Role of atmospheric factors in forcing Arctic sea ice variability

被引：6
|
作者：
Liang, Yu [1 ,2 ,3 ,4 ]
Bi, Haibo [1 ,2 ,3 ]
Wang, Yunhe [1 ,2 ,3 ,4 ]
Zhang, Zehua [1 ,2 ,3 ]
Huang, Haijun [1 ,2 ,3 ,4 ]
机构：
[1] Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
[2] Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Geol, Qingdao 266237, Peoples R China
[3] Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China
[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
ACTA OCEANOLOGICA SINICA | 2020年 / 39卷 / 09期
基金：
中国国家自然科学基金;
关键词：
sea ice concentration; atmospheric circulation; surface radiation; CLIMATE-CHANGE; WINTER CLOUD; TEMPERATURE; OSCILLATION; FEEDBACK; DIPOLE; IMPACT; DRIVEN; OCEAN;
D O I：
10.1007/s13131-020-1629-6
中图分类号：
P7 [海洋学];
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.
引用
收藏
页码：60 / 72
页数：13
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