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DOI | 10.1007/s00382-017-4026-x |
Impacts of early autumn Arctic sea ice concentration on subsequent spring Eurasian surface air temperature variations | |
Chen, Shangfeng1; Wu, Renguang1,2 | |
2018-10-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2018 |
卷号 | 51页码:2523-2542 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | This study reveals a close relation between autumn Arctic sea ice change (SIC) in the Laptev Sea-eastern Siberian Sea-Beaufort Sea and subsequent spring Eurasian surface air temperature (SAT) variation. Specifically, more (less) SIC over the above regions in early autumn generally correspond to SAT warming (cooling) over the mid-high latitudes of Eurasia during subsequent spring. Early autumn Arctic SIC affects spring Eurasian SAT via modulating spring Arctic Oscillation (AO) associated atmospheric changes. The meridional temperature gradient over the mid-high latitudes decreases following the Arctic sea ice loss. This results in deceleration of prevailing westerly winds over the mid-latitudes of the troposphere, which leads to increase in the upward propagation of planetary waves and associated Eliassen-Palm flux convergence in the stratosphere over the mid-high latitudes. Thereby, westerly winds in the stratosphere are reduced and the polar vortex is weakened. Through the wave-mean flow interaction and downward propagation of zonal wind anomalies, a negative spring AO pattern is formed in the troposphere, which favors SAT cooling over Eurasia. The observed autumn Arctic SIC-spring Eurasian SAT connection is reproduced in the historical simulation (1850-2005) of the flexible global ocean-atmosphere-land system model, spectral version 2 (FGOALS-s2). The FGOALS-s2 also simulates the close connection between autumn SIC and subsequent spring AO. Further analysis suggests that the prediction skill of the spring Eurasian SAT was enhanced when taking the autumn Arctic SIC signal into account. |
英文关键词 | Autumn Arctic sea ice Surface air temperature Spring Arctic Oscillation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000444947600007 |
WOS关键词 | ASIAN WINTER MONSOON ; ATMOSPHERIC CIRCULATION ; INTERANNUAL VARIATIONS ; WAVE ACTIVITY ; SYSTEM MODEL ; LONG-TERM ; OSCILLATION ; STRATOSPHERE ; TROPOSPHERE ; CLIMATE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/36077 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, Inst Atmospher Phys, Ctr Monsoon Syst Res, Beijing 100029, Peoples R China; 2.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Chen, Shangfeng,Wu, Renguang. Impacts of early autumn Arctic sea ice concentration on subsequent spring Eurasian surface air temperature variations[J]. CLIMATE DYNAMICS,2018,51:2523-2542. |
APA | Chen, Shangfeng,&Wu, Renguang.(2018).Impacts of early autumn Arctic sea ice concentration on subsequent spring Eurasian surface air temperature variations.CLIMATE DYNAMICS,51,2523-2542. |
MLA | Chen, Shangfeng,et al."Impacts of early autumn Arctic sea ice concentration on subsequent spring Eurasian surface air temperature variations".CLIMATE DYNAMICS 51(2018):2523-2542. |
条目包含的文件 | 条目无相关文件。 |
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