전구 해빙모델(CICE)을 이용한 해빙 농도와 해빙 두께 민감도 비교

Abstract

Abstract The impacts of dynamic and thermodynamic schemes used in the Community IceCodE (CICE), the Los Alamos sea ice model, on sea ice concentration, extent and thicknessover the Arctic and Antarctic regions are evaluated. Using the six dynamic and thermody-namic schemes such as sea ice strength scheme, conductivity scheme, albedo type, advectionscheme, shortwave radiation method, and sea ice thickness distribution approximation, the sen-sitivity experiments are conducted. It is compared with a control experiment, which is based onthe fixed atmospheric and oceanic forcing. For sea ice concentration and extent, it is found thatthere are remarkable differences between each sensitivity experiment and the control run overthe Arctic and Antarctic especially in summer. In contrast, there are little seasonal variationsbetween the experiments for sea ice thickness. In summer, the change of the albedo type hasthe biggest influence on the Arctic sea ice concentration, and the Antarctic sea ice concentra-tion has a greater sensitivity to not only the albedo type but also advection scheme. The Arcticsea ice thickness is significantly affected by the albedo type and shortwave radiation method,while the Antarctic sea ice thickness is more sensitive to sea ice strength scheme and advec-tion scheme.Key words: CICE, sea ice modeling, sensitivity test