HR: 0800h
AN: GC41A-0390    [Abstracts]
TI: TRMM Precipitation Product Development and Validation for AIS Applications
AU: * Lim, C K
EM: lim@disc.gsfc.nasa.gov
AF: George Mason University, 4400 University Dr., Fairfax, VA 22030 United States
AU: Chiu, L
EM: Chiu@disc.gsfc.nasa.gov
AF: George Mason University, 4400 University Dr., Fairfax, VA 22030 United States
AU: Teng, W
EM: teng@disc.gsfc.nasa.gov
AF: NASA GES DISC DAAC (SSAI), Code 610.2, Greenbelt, MD 20771 United States
AB: For growing needs of knowledge on worldwide food supply, USDA and NASA have been developing an Agricultural Information System (AIS), which can be globally applied. One of the essential input parameter for AIS is precipitation that should be spatially and temporally consistent. TRMM precipitation products can satisfy this condition with relatively low cost than in situ rain rate measurements. For the application of TRMM precipitation to AIS, TRMM algorithms (3G68, 3B42, 3B43) were statistically analyzed and compared with each other and with Climate District, Mesonet, Air Force (for Oklahoma, US) and GPCC (for Oklahoma, US and Argentina sub-region) rain rates in the study. TRMM is available in 0.25 deg resolution, higher than AFWA (0.5 deg), which is currently used in AIS by USDA. TRMM was correlated with GPCC, Mesonet and CD rain rates as well as AFWA or better in some cases. Future study includes comparison between 3-hourly TRMM and 3-hourly US Air Force's Agricultural Meteorology modeling system (AGRMET) precipitation.
UR: http://disc.gsfc.nasa.gov/agriculture/ais_sum.shtml
DE: 1854 Precipitation (3354)
SC: Global Climate Change [GC]
MN: Fall Meeting 2005