Sensitivity of sea ice and ocean simulations to sea ice salinity in a coupled global climate model  

作　　者：LIU JiPing State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China 

出　　处：《Science China Earth Sciences》2010年第6期911-918,共8页中国科学（地球科学英文版）

基　　金：supported by the Hundred Talents Program of the Chinese Academy of Sciences, National Basic Research Program of China (Grant No. 2006CB403605);National Natural Science Foundation of China (Grant Nos. 40876099, 40930848);High-tech R & D Program (Grant No. 2008AA121704);China Meteorological Administration (Grant No. GYHY200806006)

摘　　要：The impacts of the spatiotemporal variations of sea ice salinity on sea ice and ocean characteristics have not been studied in detail, as the existing climate models neglect or misrepresent this process. To address this issue, this paper formulated a parameterization with more realistic sea ice salinity budget, and examined the sensitivity of sea ice and ocean simulations to the ice salinity variations and associated salt flux into the ocean using a coupled global climate model. Results show that the inclusion of such a parameterization leads to an increase and thickening of sea ice in the Eurasian Arctic and within the ice pack in the Antarctic circumpolar region, and a weakening of the North Atlantic Deep Water and a strengthening of the Antarctic Bottom Water. The atmospheric responses associated with the ice changes were also discussed.The impacts of the spatiotemporal variations of sea ice salinity on sea ice and ocean characteristics have not been studied in detail, as the existing climate models neglect or misrepresent this process. To address this issue, this paper formulated a parameterization with more realistic sea ice salinity budget, and examined the sensitivity of sea ice and ocean simulations to the ice salinity variations and associated salt flux into the ocean using a coupled global climate model. Results show that the inclusion of such a parameterization leads to an increase and thickening of sea ice in the Eurasian Arctic and within the ice pack in the Antarctic circumpolar region, and a weakening of the North Atlantic Deep Water and a strengthening of the Antarctic Bottom Water. The atmospheric responses associated with the ice changes were also discussed.

关 键 词：sea ice SALINITY COUPLED global CLIMATE model ARCTIC and ANTARCTIC 

分 类 号：P731.15[天文地球—海洋科学]