Abstract
As a part of GPM joint Ground Validation (GV) projects with the US and international partnership, one of the Korea Meteorological Administration (KMA) S-band radar at Gosan, Jeju Island, South Korea has been selected in the Validation Network (VN). It performs the match-up of TRMM Precipitation Radar (PR) data with ground-based radar (GR) during August 2006 to May 2008 for the rain events on criteria of at least 25 % overlap of the PR swath and 25 % or more of the points in the overlap area indicating rain certain in the PR data. 60 events with these criteria during the period have been selected to compare the reflectivity only over 18 dBZ from both radars. Overall comparisons between GR and PR reflectivity roughly 1.37 dBZ low bias over 163,586 points. The results came out good quality and recently asked the TRMM Precipitation Processing System (PPS) to add the site to the daily TRMM site overpass coincidence table (CT) product. Rain rate comparisons between GR and PR show PR over estimate the rain rate in these events.
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