Datastream : KASACRPPI

Ka-Band Scanning ARM Cloud Radar (KASACR) PPI

Active Dates
2011.04.11 - 2017.02.15

Measurement Categories
Cloud Properties

Originating Instrument
Ka-Band Scanning ARM Cloud Radar (KASACR)


Only measurements considered scientifically relevant are shown below by default.

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Measurement Units Variable
Altitude above mean sea level m alt
Altitude m altitude
Altitude above ground level m altitude_agl
Antenna transition indicator, 1 if between sweeps, otherwise 0 unitless antenna_transition ( time )
Azimuth angle from true north degree azimuth ( time )
Base time in Epoch seconds since 1970-1-1 0:00:00 0:00 base_time
Copol to cross-polar correlation coefficient (also known as rhocx) unitless co_to_crosspol_correlation_coeff ( time, range )
Cross-polar propagation phase shift degree cross_polar_differential_phase ( time, range )
Elevation angle from horizontal degree elevation ( time )
Target angle for sweep degrees fixed_angle ( sweep )
Follow mode unitless follow_mode ( sweep, string_length_4 )
Operating frequency Hz frequency ( frequency )
Instrument type unitless instrument_type ( string_length_6 )
North latitude degree_N lat
Latitude degree_N latitude
Linear depolarization ratio H dB linear_depolarization_ratio ( time, range )
East longitude degree_E lon
Longitude degrees_east longitude
Mean Doppler velocity meters per second mean_doppler_velocity ( time, range )
Number of samples used to compute moments unitless n_samples ( time )
Unambiguous Doppler velocity meters per second nyquist_velocity ( time )
Platform type unitless platform_type ( string_length_6 )
Polarization mode unitless polarization_mode ( sweep, string_length_10 )
Primary axis of rotation unitless primary_axis ( string_length_6 )
Pulse repetition time seconds prt ( sweep )
PRT mode unitless prt_mode ( sweep, string_length_6 )
Pulse width s pulse_width ( time )
Index for the calibration that applies to each ray unitless r_calib_index ( time )
Noise floor power for horizontal copolar channel1 dBm r_calib_noise_hc ( r_calib )
Noise power in noise source region for horizontal copolar channel 1 dBm r_calib_noise_source_power_h ( r_calib )
Noise power in noise source region for vertical cross-polar channel dBm r_calib_noise_source_power_v ( r_calib )
Noise floor for vertical cross-polar channel 2 dBm r_calib_noise_vx ( r_calib )
Pulse width for this calibration s r_calib_pulse_width ( r_calib )
Radar constant, horizontal copolar channel 1 dB r_calib_radar_constant_h ( r_calib )
Radar constant, vertical cross-polar channel 2 dB r_calib_radar_constant_v ( r_calib )
Receiver gain for horizontal copolar channel 1 dB r_calib_receiver_gain_hc ( r_calib )
Receiver gain for vertical cross-polar channel 2 dB r_calib_receiver_gain_vx ( r_calib )
Time of the calibration that applies to each ray UTC r_calib_time ( r_calib, string_length_21 )
Two-way radome loss dB r_calib_two_way_radome_loss_h ( r_calib )
Transmit power dBm r_calib_xmit_power_h ( r_calib )
Nominal radar antenna gain, h channel dB radar_antenna_gain_h
Nominal radar antenna gain, v channel dB radar_antenna_gain_v
Radar beam width, horizontal channel degrees radar_beam_width_h
Radar beam width, vertical channel degrees radar_beam_width_v
Radar measured transmit power, h channel dBm radar_measured_transmit_power_h ( time )
Range to measurement volume m range ( range )
Equivalent reflectivity factor dBZ reflectivity ( time, range )
Scan rate, positive for clockwise or increasing elevation degrees per second scan_rate ( time )
Sky noise, copolar dBm sky_noise_copol ( time )
Sky noise, cross-polar dBm sky_noise_xpol ( time )
Sky power, copolar dBm sky_power_copol ( time )
Sky power, cross-polar dBm sky_power_xpol ( time )
Signal-to-noise-ratio dB snr ( time, range )
Spectrum width m/s spectral_width ( time, range )
Index of last ray in sweep, 0-based count sweep_end_ray_index ( sweep )
Sweep mode unitless sweep_mode ( sweep, string_length_24 )
Sweep number count sweep_number ( sweep )
Index of first ray in sweep, 0-based count sweep_start_ray_index ( sweep )
Time in seconds since volume start time ( time )
Time corresponding to last radial in file unitless time_coverage_end ( string_length_21 )
Time corresponding to first radial in file unitless time_coverage_start ( string_length_21 )
Time offset from base_time time_offset ( time )
Unambiguous range m unambiguous_range ( time )
Volume number unitless volume_number


North Slope Alaska
NSAC1 Browse DataCentral Facility, Barrow AK
Southern Great Plains
SGPC1 Browse DataCentral Facility, Lamont, OK
Tropical Western Pacific
TWPC1 Browse DataCentral Facility, Manus I., PNG
TWPC3 Browse DataCentral Facility, Darwin, Australia
ARM Mobile Facility
ASIM1 Browse DataAscension Island, South Atlantic Ocean; AMF1
AWRM1 Browse DataMcMurdo Station Ross Ice Shelf, Antarctica; AMF2
GANS1 Browse DataWharf site, Gan Island, Maldives
PVCM1 Browse DataHighland Center, Cape Cod MA; AMF1
TMPM1 Browse DataU. of Helsinki Research Station (SMEAR II), Hyytiala, Finland; AMF2


Joseph Hardin
Pacific Northwest National Laboratory
(509) 375-2664

Dan Nelson
Pacific Northwest National Laboratory
(509) 375-6895

Iosif (Andrei) Lindenmaier
Pacific Northwest National Laboratory
(509) 375--6802

Bradley Isom
Pacific Northwest National Laboratory

Karen Johnson
Brookhaven National Laboratory
data analysis
(631) 344-5952

Alyssa Matthews
Pacific Northwest National Laboratory
data analysis

Nitin Bharadwaj
Pacific Northwest National Laboratory
(509) 372-4267