HR: 16:25h
AN: G23A-11    [Abstracts]
TI: Mass change of the Greenland ice sheet from a climatic-glaciological model and GRACE
AU: * Forsberg, R
EM: rf@kms.dk
AF: Geodynamics Dept, KMS, Rentemestervej 8, Copenhagen NV, DK2400 Denmark
AU: Reeh, N
EM: nr@oersted.dtu.dk
AF: Arctic Technology Centre, Technical University of Denmark, DTU-Oersted, Bygn 348, Lyngby, DK2800 Denmark
AB: We use a model of melting and refreezing of the Greenland ice sheet to estimate the gravitational change signals as a function of increased temperatures on the Greenland ice sheet. The results of the model are compared to actually observed mass changes from analysis of monthly GRACE data. The overall observed GRACE 2002-4 mass change shows good agreement with mass loss estimated from the 1990's NASA PARCA project.
DE: 1827 Glaciology (1863)
DE: 1214 Geopotential theory and determination
DE: 1243 Space geodetic surveys
SC: Geodesy [G]
MN: 2004 AGU Fall Meeting