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The performance of a regional coupled ocean/sea ice model in the Nares Strait
Till Rasmussen,Nicolai Kliem
University of Copenhagen
(Abstract received 07/15/2007 for session X)
ABSTRACT
A simulation of the climate around Greenland has been made with HIRHAM (The Danish Meteorological Institute’s atmospheric climate model) for a period of 100 years. The result from this simulation has been used to force a regional coupled ocean and sea ice model (HYCOM+CICE) at the surface. The region considered is Nares Strait, Lincoln Sea and the Baffin bay. The lateral boundaries of HYCOM/CICE are forced with a global model that prescribes the oceanographic data needed. CICE treats both the thermodynamics and the dynamics of the ice. The purpose of this study is to investigate the coupled systems ability to model the hydrography and the sea ice distribution and to investigate the freshwater flux through the Nares Strait. The Nares Strait is expected to be a demanding test area for both the ocean and sea ice model with mixing of different water masses, building up an ice bridge, and formation of polynias. This talk will focus on the flux of water and sea ice through the Nares strait. There are mainly measurements of the hydrographics and these results will be compared to the model result. The sea ice distribution will also be treated.
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2007 LOM Workshop, Bergen, Norway, August 20-22, 2007