GHRC News

The LIS/OTD Climatology collection of ten datasets have been updated to contains data through end of year 2012. This set of data includes the High Resolution Annual Climatology (HRAC), Full Climatology (HRFC), Monthly Climatology (HRMC); and Low Resolution Diurnal Climatology (LRDC), Annual Climatology (LRAC), Annual Diurnal Climatology(LRADC), Full Climatology (LRFC), and Low Resolution Time Series (LRTS), Low Resolution Annual Time Series, and Low Resolution Monthly (LRMTS) Time Series.

GHRC Generates Automated DIF Generation Software

GHRC is modifying its automated DIF generation software at the request of the GCMD by including additional URLs: the REVERB URL, the HyDRO search engine URL, project page, and other published URLS. DIFS are being generated from the database underlying the GHRC search engine HyDRO. GHRC automated its DIF submission to the GCMD beginning in April 2012.

Two Datasets and One Guide Document Published for GCPEX

GHRC has published two new datasets from the GPM Cold-season Precipitation Experiment (GCPEx), which took place in Ontario, Canada, January 15, 2012 through February 29, 2012.

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. Data plots are available in the browse files.
The GPM Ground Validation Environment Canada (EC) Passive Microwave Radiometer and Soil Moisture-Temperature Data GCPEx dataset includes microwave brightness temperatures, snow and soil/snow-air interface (ground surface temperatures), soil surface temperatures, and soil volumetric water content. These data were acquired by a multiple instruments: a passive microwave radiometer, a water content reflectometer, thermistors, soil moisture probe.

GHRC also published the user guide document for the GPM Ground Validation Meteorological Tower Environment Canada GCPEx dataset. This dataset provides temperature, relative humidity, 10m winds, pressure and solar radiation data collected by a suite of standard meteorological instruments attached to a 10m met tower. Browse images are available on-line. The observation station was assembled by Automated Transportable Meteorological Observation Station (ATMOS).

Several GPM Guide Documents Published

GHRC has completed guide documentation for several previously published datasets from GPM Ground Validation campaigns. These datasets are:

GPM Ground Validation Composite Satellite Overpasses GCPEx and GPM Ground Validation Composite Satellite Overpasses MC3E. These composite satellite overpass datasets contain radiometric data from satellites the campaign study area (SSMIS for GCPEx and AQUA for MC3E) matched with other datasets to carry out land surface emissivity studies. The other datasets included the NEXRAD NMQ radar mosaic, the NOAA IMS and the NASA/GMAO MERRA. The NEXRAD NMQ radar mosaic provided knowledge of rain structure and intensity at the time of the overpass, as well as the previous accumulated precipitation prior to the satellite overpass time. The NOAA IMS provided a snow mapping system to identify surface snow or ice cover. The NASA/GMAO MERRA provided data for land and atmospheric reanalysis for background land and atmospheric state needed for microwave radiative transfer calculations. The identified SSMIS and AQUA satellites overpasses passed within 700-km of the central field site. GPM Cold-season Precipitation Experiment (GCPEx) took place in Ontario, Canada, January 15, 2012 through February 29, 2012 and the Midlatitude Continental Convective Clouds Experiment (MC3E) took place in central Oklahoma April 22 - June 5, 2011.
GPM Ground Validation Environment Canada (EC) Micro Rain Radar (MRR) GCPEx. The MRR is a vertically pointing Doppler radar perating at 24 GHz which retrieved quantitative rain rates, drop size distributions, radar reflectivity, and fall velocities on vertical profiles up to several kilometers above the unit during the GPM Cold-season Precipitation Experiment (GCPEx) in Ontario, Canada, winter 2012. The MRR used during GCPEX is the second generation of the instrument manufactured by METEK (URL: http://www.metek.de/product-details/mrr-2.html).
GPM Ground Validation Environment Canada (EC) Visibility Sensor FD12P and Present Weather Detector GCPEx. Data was collected January 15 through March 1, 2012 in Huronia, Canada for the GPM Cold-season Precipitation Experiment (GCPEx). The FD12P combines the functions of a forward scatter visibility meter and a present weather detector and specifies visibility in one and ten minute averages. Weather conditions are specified using codes by National Weather System and the World Meteorological Organization. The dataset also measures the intensity and the amount of both liquid and solid precipitation.
GPM Ground Validation Environment Canada (EC) Web Camera Images GCPEx. Data was collected by fixed outdoor cameras at five sites in Ontario, Canada during the GPM Cold-season Precipitation Experiment (GCPEx) in winter 2012. The AXIS P1343-E network camera has day/night functionality with an automatically controlled IR filter, adapting to both daylight and dark lighting conditions. These images provide visual records of the weather conditions at the site throughout the day.

GHRC Hosts GLM Science Team Meeting

The GHRC developed and hosted a meeting web site for the Annual Geostationary Lightning Mapper (GLM) Science Team meeting at the National Space Science and Technology Center in Huntsville, AL, September 24-26, 2013. The GLM instrument, being developed for the GOES-R satellite, is a follow on to the TRMM Lightning Imaging Sensor (LIS). LIS data are processed and archived at GHRC.

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