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Surface Temperature Assimilation in the Global Land Data Assimilation System (GLDAS)The Global Land Data Assimilation System (GLDAS) is a global land parameterization that uses prescribed meteorology as forcing in order to determine regular gridded land surface states (temperature and moisture) and other properties (e.g. water and heat fluxes). In the present experiment, the assimilation of surface skin temperature is incorporated into the land parameterizations. The meteorological forcing was derived from the Goddard Earth Observing System (GEOS-3) Data Assimilation System (DAS) for the full year of 1998 GLDAS can use several land parameterizations, but here we use the Mosaic land surface model and the Common Land Model (CLM). TOVS surface temperature observations are assimilated into GLDAS. The TOVS observations are less frequent that observations used in previous experiments (ISCCP). The purpose of this presentation is to evaluate the impact of the TOVS assimilation on both Mosaic and CLM. We will especially consider the impact of coarse temporal observations on the assimilation and bias correction.
Document ID
20020050245
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Bosilovich, Michael G.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Radakovich, Jon D.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
daSilva, Arlindo
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Houser, Paul R.
(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: AMS Annual Meeting
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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