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Evolving Improvements to TRMM Ground Validation Rainfall EstimatesThe primary function of the TRMM Ground Validation (GV) Program is to create GV rainfall products that provide basic validation of satellite-derived precipitation measurements for select primary sites. Since the successful 1997 launch of the TRMM satellite, GV rainfall estimates have demonstrated systematic improvements directly related to improved radar and rain gauge data, modified science techniques, and software revisions. Improved rainfall estimates have resulted in higher quality GV rainfall products and subsequently, much improved evaluation products for the satellite-based precipitation estimates from TRMM. This presentation will demonstrate how TRMM GV rainfall products created in a semi-automated, operational environment have evolved and improved through successive generations. Monthly rainfall maps and rainfall accumulation statistics for each primary site will be presented for each stage of GV product development. Contributions from individual product modifications involving radar reflectivity (Ze)-rain rate (R) relationship refinements, improvements in rain gauge bulk-adjustment and data quality control processes, and improved radar and gauge data will be discussed. Finally, it will be demonstrated that as GV rainfall products have improved, rainfall estimation comparisons between GV and satellite have converged, lending confidence to the satellite-derived precipitation measurements from TRMM.
Document ID
20000102595
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Robinson, M. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Kulie, M. S. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Marks, D. A. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Wolff, D. B. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Ferrier, B. S. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Amitai, E. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Silberstein, D. S. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Fisher, B. L. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Wang, J. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Einaudi, Franco
Date Acquired
August 19, 2013
Publication Date
January 1, 2000
Subject Category
Meteorology And Climatology
Meeting Information
Meeting: Frist European Confernce on Radar Meteorology (ERAD)
Location: Bologna,
Country: Italy
Start Date: September 4, 2000
End Date: September 8, 2000
Funding Number(s)
CONTRACT_GRANT: NCC5-143
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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