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GPM Ground Validation NEXRAD MC3E (KGLD, KICT, KINX, KTLX, KTWX, KVNX) Table of Contents
The GPM Ground Validation NEXRAD MC3E datasets were collected from six radar sites from April 22, 2011 to June 6, 2011 for the Midlatitude Continental Convective Clouds Experiment (MC3E) which took place in central Oklahoma. Radar sites include: KGLD, KICT, KINX, KTLX, KTWX, and KVNX. The Next Generation Weather Radar (NEXRAD) system comprises 160 Weather Surveillance Radar-1988 Doppler (WSR-88D) sites throughout the United States and select overseas locations. The resulting data includes the base data, called Level-II, and the derived products, called Level-III. This dataset includes Level-II data which contains three meteorological base data quantities: reflectivity, mean radial velocity, and spectrum width. The GPM Ground Validation NEXRAD MC3E data files are available as tarred binary files. CitationThe following example shows how to cite the use of this dataset in a publication. For more information, please see our Citing GHRC DAAC and Data page. Campaign The Global Precipitation Measurement (GPM) mission Ground Validation (GV) campaign used a variety of methods for validation of GPM satellite constellation measurements prior to launch of the GPM Core Satellite, which launched on February 27th, 2014. The validation effort included numerous GPM-specific and joint-agency/international external field campaigns, using state of the art cloud and precipitation observational infrastructure (polarimetric radars, profilers, rain gauges, disdrometers). Surface rainfall was measured by very dense rain gauge and disdrometer networks at various field campaign sites. These field campaigns accounted for the majority of the effort and resources expended by Global Precipitation Measurement (GPM) mission Ground Validation (GV). More information about the GPM mission is available here http://pmm.nasa.gov/GPM. The Midlatitude Continental Convective Clouds Experiment (MC3E) took place in central Oklahoma during the April–June 2011 period. The experiment was a collaborative effort between the U.S. Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Climate Research Facility and the National Aeronautics and Space Administration's (NASA) Global Precipitation Measurement (GPM) mission Ground Validation (GV) program. The field campaign leveraged the unprecedented observing infrastructure currently available in the central United States, combined with an extensive sounding array, remote sensing and in situ aircraft observations, NASA GPM ground validation remote sensors, and new ARM instrumentation purchased with American Recovery and Reinvestment Act funding. The overarching goal was to provide the most complete characterization of convective cloud systems, precipitation, and the environment that has ever been obtained, providing constraints for model cumulus parameterizations and space-based rainfall retrieval algorithms over land that had never before been available. More information about the MC3E campaign is available here http://pmm.nasa.gov/node/301 and here http://campaign.arm.gov/mc3e/. Data from six NEXRAD locations are included in the dataset: Instrument Description NEXRAD is a pulsed Doppler weather radar used to detect and indirectly measure meteorological and hydrological phenomena. There are currently 160 radars positioned throughout the United States and in selected regions around the world. The radars are constantly scanning a few hundred kilometers around each site. The main purpose of NEXRAD is to provide real-time measurements of winds and precipitation, thus improving weather forecasting, specifically the prediction of severe weather events. The transmitter, receiver, and antenna are contained within the radar data acquisition (RDA) component of the system. The RDA derives three parameters, reflectivity, radial velocity, and Doppler spectrum width. Range resolution of the WSR-88D is 1 km for reflectivity and .25 km for velocity and spectrum width; azimuthal resolution is 1 degree for reflectivity, velocity and spectrum width. More information about NEXRAD II data is available on the NOAA website https://www.ncdc.noaa.gov/ and in the journal article A Review of NEXRAD Level II by Huber and Trapp (2009). File Naming ConventionThe GPM Ground Validation NEXRAD MC3E datasets are organized by radar name. Each dataset contains data files with the following naming convention:
Each tar file contains gzipped files with the following naming convention:
The gz file contains a file named with the following convention:
Each dataset also contains browse image files with the following naming convention:
Each tar file contains PNG image files with the following naming convention:
Where, Data Format The GPM Ground Validation NEXRAD MC3E datasets include data files and browse image files. Data files are in binary file format; browse images are in PNG file format. It should be noted that some data files were not include in the NCDC order, and it is presumed they are unavailable.
Huber, M., and Trapp, J, 2009: A Review of NEXRAD Level II: Data, Distribution, and Applications. Journal of Terrestrial Observation, 1, 5 - 15. NEXRAD. NOAA website. https://www.ncdc.noaa.gov/data-access/radar-data/nexrad. Contact InformationTo order these data or for further information, please contact:
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