PVC/KASACR/M1 - 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.

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

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

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

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

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

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

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

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

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

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