摘要
Associations between the autumn Arctic sea ice concentration(SIC) and Asian winter temperature are discussed using the singular value decomposition analysis.Results show that in recent 33 years reduced autumn Arctic sea ice is accompanied by Asian winter temperature decrease except in the Tibetan plateau and the Arctic Ocean and the North Pacific Ocean coast.The autumn SIC reduction excites two geopotential height centers in Eurasia and the north Arctic Ocean,which are persistent from autumn to winter.The negative center is in Barents Sea/Kara Sea.The positive center is located in Mongolia.The anomalous winds are associated with geopotential height centers,providing favorable clod air for the Asian winter temperature decreasing in recent 33 years.This relationship indicates a potential long-term outlook for the Asian winter temperature decrease as the decline of the autumn sea ice in the Arctic Ocean is expected to continue as climate warms.
Associations between the autumn Arctic sea ice concentration （SIC） and Asian winter temperature are discussed using the singular value decomposition analysis. Results show that in recent 33 years reduced autumn Arctic sea ice is accompanied by Asian winter temperature decrease except in the Tibetan plateau and the Arctic Ocean and the North Pacific Ocean coast. The autumn SIC reduction excites two geopotential height centers in Eurasia and the north Arctic Ocean, which are persistent from autumn to winter. The negative center is in Barents Sea/Kara Sea. The positive center is located in Mongolia. The anomalous winds are associated with geopotential height centers, providing favorable clod air for the Asian winter temperature decreasing in recent 33 years. This relationship indicates a potential long-term outlook for the Asian winter temperature decrease as the decline of the autumn sea ice in the Arctic Ocean is expected to continue as climate warms.
基金
The Basic Research Operating Funds of First Institute of Oceanography,State Oceanic Administration under contract No.2014T02 and 2014G02
the Chinese Polar Environment Comprehensive Investigation and Assessment Programmes,State Oceanic Administration under contract Nos CHINARE2015-03-01 and CHINARE2015-04-03
the Public science and Technology Research Funds Projects of Ocean under contract No.201205007
