32)

  • DBZ
    (time, range)
    float32
    -5.8 12.8 4.101 ... -10.1 -2.7 nan

    long_name :

    Computed Horizontal Co-polar Reflectivit

    standard_name :

    equivalent_reflectivity_factor

    units :

    dBZ

    threshold_field_name :

    threshold_value :

    -9999.0

    sampling_ratio :

    1.0

    grid_mapping :

    grid_mapping

    array([[ -5.8003316 ,  12.799261  ,   4.100856  , ...,  -1.2805718 ,
             -4.5300374 ,   0.06967086],
           [  0.71991926,  11.820335  ,  16.720295  , ...,  -6.1396685 ,
             -8.669597  ,  -2.3803089 ],
           [  1.0503734 ,  20.959347  ,  21.899185  , ...,  -8.680257  ,
             -8.669597  ,  -7.6800113 ],
           ...,
           [ 10.610447  ,  29.389479  ,  28.669943  , ...,  -3.7891805 ,
                     nan, -26.460821  ],
           [ 10.670853  ,  25.23926   ,  27.71056   , ...,  -6.210734  ,
                     nan,  -3.130049  ],
           [ 13.470829  ,  29.389479  ,  27.559546  , ..., -10.099789  ,
             -2.7001033 ,          nan]], shape=(483, 996), dtype=float32)

  • VR
    (time, range)
    float32
    26.66 -4.53 -1.61 ... 26.77 nan

    long_name :

    Computed Velocity

    standard_name :

    radial_velocity_of_scatterers_away_from_instrument

    units :

    m/s

    threshold_field_name :

    threshold_value :

    -9999.0

    sampling_ratio :

    1.0

    grid_mapping :

    grid_mapping

    array([[ 26.66014   ,  -4.5303264 ,  -1.6096194 , ...,  25.319609  ,
              5.950194  ,  -7.530369  ],
           [ -0.5602588 ,  -1.2800074 ,  -1.3896054 , ...,  24.59986   ,
              4.549956  , -26.78037   ],
           [ 23.719803  ,  26.40005   ,  -1.6398816 , ..., -19.749735  ,
              9.000128  ,  -0.42039856],
           ...,
           [-26.499832  ,  -2.3203712 ,  -2.0897243 , ...,  20.44004   ,
                     nan, -16.590204  ],
           [ -0.9503952 ,  -1.7298502 ,  -1.2996368 , ...,   7.3602467 ,
                     nan,  -8.189593  ],
           [ -1.3397137 ,  26.530094  ,  -1.7502975 , ...,  -7.6898584 ,
             26.769737  ,          nan]], shape=(483, 996), dtype=float32)

ds = xr.open_dataset(filename, group="radar_parameters", engine="cfradial1")
display(ds.load())

<xarray.Dataset> Size: 20B
Dimensions:                   ()
Data variables:
    radar_beam_width_h        float32 4B 0.92
    radar_receiver_bandwidth  float32 4B -9.999e+03
    radar_antenna_gain_v      float32 4B 45.15
    radar_antenna_gain_h      float32 4B 45.15
    radar_beam_width_v        float32 4B 0.92

xarray.Dataset

• Dimensions:
• Data variables: (5)
  • radar_beam_width_h
    ()
    float32
    0.92

    standard_name :

    half_power_radar_beam_width_h_channel

    units :

    degrees

    meta_group :

    radar_parameters

    array(0.92, dtype=float32)

  • radar_receiver_bandwidth
    ()
    float32
    -9.999e+03

    standard_name :

    radar_receiver_bandwidth

    units :

    s-1

    meta_group :

    radar_parameters

    array(-9999., dtype=float32)

  • radar_antenna_gain_v
    ()
    float32
    45.15

    standard_name :

    nominal_radar_antenna_gain_v_channel

    units :

    dB

    meta_group :

    radar_parameters

    array(45.15, dtype=float32)

  • radar_antenna_gain_h
    ()
    float32
    45.15

    standard_name :

    nominal_radar_antenna_gain_h_channel

    units :

    dB

    meta_group :

    radar_parameters

    array(45.15, dtype=float32)

  • radar_beam_width_v
    ()
    float32
    0.92

    standard_name :

    half_power_radar_beam_width_v_channel

    units :

    degrees

    meta_group :

    radar_parameters

    array(0.92, dtype=float32)

Conclusion

CfRadial1 and CfRadial2 are based on the same principles with slightly different data representation. Nevertheless the conversion is relatively straighforward as has been shown here.

As the implementation with the cfradial1 xarray backend on one hand and the DataTree on the other hand is very versatile users can pick the most usable approach for their workflows.