气候变化领域集成服务门户(CCPortal): Influence of winter Arctic sea ice concentration change on the El Niño–Southern Oscillation in the following winter

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DOI	10.1007/s00382-019-05027-1
	Influence of winter Arctic sea ice concentration change on the El Niño–Southern Oscillation in the following winter
	Chen S.; Wu R.; Chen W.; Yu B.
发表日期	2020
ISSN	0930-7575
起始页码	741
结束页码	757
卷号	54 期号:2020-01-02
英文摘要	The present study reveals a close connection between the winter Arctic sea ice concentration (ASIC) change over the Greenland–Barents Seas (GBS) and the El Niño–Southern Oscillation (ENSO) in the following winter. When there is more winter ASIC over the GBS, an El Niño-like sea surface temperature (SST) warming tends to occur in the tropical central-eastern Pacific (TCEP) during the following winter. It is found that the winter ASIC increase over the GBS triggers an atmospheric wave train propagating southeastward from the high latitude Eurasia towards the subtropical North Pacific, with cyclonic wind anomalies over the subtropical North Pacific. A barotropic model experiment with anomalous convergence prescribed around the GBS reproduces reasonably well the atmospheric wave train. The induced spring SST warming and associated anomalous atmospheric heating over the subtropical North Pacific play an essential role in the formation and maintenance of lower-level westerly wind anomalies over the western tropical Pacific. These westerly wind anomalies induce SST warming in the TCEP during the following summer via triggering an eastward propagating equatorial warm Kelvin wave. The summer TCEP SST warming further develops into an El Niño event in the following winter via a Bjerknes-like positive air–sea feedback process. This result suggests that the winter ASIC change around the GBS is a potential predictor of the ENSO events with a lead time of 1 year. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Arctic sea ice; Atmospheric wave train; ENSO; Westerly winds
语种	英语
scopus关键词	ensemble forecasting; Kelvin wave; sea ice; sea surface temperature; wave propagation; westerly; winter; Arctic Ocean; Barents Sea
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145751
作者单位	Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; School of Earth Sciences, Zhejiang University, Hangzhou, China; Climate Research Division, Environment and Climate Change Canada, Toronto, ON, Canada; University of Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Chen S.,Wu R.,Chen W.,等. Influence of winter Arctic sea ice concentration change on the El Niño–Southern Oscillation in the following winter[J],2020,54(2020-01-02).
APA	Chen S.,Wu R.,Chen W.,&Yu B..(2020).Influence of winter Arctic sea ice concentration change on the El Niño–Southern Oscillation in the following winter.Climate Dynamics,54(2020-01-02).
MLA	Chen S.,et al."Influence of winter Arctic sea ice concentration change on the El Niño–Southern Oscillation in the following winter".Climate Dynamics 54.2020-01-02(2020).