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Ongoing Development of NASA's Global Land Data Assimilation SystemNASA's Global Land Data Assimilation System (GLDAS) produces global fields of land surface states (e.g., soil moisture and temperature) and fluxes (e.g., latent heat flux and runoff) by driving offline land surface models with observation-based inputs, using the Land Information System (LIS) software. Since production began in 2001, GLDAS has supported more than 100 scientific investigations and applications. Some examples are GEWEX and NASA Energy and Water Cycle Study (NEWS) global water and energy budget analyses, interpretations of hydrologic data derived from the Gravity Recovery and Climate Experiment (GRACE) satellite mission, and forecast model initiation studies at NOAA and NASA. At the same time, the GLDAS team has continued improve results through the development of new modeling and data assimilation techniques. Here we describe several recent and ongoing innovations. These include global implementation of a runoff routing procedure, GRACE data assimilation, advanced snow cover assimilation, and irrigation modeling.
Document ID
20080037997
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Rodell, Matthew
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kato, Hiroko
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Zaitchik, Ben
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 24, 2013
Publication Date
May 27, 2008
Subject Category
Earth Resources And Remote Sensing
Meeting Information
Meeting: 2008 American Geophysical Union Joint Assembly
Location: Fort Lauderdale, FL
Country: United States
Start Date: May 27, 2008
End Date: May 30, 2008
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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