HR: 15:10h
AN: A52D-05    [PDF]
TI: Coupled Sea Ice Modeling within Global Atmosphere-Ocean Models
AU: * Weatherly, J W
EM: weather@erdc.usace.army.mil
AF: Cold Regions Research and Engineering Lab, 72 Lyme Rd, Hanover, NH 03755 United States
AB: Coupling sea ice models within global atmosphere-ocean models adds several computational and scientific hurdles to the grand challenge of global climate and weather simulation. Producing a truly realistic simulation of polar climate, sea ice cover, thickness and ice drift is still elusive in global models. Problems inherent in the atmosphere, ice, and ocean models all contribute to problems in the sea ice simulations. Numerical stability of ice, atmosphere and ocean models near the poles create limitations in the usable model timestep and grid resolution, so alternate global grids have been implemented in many models. The evolution of coupled ice models from simple slabs to the present dynamic-thermodynamic models with elastic-visco-plastic rheologies, and the future of high-resolution modeling of discrete ice floe interactions will be presented.
DE: 3337 Numerical modeling and data assimilation
DE: 3349 Polar meteorology
DE: 4207 Arctic and Antarctic oceanography
DE: 4540 Ice mechanics and air/sea/ice exchange processes
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting