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GPM Ground Validation Special Sensor Microwave Imager/Sounder (SSMI/S) LPVEx Table of Contents
The SSMI/S LPVEX dataset contains brightness temperature data processed from the NOAA CLASS QC temperature data records for the Light Precipitation Validation Experiment, part of the Global Precipitation Measurement project. Only data with swaths within the area of interest are included. The temporal range of the data includes the LPVEx campaign period (Sep/Oct 2010) and extends through the end of March 2011. CampaignThe Global Precipitation Measurement (GPM) mission Ground Validation (GV) campaign will use a variety of methods for validation of GPM satellite constellation measurements prior to launch of the GPM Core Satellite, which is currently scheduled for July 2013. The validation effort will entail 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 will be measured by very dense rain gauge and disdrometer networks at various field campaign sites. These field campaigns will account for the majority of the effort and resources expended by Global Precipitation Measurement(GPM) mission Ground Validation (GV). These data were collected during The Light Precipitation Evaluation Experiment (LPVEx) field campaign, which took place in September and October 2010 in the Gulf of Finland. The mission was to detect and characterize light rain and evaluate their estimates of rainfall intensity in high latitude, shallow freezing level environments. These data will be used to conduct a comprehensive evaluation of precipitation algorithms for current and future satellite platforms. Instrument DescriptionThe Special Sensor Microwave Imager/Sounder (SSMI/S) combines the channel frequencies of SSMT, SSMT/2, and SSM/I into a single sensor. It measures the thermally emitted radiation from the Earth at 24 channels from 19 to 183 GHz with a swath width of 1700 km. The SSMI/S was initially launched aboard the DMSP F-16 satellite on October 18, 2003. Presently it is aboard the F16, F17 and F18 DMSP satellites and is planned for F19 and F20. File Naming ConventionData are in daily tared files of the form:
which contain swath data files of the form:
where, Data Format The LPVEx SSMI/S data is extracted from the FNMOC Temperature Data Records (TDR) obtained from NOAA/CLASS. More details on the extracted data set are available in LPVEx_TDRs.doc. Documentation on the original TDR SSMI/S is available in ssmis-tdr.pdf. The Fortran program read_SSMIS_LPVEx_summary.f may be utilized to read the files. CitationOur data sets are provided through the NASA Earth Science Data and Information System (ESDIS) Project and the Global Hydrology Resource Center (GHRC) Distributed Active Archive Center (DAAC). GHRC DAAC is one of NASA's Earth Observing System Data and Information System (EOSDIS) data centers that are part of the ESDIS project. ESDIS data are not copyrighted; however, in the event that you publish our data or results derived by using our data, we request that you include an acknowledgment within the text of the article and a citation on your reference list. Examples for general acknowledgments, data set citation in a reference listing, and crediting online web images and information can be found at: http://ghrc.nsstc.nasa.gov/uso/citation.html Contact InformationThe data provider is:
To order these data or for further information, please contact:
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