Role of atmospheric factors in forcing Arctic sea ice variability

被引:0
作者
Yu Liang [1 ,2 ,3 ,4 ]
Haibo Bi [1 ,2 ,3 ]
Yunhe Wang [1 ,2 ,3 ,4 ]
Zehua Zhang [1 ,2 ,3 ]
Haijun Huang [1 ,2 ,3 ,4 ]
机构
[1] Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences
[2] Laboratory for Marine Geology, Pilot National Laboratory for Marine Science and Technology(Qingdao)
[3] Center for Ocean Mega-Science, Chinese Academy of Sciences
[4] University of Chinese Academy of Sciences
基金
中国国家自然科学基金;
关键词
D O I
暂无
中图分类号
P731.15 [海冰];
学科分类号
0707 ;
摘要
The spatial structure of the Arctic sea ice concentration(SIC) variability and the connection to atmospheric as well as radiative forcing during winter and summer for the 1979–2017 period are investigated. The interannual variability with different spatial characteristics of SIC in summer and winter is extracted using the empirical orthogonal function(EOF) analysis. The present study confirms that the atmospheric circulation has a strong influence on the SIC through both dynamic and thermodynamic processes, as the heat flux anomalies in summer are radiatively forced while those in winter contain both radiative and "circulation-induced" components. Thus,atmospheric fluctuations have an explicit and extensive influence to the SIC through complex mechanisms during both seasons. Moreover, analysis of a variety of atmospheric variables indicates that the primary mechanism about specific regional SIC patterns in Arctic marginal seas are different with special characteristics.
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页码:60 / 72
页数:13
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