HR: 09:00h
AN: G31A-05    [PDF]
TI: An Initial Look at GRACE Time-Variable Gravity Results
AU: * Wahr, J
EM: wahr@lemond.colorado.edu
AF: Department of Physics and CIRES, Campus Box 390, University of Colorado, Boulder, CO 80309 United States
AU: Swenson, S
EM: swensosc@lemond.colorado.edu
AF: Department of Physics and CIRES, Campus Box 390, University of Colorado, Boulder, CO 80309 United States
AU: Velicogna, I
EM: isabella@lemond.colorado.edu
AF: Department of Physics and CIRES, Campus Box 390, University of Colorado, Boulder, CO 80309 United States
AB: The GRACE satellite mission, launched in March, 2002, will deliver regular, monthly estimates of the Earth's gravity field during its 5-year lifetime. The time-variable gravity fields derived from these estimates can be used to study such things as changes in the large-scale distribution of water stored on land and in the ocean, mass variations of the polar ice sheets, and post-glacial-rebound in the solid Earth. In this presentation we compare results obtained using the initial time-variable GRACE gravity solutions, with estimates of what the signal is expected to look like as inferred from independent hydrological, oceanographic, etc models. We use this comparison to help assess both the GRACE data and the models.
DE: 1214 Geopotential theory and determination
DE: 1640 Remote sensing
DE: 1836 Hydrologic budget (1655)
SC: Geodesy [G]
MN: 2003 Fall Meeting