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GPM Ground Validation NCAR Cloud Microphysics Particle Probes Guide released
GPM Constellation

GHRC has released a Guide supporting two similar datasets for the GCPEX and MC3E campaigns: GPM Ground Validation NCAR Cloud Microphysics Particle Probes. Both datasets provide data from three instrument probes carried aboard the University of North Dakota (UND) Cessna Citation aircraft. These probes, the 2D-C, Cloud Imaging Probe (CIP) and High Volume Precipitation Spectrometer (HVPS-3), collected particle size distributions and particle images which were processed by NCAR. Derived parameters include ice water content, liquid water content, and total number concentration. The GPM Cold-season Precipitation Experiment (GCPEx) took place in Ontario, Canada during the winter season of 2011-2012, and the Midlatitude Continental Convective Clouds Experiment (MC3E) occurred in central Oklahoma during the April-June 2011.

GCPEx Dual Polarization Radiometer dataset released
GCPEx logo

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.

 

Two snow-related GCPEX datasets released
GCPEX

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 represented at CODATA meeting
CODATA

Dr. Sara Graves represented the GHRC at the International Council for Science: Committee on Data for Science and Technology (CODATA) Executive Committee meeting at the Israel Academy of Sciences and Humanities in Jerusalem, March 3-7. Dr. Graves is the Secretary General of CODATA.

GHRC represented at HIRAD meeting
HIRAD logo

GHRC Operations Manager Helen Conover, Data Management Group lead Marilyn Drewry, User Services lead Sherry Harrison, and student assistant Kaylin Bugbee (all University of Alabama in Huntsville) attended the HIRAD instrument team meeting in Huntsville, AL, to discuss data, metadata and documentation requirements for submitting data to the DAAC. HIRAD is one of the instruments in the Hurricane and Severe Storm Sentinel, a Venture mission, to be archived at GHRC. HIRAD data from the 2010 Genesis and Rapid Intensification Processes (GRIP) field campaign is already at the DAAC.

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