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Precipitation Analysis at Fine Time Scales Using Multiple Satellites: Real-time and Research Products and ApplicationsQuasi-global precipitation analyses at fine time scales (3-hr) are described. TRMM observations (radar and passive microwave) are used to calibrate polar-orbit microwave observations from SSM/I (and other satellites instruments, including AMSR and AMSU) and geosynchronous IR observations. The individual data sets are then merged using a priority order based on quality to form the Multi-satellite Precipitation Analysis (MPA). Raingauge information is used to help constrain the satellite-based estimates over land. The TRMM standard research product (Version 6 3B-42 of the TRMM products) will be available for the entire TRMM period (January 1998-present) in 2004. The real-time version of this merged product has been produced over the past two years and is available on the U.S. TRMM web site (trmm.gsfc.nasa.gov) at 0.25" latitude-longitude resolution over the latitude range from 5O"N-5O0S. Validation of daily totals indicates good results, with limitations noted in mid-latitude winter over land and regions of shallow, orographic precipitation. Various applications of these estimates are described, including: 1) detecting potential floods in near real-time; 2) analyzing Indian Ocean precipitation variations related to the initiation of El Nino; 3) determining characteristics of the African monsoon; and 4) analysis of diurnal variations.
Document ID
20040161496
Document Type
Conference Paper
Authors
Adler, Robert (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Huffman, George (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Bolvin, David (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Nelkin, Eric (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Curtis, Scott (East Carolina Univ. Greenville, NC, United States)
Pierce, Harold (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 22, 2013
Publication Date
January 1, 2004
Subject Category
Meteorology and Climatology
Meeting Information
8th International Conference on Precipitation(Vancouver)
Distribution Limits
Public
Copyright
Other