GHRC published the GPM Ground Validation NASA S-Band Dual Polarimetric (NPOL) Doppler Radar IFloodS dataset which data was collected during the Iowa Flood Studies (IFloodS) campaign April through June 2013. The data provides Doppler velocity, precipitation rate and radar reflectivity in the Universal Radar Format (UF).
Dr. Rahul Ramachandran, GHRC DAAC Manager, attended the Climate Data Initiative Launch at the White House on March 19. Climate Data Initiative is a new effort bringing together extensive open government data and design competitions with commitments from the private and philanthropic sectors to develop data-driven planning and resilience tools for local communities. NASA is tasked to lead the Climate Data Initiative along with NOAA. Dr. Ramachandran is participating in this initiative as a “Data Wrangler.”
Ken Keiser represented GHRC at the NSF EarthCube End User Communities Stakeholder Workshop held in Washington DC March 18-20. This workshop was held as part of the EarthCube governance pilot activities to get input on how best to represent the interest of the various science stakeholders, including scientists, data providers, educators and other users. Ken was selected to serve as a member of the EarthCube Community Engagement Advisory Board.
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.
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.
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