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

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

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

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

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

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

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

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

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