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GCM Simulation of the Large-Scale North American Monsoon Including Water Vapor Tracer DiagnosticsThe geographic sources of water for the large scale North American monsoon in a GCM (General Circulation Model) are diagnosed using passive constituent tracers of regional water sources (Water Vapor Tracers, WVT). The NASA Data Assimilation Office Finite Volume (FV) GCM was used to produce a 10-year simulation (1984 through 1993) including observed sea surface temperature. Regional and global WVT sources were defined to delineate the surface origin of water for precipitation in and around the North American Monsoon. The evolution of the mean annual cycle and the interannual variations of the monsoonal circulation will be discussed. Of special concern are the relative contributions of the local source (precipitation recycling) and remote sources of water vapor to the annual cycle and the interannual variation of monsoonal precipitation. The relationships between soil water, surface evaporation, precipitation and precipitation recycling will be evaluated.
Document ID
20020073399
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Bosilovich, Michael G.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Walker, Gregory
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Schubert, Siegfried D.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Sud, Yogesh
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Atlas, Robert M.
Date Acquired
August 20, 2013
Publication Date
January 1, 2002
Subject Category
Earth Resources And Remote Sensing
Meeting Information
Meeting: 13th Conference on Hydrology
Location: Orlando, FL
Country: United States
Start Date: January 13, 2002
End Date: January 17, 2002
Sponsors: American Meteorological Society
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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