inest scales yet attempted with observational data (1 latitude by 1 longitude, or approximately 100x100 km near the equator; every 3 hours). Such a data set is critical for studies of the Earth's hydrology, including weather and climate forecast models, flood/drought analyses, and trends in global rainfall. As well, the approach sets the stage for practical use of NASA's planned Global Precipitation Mission (GPM), which will provide three-hourly high-quality microwave-based precipitation estimates from a constellation of eight low-orbit satellites continuously calibrated by a TRMM follow-on satellite. George J. Huffman, Robert F. Adler and David T. Bolvin will present their research in a poster session on Thursday, Jan. 13, 5-7 p.m., Poster P2.4, as part of the 15th Hydrology Conference.

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Contact: Cynthia O'Carroll
Cynthia.M.OCarroll.1@gsfc.nasa.gov
301-614-5563
NASA/Goddard Space Flight Center
8-Jan-2000

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