NSA/KASACR/C1 - General Quality Statement

The SACR continues to undergo evaluation by the radar instrument mentors, ProSensing, VAP 
developers, DQ Office, site scientists, users, etc.  As more in-depth analysis and 
calibration studies take place, we anticipate that new insights will be gained to increase the 
quality of the data and decrease the uncertainty of the measurements.  This is a 
continuous improvement process and issues will be addressed as they are discovered.

Calibration is very important.  Calibration of the SACRs depends on the careful 
installation of a corner reflector target.  These are installed at all ARM fixed sites and AMF1 on 
Cape Cod.  This provides a external calibration reference not obtainable with a 
zenith-pointing radar such as the KAZR.  However, significant data analysis is required to assure 
that the radar is pointing at the target and there are no interfering losses in the 
transmission path.

As issues are discovered, attempts will be made to correct data that is currently in the 
Archive.  However, retrospective correction of errors due calibration, signal processing, 
component degradation and software bugs may not be possible for many of the data files.

This open-ended DQR is an advisory that some aspects of the data quality are not yet 
known.  It is also a request for users that find issues or questions with the data to contact 
the ARM Radar Engineering & Operations Group Manager, Kevin Widener, at 
kevin.widener@pnnl.gov as these issues occur so that they can be investigated and corrected if necessary.

• data_volume_start_time_utc(time_coverage_start)
• Copol to cross-polar correlation coefficient (also known as rhocx)(co_to_crosspol_correlation_coeff)
• half_power_radar_beam_width_h_channel(radar_beam_width_h)
• Time corresponding to last radial in file(time_coverage_end)
• Distance to the center of the corresponding range bin(range)
• Index of first ray in sweep, 0-based(sweep_start_ray_index)
• antenna_is_in_transition_between_sweeps(antenna_transition)
• Scan rate, positive for clockwise or increasing elevation(scan_rate)
• Noise power in noise source region for vertical cross-polar channel(r_calib_noise_source_power_v)
• Doppler spectrum width (second moment of the doppler spectrum)(spectral_width)
• Noise power in noise source region for horizontal copolar channel 1(r_calib_noise_source_power_h)
• Polarization mode(polarization_mode)
• Noise floor power for horizontal copolar channel1(r_calib_noise_hc)
• Sky noise, copolar(sky_noise_copol)
• Radar beam width, vertical channel(radar_beam_width_v)
• Unambiguous Doppler velocity(nyquist_velocity)
• pulse_repetition_frequency(prt)
• radiation_frequency(frequency)
• Azimuth of Radar Ray(azimuth)
• Follow mode(follow_mode)
• Receiver gain for vertical cross-polar channel 2(r_calib_receiver_gain_vx)
• Sky power, copolar(sky_power_copol)
• calibrated_radar_receiver_gain_v_co_polar_channel(r_calib_receiver_gain_hc)
• platform_type(platform_type)
• Cross-polar propagation phase shift(cross_polar_differential_phase)
• ray_target_fixed_angle(fixed_angle)
• lon(lon)
• Noise flor for vertical cross-polar channel 2(r_calib_noise_vx)
• Sweep number, zero-based count(sweep_number)
• Scan mode for sweep(sweep_mode)
• Beam Elevation Angle(elevation)
• Transmit power(r_calib_xmit_power_h)
• East longitude(longitude)
• Number of samples used to compute moments(n_samples)
• altitude_above_ground_level(altitude_agl)
• Sky noise, cross-polarization(sky_noise_xpol)
• Primary axis of rotation(primary_axis)
• Linear depolarization ratio(linear_depolarization_ratio)
• altitude(altitude)
• reflectivity(reflectivity)
• radar_calibration_two_way_radome_loss_h_channel(r_calib_two_way_radome_loss_h)
• Nominal radar antenna gain, v channel(radar_antenna_gain_v)
• base time in epoch(base_time)
• Unambiguous range(unambiguous_range)
• North latitude(latitude)
• Nominal radar antenna gain, h channel(radar_antenna_gain_h)
• time_in_seconds_since_volume_start(time)
• Radar measured transmit power, h channel(radar_measured_transmit_power_h)
• Pulse width for this calibration(r_calib_pulse_width)
• Index for the calibration that applies to each ray(r_calib_index)
• Signal-to-noise-ratio(snr)
• Pulse width(pulse_width)
• type_of_instrument(instrument_type)
• Time offset from base_time(time_offset)
• North Latitude(lat)
• -180.0 - +180.0(alt)
• Sky power, cross-polar(sky_power_xpol)
• Time index of last ray in sweep, 0-based(sweep_end_ray_index)
• Time of the calibration that applies to each ray(r_calib_time)
• Radar constant, horizontal copolar channel 1(r_calib_radar_constant_h)
• Mean doppler velocity(mean_doppler_velocity)
• data_volume_index_number(volume_number)
• Radar constant, vertical cross-polar channel 2(r_calib_radar_constant_v)
• transmit_pulse_mode(prt_mode)

• reflectivity(reflectivity)
• antenna_is_in_transition_between_sweeps(antenna_transition)
• half_power_radar_beam_width_h_channel(radar_beam_width_h)
• Noise power in noise source region for vertical cross-polar channel(r_calib_noise_source_power_v)
• East longitude(longitude)
• altitude(altitude)
• Radar beam width, vertical channel(radar_beam_width_v)
• lon(lon)
• Radar constant, vertical cross-polar channel 2(r_calib_radar_constant_v)
• Scan mode for sweep(sweep_mode)
• Distance to the center of the corresponding range bin(range)
• Radar constant, horizontal copolar channel 1(r_calib_radar_constant_h)
• Noise power in noise source region for horizontal copolar channel 1(r_calib_noise_source_power_h)
• Nominal radar antenna gain, h channel(radar_antenna_gain_h)
• Nominal radar antenna gain, v channel(radar_antenna_gain_v)
• pulse_repetition_frequency(prt)
• Polarization mode(polarization_mode)
• Copol to cross-polar correlation coefficient (also known as rhocx)(co_to_crosspol_correlation_coeff)
• ray_target_fixed_angle(fixed_angle)
• Index for the calibration that applies to each ray(r_calib_index)
• Linear depolarization ratio(linear_depolarization_ratio)
• radiation_frequency(frequency)
• type_of_instrument(instrument_type)
• radar_calibration_two_way_radome_loss_h_channel(r_calib_two_way_radome_loss_h)
• Beam Elevation Angle(elevation)
• Unambiguous range(unambiguous_range)
• data_volume_start_time_utc(time_coverage_start)
• Sky power, cross-polar(sky_power_xpol)
• Index of first ray in sweep, 0-based(sweep_start_ray_index)
• Time corresponding to last radial in file(time_coverage_end)
• Number of samples used to compute moments(n_samples)
• -180.0 - +180.0(alt)
• Noise flor for vertical cross-polar channel 2(r_calib_noise_vx)
• Receiver gain for vertical cross-polar channel 2(r_calib_receiver_gain_vx)
• Time of the calibration that applies to each ray(r_calib_time)
• Signal-to-noise-ratio(snr)
• North Latitude(lat)
• Sky noise, copolar(sky_noise_copol)
• Time offset from base_time(time_offset)
• Noise floor power for horizontal copolar channel1(r_calib_noise_hc)
• Sky power, copolar(sky_power_copol)
• data_volume_index_number(volume_number)
• platform_type(platform_type)
• Follow mode(follow_mode)
• base time in epoch(base_time)
• Sky noise, cross-polarization(sky_noise_xpol)
• Unambiguous Doppler velocity(nyquist_velocity)
• Time index of last ray in sweep, 0-based(sweep_end_ray_index)
• Radar measured transmit power, h channel(radar_measured_transmit_power_h)
• Mean doppler velocity(mean_doppler_velocity)
• North latitude(latitude)
• altitude_above_ground_level(altitude_agl)
• Scan rate, positive for clockwise or increasing elevation(scan_rate)
• time_in_seconds_since_volume_start(time)
• Primary axis of rotation(primary_axis)
• Transmit power(r_calib_xmit_power_h)
• transmit_pulse_mode(prt_mode)
• Pulse width(pulse_width)
• Pulse width for this calibration(r_calib_pulse_width)
• Sweep number, zero-based count(sweep_number)
• calibrated_radar_receiver_gain_v_co_polar_channel(r_calib_receiver_gain_hc)
• Azimuth of Radar Ray(azimuth)
• Cross-polar propagation phase shift(cross_polar_differential_phase)
• Doppler spectrum width (second moment of the doppler spectrum)(spectral_width)

• Noise flor for vertical cross-polar channel 2(r_calib_noise_vx)
• -180.0 - +180.0(alt)
• East longitude(longitude)
• radiation_frequency(frequency)
• Doppler spectrum width (second moment of the doppler spectrum)(spectral_width)
• Time corresponding to last radial in file(time_coverage_end)
• Scan mode for sweep(sweep_mode)
• Linear depolarization ratio(linear_depolarization_ratio)
• Polarization mode(polarization_mode)
• Transmit power(r_calib_xmit_power_h)
• Copol to cross-polar correlation coefficient (also known as rhocx)(co_to_crosspol_correlation_coeff)
• North Latitude(lat)
• Mean doppler velocity(mean_doppler_velocity)
• Signal-to-noise-ratio(snr)
• Scan rate, positive for clockwise or increasing elevation(scan_rate)
• pulse_repetition_frequency(prt)
• Receiver gain for vertical cross-polar channel 2(r_calib_receiver_gain_vx)
• ray_target_fixed_angle(fixed_angle)
• Noise power in noise source region for horizontal copolar channel 1(r_calib_noise_source_power_h)
• Beam Elevation Angle(elevation)
• Sweep number, zero-based count(sweep_number)
• Noise power in noise source region for vertical cross-polar channel(r_calib_noise_source_power_v)
• type_of_instrument(instrument_type)
• North latitude(latitude)
• Time of the calibration that applies to each ray(r_calib_time)
• base time in epoch(base_time)
• Sky noise, copolar(sky_noise_copol)
• altitude_above_ground_level(altitude_agl)
• data_volume_start_time_utc(time_coverage_start)
• Unambiguous range(unambiguous_range)
• Primary axis of rotation(primary_axis)
• Sky noise, cross-polarization(sky_noise_xpol)
• Noise floor power for horizontal copolar channel1(r_calib_noise_hc)
• Time index of last ray in sweep, 0-based(sweep_end_ray_index)
• platform_type(platform_type)
• lon(lon)
• Nominal radar antenna gain, h channel(radar_antenna_gain_h)
• Number of samples used to compute moments(n_samples)
• Nominal radar antenna gain, v channel(radar_antenna_gain_v)
• Sky power, cross-polar(sky_power_xpol)
• Follow mode(follow_mode)
• time_in_seconds_since_volume_start(time)
• data_volume_index_number(volume_number)
• Cross-polar propagation phase shift(cross_polar_differential_phase)
• calibrated_radar_receiver_gain_v_co_polar_channel(r_calib_receiver_gain_hc)
• reflectivity(reflectivity)
• transmit_pulse_mode(prt_mode)
• Pulse width for this calibration(r_calib_pulse_width)
• Radar measured transmit power, h channel(radar_measured_transmit_power_h)
• Azimuth of Radar Ray(azimuth)
• Radar beam width, vertical channel(radar_beam_width_v)
• half_power_radar_beam_width_h_channel(radar_beam_width_h)
• radar_calibration_two_way_radome_loss_h_channel(r_calib_two_way_radome_loss_h)
• altitude(altitude)
• Index for the calibration that applies to each ray(r_calib_index)
• Radar constant, horizontal copolar channel 1(r_calib_radar_constant_h)
• Radar constant, vertical cross-polar channel 2(r_calib_radar_constant_v)
• antenna_is_in_transition_between_sweeps(antenna_transition)
• Index of first ray in sweep, 0-based(sweep_start_ray_index)
• Distance to the center of the corresponding range bin(range)
• Pulse width(pulse_width)
• Time offset from base_time(time_offset)
• Unambiguous Doppler velocity(nyquist_velocity)
• Sky power, copolar(sky_power_copol)

• base time in epoch(base_time)
• reflectivity(reflectivity)
• Spectra(spectra)
• -180.0 - +180.0(alt)
• North Latitude(lat)
• Time offset from base_time(time_offset)
• Doppler spectrum width (second moment of the doppler spectrum)(spectral_width)
• Signal-to-noise ratio(signal_to_noise_ratio)
• Mean doppler velocity(mean_doppler_velocity)
• Locator Mask for Spectra(locator_mask)
• Spectral velocity bins(velocity_bins)
• Distance to the center of the corresponding range bin(range)
• Azimuth of Radar Ray(azimuth)
• Beam Elevation Angle(elevation)
• time_in_seconds_since_volume_start(time)
• lon(lon)

• Sky power, copolar(sky_power_copol)
• Polarization mode(polarization_mode)
• Noise floor power for horizontal copolar channel1(r_calib_noise_hc)
• radiation_frequency(frequency)
• Time offset from base_time(time_offset)
• data_volume_index_number(volume_number)
• Copol to cross-polar correlation coefficient (also known as rhocx)(co_to_crosspol_correlation_coeff)
• altitude_above_ground_level(altitude_agl)
• platform_type(platform_type)
• Primary axis of rotation(primary_axis)
• lon(lon)
• time_in_seconds_since_volume_start(time)
• Index of first ray in sweep, 0-based(sweep_start_ray_index)
• Scan rate, positive for clockwise or increasing elevation(scan_rate)
• Sky power, cross-polar(sky_power_xpol)
• Sweep number, zero-based count(sweep_number)
• Radar beam width, vertical channel(radar_beam_width_v)
• altitude(altitude)
• half_power_radar_beam_width_h_channel(radar_beam_width_h)
• Transmit power(r_calib_xmit_power_h)
• Unambiguous Doppler velocity(nyquist_velocity)
• Receiver gain for vertical cross-polar channel 2(r_calib_receiver_gain_vx)
• Linear depolarization ratio(linear_depolarization_ratio)
• ray_target_fixed_angle(fixed_angle)
• Pulse width(pulse_width)
• data_volume_start_time_utc(time_coverage_start)
• Radar constant, vertical cross-polar channel 2(r_calib_radar_constant_v)
• transmit_pulse_mode(prt_mode)
• Radar constant, horizontal copolar channel 1(r_calib_radar_constant_h)
• Noise flor for vertical cross-polar channel 2(r_calib_noise_vx)
• radar_calibration_two_way_radome_loss_h_channel(r_calib_two_way_radome_loss_h)
• Nominal radar antenna gain, v channel(radar_antenna_gain_v)
• type_of_instrument(instrument_type)
• Radar measured transmit power, h channel(radar_measured_transmit_power_h)
• base time in epoch(base_time)
• Nominal radar antenna gain, h channel(radar_antenna_gain_h)
• antenna_is_in_transition_between_sweeps(antenna_transition)
• reflectivity(reflectivity)
• Azimuth of Radar Ray(azimuth)
• pulse_repetition_frequency(prt)
• Sky noise, cross-polarization(sky_noise_xpol)
• Doppler spectrum width (second moment of the doppler spectrum)(spectral_width)
• Noise power in noise source region for vertical cross-polar channel(r_calib_noise_source_power_v)
• Noise power in noise source region for horizontal copolar channel 1(r_calib_noise_source_power_h)
• Number of samples used to compute moments(n_samples)
• Pulse width for this calibration(r_calib_pulse_width)
• Cross-polar propagation phase shift(cross_polar_differential_phase)
• Follow mode(follow_mode)
• Mean doppler velocity(mean_doppler_velocity)
• Distance to the center of the corresponding range bin(range)
• North latitude(latitude)
• East longitude(longitude)
• Signal-to-noise-ratio(snr)
• Scan mode for sweep(sweep_mode)
• Time corresponding to last radial in file(time_coverage_end)
• Index for the calibration that applies to each ray(r_calib_index)
• Time index of last ray in sweep, 0-based(sweep_end_ray_index)
• Sky noise, copolar(sky_noise_copol)
• Time of the calibration that applies to each ray(r_calib_time)
• calibrated_radar_receiver_gain_v_co_polar_channel(r_calib_receiver_gain_hc)
• North Latitude(lat)
• Beam Elevation Angle(elevation)
• -180.0 - +180.0(alt)
• Unambiguous range(unambiguous_range)

• Locator Mask for Spectra(locator_mask)
• Doppler spectrum width (second moment of the doppler spectrum)(spectral_width)
• Mean doppler velocity(mean_doppler_velocity)
• time_in_seconds_since_volume_start(time)
• Spectra(spectra)
• Azimuth of Radar Ray(azimuth)
• -180.0 - +180.0(alt)
• North Latitude(lat)
• Signal-to-noise ratio(signal_to_noise_ratio)
• Spectral velocity bins(velocity_bins)
• Time offset from base_time(time_offset)
• base time in epoch(base_time)
• reflectivity(reflectivity)
• Distance to the center of the corresponding range bin(range)
• Beam Elevation Angle(elevation)
• lon(lon)

• ray_target_fixed_angle(fixed_angle)
• lon(lon)
• altitude(altitude)
• Distance to the center of the corresponding range bin(range)
• Cross-polar propagation phase shift(cross_polar_differential_phase)
• Noise floor power for horizontal copolar channel1(r_calib_noise_hc)
• data_volume_index_number(volume_number)
• type_of_instrument(instrument_type)
• Transmit power(r_calib_xmit_power_h)
• Number of samples used to compute moments(n_samples)
• Unambiguous Doppler velocity(nyquist_velocity)
• calibrated_radar_receiver_gain_v_co_polar_channel(r_calib_receiver_gain_hc)
• Copol to cross-polar correlation coefficient (also known as rhocx)(co_to_crosspol_correlation_coeff)
• Index for the calibration that applies to each ray(r_calib_index)
• Time corresponding to last radial in file(time_coverage_end)
• Linear depolarization ratio(linear_depolarization_ratio)
• platform_type(platform_type)
• Pulse width for this calibration(r_calib_pulse_width)
• Sky power, cross-polar(sky_power_xpol)
• East longitude(longitude)
• radiation_frequency(frequency)
• Sky noise, copolar(sky_noise_copol)
• North latitude(latitude)
• Time offset from base_time(time_offset)
• Nominal radar antenna gain, v channel(radar_antenna_gain_v)
• transmit_pulse_mode(prt_mode)
• pulse_repetition_frequency(prt)
• Nominal radar antenna gain, h channel(radar_antenna_gain_h)
• Pulse width(pulse_width)
• radar_calibration_two_way_radome_loss_h_channel(r_calib_two_way_radome_loss_h)
• Time index of last ray in sweep, 0-based(sweep_end_ray_index)
• Sky power, copolar(sky_power_copol)
• Noise power in noise source region for vertical cross-polar channel(r_calib_noise_source_power_v)
• time_in_seconds_since_volume_start(time)
• Azimuth of Radar Ray(azimuth)
• Radar measured transmit power, h channel(radar_measured_transmit_power_h)
• data_volume_start_time_utc(time_coverage_start)
• Noise power in noise source region for horizontal copolar channel 1(r_calib_noise_source_power_h)
• antenna_is_in_transition_between_sweeps(antenna_transition)
• Noise flor for vertical cross-polar channel 2(r_calib_noise_vx)
• Beam Elevation Angle(elevation)
• Sweep number, zero-based count(sweep_number)
• Unambiguous range(unambiguous_range)
• Sky noise, cross-polarization(sky_noise_xpol)
• -180.0 - +180.0(alt)
• North Latitude(lat)
• Receiver gain for vertical cross-polar channel 2(r_calib_receiver_gain_vx)
• Signal-to-noise-ratio(snr)
• Primary axis of rotation(primary_axis)
• Scan rate, positive for clockwise or increasing elevation(scan_rate)
• altitude_above_ground_level(altitude_agl)
• base time in epoch(base_time)
• Time of the calibration that applies to each ray(r_calib_time)
• Scan mode for sweep(sweep_mode)
• Index of first ray in sweep, 0-based(sweep_start_ray_index)
• Mean doppler velocity(mean_doppler_velocity)
• Follow mode(follow_mode)
• reflectivity(reflectivity)
• half_power_radar_beam_width_h_channel(radar_beam_width_h)
• Doppler spectrum width (second moment of the doppler spectrum)(spectral_width)
• Radar beam width, vertical channel(radar_beam_width_v)
• Polarization mode(polarization_mode)
• Radar constant, vertical cross-polar channel 2(r_calib_radar_constant_v)
• Radar constant, horizontal copolar channel 1(r_calib_radar_constant_h)

• pulse_repetition_frequency(prt)
• Scan mode for sweep(sweep_mode)
• East longitude(longitude)
• Unambiguous Doppler velocity(nyquist_velocity)
• altitude(altitude)
• lon(lon)
• Time corresponding to last radial in file(time_coverage_end)
• altitude_above_ground_level(altitude_agl)
• type_of_instrument(instrument_type)
• Radar measured transmit power, h channel(radar_measured_transmit_power_h)
• radiation_frequency(frequency)
• Receiver gain for vertical cross-polar channel 2(r_calib_receiver_gain_vx)
• Radar beam width, vertical channel(radar_beam_width_v)
• reflectivity(reflectivity)
• half_power_radar_beam_width_h_channel(radar_beam_width_h)
• Number of samples used to compute moments(n_samples)
• Transmit power(r_calib_xmit_power_h)
• time_in_seconds_since_volume_start(time)
• Distance to the center of the corresponding range bin(range)
• ray_target_fixed_angle(fixed_angle)
• data_volume_start_time_utc(time_coverage_start)
• platform_type(platform_type)
• Radar constant, horizontal copolar channel 1(r_calib_radar_constant_h)
• antenna_is_in_transition_between_sweeps(antenna_transition)
• Time of the calibration that applies to each ray(r_calib_time)
• transmit_pulse_mode(prt_mode)
• Radar constant, vertical cross-polar channel 2(r_calib_radar_constant_v)
• Beam Elevation Angle(elevation)
• Azimuth of Radar Ray(azimuth)
• Doppler spectrum width (second moment of the doppler spectrum)(spectral_width)
• Noise flor for vertical cross-polar channel 2(r_calib_noise_vx)
• Nominal radar antenna gain, h channel(radar_antenna_gain_h)
• Nominal radar antenna gain, v channel(radar_antenna_gain_v)
• Follow mode(follow_mode)
• base time in epoch(base_time)
• calibrated_radar_receiver_gain_v_co_polar_channel(r_calib_receiver_gain_hc)
• Linear depolarization ratio(linear_depolarization_ratio)
• Mean doppler velocity(mean_doppler_velocity)
• Signal-to-noise-ratio(snr)
• -180.0 - +180.0(alt)
• Noise power in noise source region for horizontal copolar channel 1(r_calib_noise_source_power_h)
• Unambiguous range(unambiguous_range)
• North latitude(latitude)
• North Latitude(lat)
• Noise power in noise source region for vertical cross-polar channel(r_calib_noise_source_power_v)
• Pulse width(pulse_width)
• radar_calibration_two_way_radome_loss_h_channel(r_calib_two_way_radome_loss_h)
• Sweep number, zero-based count(sweep_number)
• Scan rate, positive for clockwise or increasing elevation(scan_rate)
• Noise floor power for horizontal copolar channel1(r_calib_noise_hc)
• Time index of last ray in sweep, 0-based(sweep_end_ray_index)
• Index for the calibration that applies to each ray(r_calib_index)
• Primary axis of rotation(primary_axis)
• Pulse width for this calibration(r_calib_pulse_width)
• Polarization mode(polarization_mode)
• data_volume_index_number(volume_number)
• Index of first ray in sweep, 0-based(sweep_start_ray_index)

• altitude_above_ground_level(altitude_agl)
• Time of the calibration that applies to each ray(r_calib_time)
• Primary axis of rotation(primary_axis)
• -180.0 - +180.0(alt)
• North Latitude(lat)
• Signal-to-noise-ratio(snr)
• base time in epoch(base_time)
• Sweep number, zero-based count(sweep_number)
• Radar measured transmit power, h channel(radar_measured_transmit_power_h)
• Follow mode(follow_mode)
• Noise power in noise source region for horizontal copolar channel 1(r_calib_noise_source_power_h)
• Noise power in noise source region for vertical cross-polar channel(r_calib_noise_source_power_v)
• Nominal radar antenna gain, h channel(radar_antenna_gain_h)
• Nominal radar antenna gain, v channel(radar_antenna_gain_v)
• Pulse width for this calibration(r_calib_pulse_width)
• Polarization mode(polarization_mode)
• Index of first ray in sweep, 0-based(sweep_start_ray_index)
• pulse_repetition_frequency(prt)
• Copol to cross-polar correlation coefficient (also known as rhocx)(co_to_crosspol_correlation_coeff)
• transmit_pulse_mode(prt_mode)
• Receiver gain for vertical cross-polar channel 2(r_calib_receiver_gain_vx)
• Sky power, cross-polar(sky_power_xpol)
• Beam Elevation Angle(elevation)
• Unambiguous range(unambiguous_range)
• Index for the calibration that applies to each ray(r_calib_index)
• data_volume_index_number(volume_number)
• altitude(altitude)
• Scan mode for sweep(sweep_mode)
• Number of samples used to compute moments(n_samples)
• Pulse width(pulse_width)
• Distance to the center of the corresponding range bin(range)
• Time offset from base_time(time_offset)
• Noise flor for vertical cross-polar channel 2(r_calib_noise_vx)
• Time corresponding to last radial in file(time_coverage_end)
• Azimuth of Radar Ray(azimuth)
• radiation_frequency(frequency)
• East longitude(longitude)
• radar_calibration_two_way_radome_loss_h_channel(r_calib_two_way_radome_loss_h)
• Sky noise, copolar(sky_noise_copol)
• time_in_seconds_since_volume_start(time)
• lon(lon)
• type_of_instrument(instrument_type)
• data_volume_start_time_utc(time_coverage_start)
• antenna_is_in_transition_between_sweeps(antenna_transition)
• Cross-polar propagation phase shift(cross_polar_differential_phase)
• Doppler spectrum width (second moment of the doppler spectrum)(spectral_width)
• Radar constant, vertical cross-polar channel 2(r_calib_radar_constant_v)
• Scan rate, positive for clockwise or increasing elevation(scan_rate)
• Time index of last ray in sweep, 0-based(sweep_end_ray_index)
• Radar constant, horizontal copolar channel 1(r_calib_radar_constant_h)
• ray_target_fixed_angle(fixed_angle)
• Linear depolarization ratio(linear_depolarization_ratio)
• Unambiguous Doppler velocity(nyquist_velocity)
• Transmit power(r_calib_xmit_power_h)
• platform_type(platform_type)
• Sky power, copolar(sky_power_copol)
• Sky noise, cross-polarization(sky_noise_xpol)
• half_power_radar_beam_width_h_channel(radar_beam_width_h)
• North latitude(latitude)
• calibrated_radar_receiver_gain_v_co_polar_channel(r_calib_receiver_gain_hc)
• Mean doppler velocity(mean_doppler_velocity)
• Noise floor power for horizontal copolar channel1(r_calib_noise_hc)
• reflectivity(reflectivity)
• Radar beam width, vertical channel(radar_beam_width_v)