Journal
SCIENCE CHINA-EARTH SCIENCES
Volume 53, Issue 6, Pages 911-918Publisher
SCIENCE PRESS
DOI: 10.1007/s11430-010-0051-x
Keywords
sea ice salinity; coupled global climate model; Arctic and Antarctic
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Funding
- Chinese Academy of Sciences
- National Basic Research Program of China [2006CB403605]
- National Natural Science Foundation of China [40876099, 40930848]
- High-tech R D Program [2008AA121704]
- China Meteorological Administration [GYHY200806006]
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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.
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