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Global Precipitation Measurement (GPM) Ground Validation: Plans and PreparationsThe Global Precipitation Measurement (GPM) program is an international partnership led by the National Aeronautics and Space Administration (NASA) and the Japan Aerospace Exploration Agency (JAXA). GPM will improve climate, weather, and hydro-meteorological forecasts through more frequent and more accurate measurement of precipitation across the globe. This paper describes the concept, the planning, and the preparations for Ground Validation within the GPM program. Ground Validation (GV) plays an important role in the program by investigating and quantitatively assessing the errors within the satellite retrievals. These quantitative estimates of retrieval errors will assist the scientific community by bounding the errors within their research products. The two fundamental requirements of the GPM Ground Validation program are: (1) error characterization of the precipitation retrievals and (2) continual improvement of the satellite retrieval algorithms. These two driving requirements determine the measurements, instrumentation, and location for ground observations. This paper outlines GV plans for estimating the systematic and random components of retrieval error and for characterizing the spatial p d temporal structure of the error and plans for algorithm improvement in which error models are developed and experimentally explored to uncover the physical causes of errors within the retrievals. This paper discusses NASA locations for GV measurements as well as anticipated locations from international GPM partners. NASA's primary locations for validation measurements are an oceanic site at Kwajalein Atoll in the Republic of the Marshall Islands and a continental site in north-central Oklahoma at the U.S. Department of Energy's Atmospheric Radiation Measurement Program site.
Document ID
20040171445
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Schwaller, M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Bidwell, S.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Durning, F. J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Smith, E.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 22, 2013
Publication Date
June 1, 2004
Subject Category
Meteorology And Climatology
Meeting Information
Meeting: 8th International Precipitation Conference
Location: Vancouver
Country: Canada
Start Date: August 9, 2004
End Date: August 11, 2004
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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