HR: 1340h
AN: C33A-0335    [Abstracts]
TI: Sensitivity of Simulated Greenland Ice Sheet Mass Balance Terms to Atmospheric Model Configuration
AU: Shaw, M J
EM: michaejs@cires.colorado.edu
AF: CIRES University of Colorado, 216 UCB, Boulder, CO 80309 United States
AU: * Cassano, J J
EM: cassano@cires.colorado.edu
AF: CIRES University of Colorado, 216 UCB, Boulder, CO 80309 United States
AU: Takeuchi, C S
EM: takeuchc@cires.colorado.edu
AF: CIRES University of Colorado, 216 UCB, Boulder, CO 80309 United States
AB: An ensemble of atmospheric model simulations over the Greenland ice sheet has been conducted as part of a regional atmospheric reanalysis project. The model simulations were performed with the Polar MM5 mesoscale atmospheric model and were conducted in order to determine an appropriate model configuration for use in the regional atmospheric reanalysis. The ensemble consists of members that used multiple model physics options and data assimilation options. Results from this ensemble have been evaluated in terms of ice sheet averaged precipitation and evaporation over Greenland. Differences in the simulated ice sheet average precipitation and evaporation will be presented, and the results will be used to identify the degree of uncertainty in future simulations of ice sheet mass balance terms over the Greenland ice sheet.
DE: 9315 Arctic region
DE: 3337 Numerical modeling and data assimilation
DE: 3349 Polar meteorology
DE: 1827 Glaciology (1863)
SC: Cryosphere [C]
MN: 2004 AGU Fall Meeting