HR: 1330h
AN: G32A-0724    [PDF]
TI: Terrestrial Water Storage Variations From GRACE: Estimation, Validation and Uncertainty
AU: * Famiglietti, J
EM: jfamigli@uci.edu
AF: Dept. of Earth System Science, University of California, Irvine, Irvine, CA 92612 United States
AU: Chen, J
EM: chen@csr.utexas.edu
AF: Center for Space Research, University of Texas at Austin, Austin, TX 78759 United States
AU: Rodell, M
EM: Matthew.Rodell@nasa.gov
AF: Hydrological Science Branch, NASA Goddard Space Flight Center, Greenbelt, MD 20771 United States
AU: Seo, K
EM: kiweon@speer.geo.utexas.edu
AF: Dept. of Geological Sciences, University of Texas at Austin, Austin, TX 78712 United States
AU: Wilson, C
EM: crwilson@mail.utexas.edu
AF: Dept. of Geological Sciences, University of Texas at Austin, Austin, TX 78712 United States
AB: In this presentation we discuss our plans for producing monthly estimates of basin-scale changes in total water storage from GRACE observations of the time-variable gravity field. Monthly changes in total water storage (snow, surface waters, soil water and groundwater) will be estimated for several large ($>$200,000 km$^{2}$) watersheds around the globe. Water storage change estimates will be compared to those derived from observations as well as to those produced from assimilating land models such as the Global Land Data Assimilation System (GLDAS). Uncertainty estimates will incorporate errors due to instrument limitations, atmospheric mass removal, post-glacial rebound, basin leakage and aliasing of high-frequency hydrologic signals. The importance of GRACE-derived water storage changes in hydrology and Earth system science will be highlighted.
DE: 1200 GEODESY AND GRAVITY
DE: 1640 Remote sensing
DE: 1655 Water cycles (1836)
DE: 1833 Hydroclimatology
SC: Geodesy [G]
MN: 2003 Fall Meeting