GCPEx

GHRC published the guide document for the GPM Ground Validation Environment Canada (EC) Radiosonde GCPEx dataset. This dataset includes measurements of temperature, pressure, humidity, and wind collected in the upper atmosphere by Vaisala RS92 Radiosondes during the GPM Cold-season Precipitation Experiment (GCPEx) at Environment Canada’s Centre for Atmospheric Research Experiments (CARE)in Ontario, Canada from January 17 to February 29, 2012.

GHRC published the GPM Ground Validation Dual Polarized C-Band Doppler Radar King City GCPEx dataset. This dataset of observations from Environment Canada’s operational Doppler radar at King City, Ontario (WKR) has special RHI (Range Height Indicator) and sector scans of several dual polarization parameters and was created by the C-Band radar during the GPM Cold-season Precipitation Experiment (GCPEx) in Ontario, Canada. Additionally, specially configured CARE-centric composites (Environment Canada’s Centre for Atmospheric Research Experiments) were also generated. Standard WKR IRIS (Interactive Radar Information System volume and PPI (Plan Position Indicator) scans, along with corresponding standard PPI imagery, are also included. Data was collected from January 15, 2012 through March 3, 2012.

GHRC published the GPM Ground Validation McGill Vertical Pointing X-Band (VertiX) Radar GCPEx dataset which collected data from January 15, 2012 to February 29, 2012 at the CARE site in Ontario, Canada as a part of the GPM Cold-season Precipitation Experiment (GCPEx). The VertiX, a vertically pointing X-band radar, can detect all precipitation targets and some ice clouds. The VertiX can also measure the Doppler velocity of precipitation targets. The GPM Ground Validation McGill Vertical Pointing X-Band (VertiX) Radar GCPEx dataset is available in netCDF format.

GHRC published two guides from the GPM Cold-season Precipitation Experiment (GCPEx). The GPM Ground Validation Environment Canada (EC) Vaisala Ceilometer GCPEx data were collected in Huronia, Canada from January 15, 2012 through March 1, 2012. The CT25K ceilometer uses pulsed diode laser LIDAR technology to derive backscatter profiles, cloud heights and vertical visibilities. It is also able to detect 3 cloud layers simultaneously. The GPM Ground Validation Environment Canada (EC) Radiometer GCPEx dataset contains retrievals of temperature, water vapor, relative humidity, liquid water profiles and surface parameters acquired by a passive microwave radiometer. Its data were collected in Ontario, Canada February 2012 through March 1, 2012. Data plots are available in the browse files.

GHRC published two GOES Imagery datasets: GPM Ground Validation GOES 13 Visible and Infrared Images MC3E and GPM Ground Validation GOES 13 Visible and Infrared Images GCPEx. These GOES datasets include IR3, IR4, and visiblity imagery files collected at 15 minute intervals in near real-time during the mission and were used by the Real Time Mission Monitor (RTMM). The Midlatitude Continental Convective Clouds Experiment (MC3E) took place in central Oklahoma and has files available for dates between May 6, 2011 and June 30, 2011. The GPM Cold-Season Precipitation Experiment (GCPEx) occurred in Ontario, Canada, and has files available for dates between January 1, 2012 and March 13, 2012.

GHRC published the GPM Ground Validation McGill W-Band Radar GCPEx dataset collected at Environment Canada’s Centre for Atmospheric Research Experiments (CARE) in Ontario, Canada, as part of the GPM Cold-season Precipitation Experiment from February 1, 2012 to February 29, 2012. The W-Band radar is a single antenna, 94-GHz pulsed Doppler, vertical pointing radar system. Data products from the W-Band radar include radar reflectivity, Doppler moments, and Doppler spectra of variable lengths. The W-Band radar is primarily used to research cloud properties. The GPM Ground Validation McGill W-Band Radar GCPEx dataset is available in netCDF format.

GHRC has published two GPM Ground Validation Dual-frequency Dual-polarized Dopper Radar (D3R) datasets, for the GCPEX (January and February 2012) and IFloodS (May-June 2013) campaigns. The D3R is a fully polarimetric, scanning weather radar system operating at the nominal frequencies of 13.91 GHz and 35.56 GHz covering a maximum range of 30 km. These GPM Ground Validation Dual-frequency Dual-polarized Doppler Radar (D3R) datasets are in the netCDF format. Browse images are also available in .png format.

The Global Hydrology Resource Center (GHRC) released the GPM Ground Validation NCAR Cloud Microphysics Particle Probes GCPEx dataset containing data collected during the Global Precipitation Measurement (GPM) Cold-season Precipitation Experiment (GCPEX) for January and February 2012. Particle size distributions and particle image data, processed by NCAR, were obtained from the 2D-C Probe, the Cloud Imaging Probe (CIP) and the High Volume Precipitation Spectrometer (HVPS-3) carried aboard the University of North Dakota (UND) Cessna Citation aircraft. A related cloud microphysics dataset, GPM Ground Validation UND Citation Cloud Microphysics GCPEx is also available.

GHRC released two snow-related datasets from the Global Precipitation Measurement (GPM) Cold-season Precipitation Experiment (GCPEX) in Ontario, Canada during winter 2012: Environment Canada (EC) Manual Precipitation Measurements GCPEx and Environment Canada (EC) Snow Surveys GCPEx. The manual observations were collected using a Tretyakov gauge inside a double fence intercomparison reference (DFIR) shield, which recorded precipitation amount, weight, snow water equivalent and present weather condition. The snow surveys recorded snow depth, water equivalent, density, and snow water equivalents from 2 different transects at the GCPEx sites using a snow corer and a GPS equipped snow depth probe.

GHRC has released the GPM Ground Validation Dual Polarization Radiometer GCPEx dataset. This dataset provides brightness temperature measurements at frequencies of 90 GHz (not polarized) and 150 GHz (HV-polarized) from the GPM Cold-season Precipitation Experiment (GCPEx) which occurred in Ontario, Canada, during January and February 2012. This Dual Polarization Radiometer (DPR) is sensitive to particle orientation since it observes the brightness temperature difference between the vertical and horizontal polarization channels at 150 GHz, and it is especially important for the retrievals of particle shape and orientation with polarization observations. DPR also has a high sensitivity to the supercooled liquid water in clouds due to the high-frequency window channels. Even though the netCDF data has regular scans, the browse is only shown at 30 and 150 degrees. Ancillary data is captured for the internal calibration of the instrument.