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DOI	10.1007/s00382-019-04756-7
	Effect of El Niño on the response ratio of Hadley circulation to different SST meridional structures
	Feng J.; Li J.; Jin F.-F.; Liu Z.; Zhao S.
发表日期	2019
ISSN	0930-7575
起始页码	3877
结束页码	3891
卷号	53 期号:2020-07-08
英文摘要	The role of El Niño in influencing the response of the Hadley circulation (HC) to different tropical sea surface temperature (SST) meridional structures is investigated over the period 1979–2016. The explained variance of the equatorially asymmetric principal mode of HC variability is enhanced during El Niño events that are characterized by equatorially symmetric El Niño SST anomalies. It is shown that the response of the HC to different SST meridional structures is greatly enhanced in El Niño events; this is because the SST over the Indo-Pacific warm pool (IPWP) shows inhomogeneous warming in El Niño events, with greater values in the southern IPWP. The asymmetric warming over the IPWP is opposite to the climatological meridional structure of the SST over the IPWP, which intensifies the equatorially symmetric variation of SST, and contributes to the enhanced response of the HC to SST. This point is further verified by the suppression of this enhanced response in El Niño events of the HC to SST when the effects of SST over the IPWP are removed, implying that the different warming amplitude within the IPWP during the El Niño events contributes to the enhanced response. The response in La Niña events is also explored, indicating a difference between El Niño and La Niña events. These results may help explain the corresponding variations of the HC during the El Niño events, and highlight the different influences of the El Niño and La Niña events on the response of the HC to SST. © 2019, The Author(s).
英文关键词	Equatorially asymmetric; Equatorially symmetric; Hadley circulation; Indo-Pacific warm pool; Sea surface temperature
语种	英语
scopus关键词	air-sea interaction; amplitude; climatology; El Nino; equatorial dynamics; Hadley cell; meridional circulation; sea surface temperature; warm pool
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/145994
作者单位	College of Global Change and Earth System Science (GCESS), Beijing Normal University, Beijing, China; Key Laboratory of Physical Oceanography–Institute for Advanced Ocean Studies, Ocean University of China, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, Honolulu, HI, United States; Atmospheric Science Program, Department of Geography, Ohio State University, 154 N. Oval Mall, Columbus, OH, United States
推荐引用方式 GB/T 7714	Feng J.,Li J.,Jin F.-F.,et al. Effect of El Niño on the response ratio of Hadley circulation to different SST meridional structures[J],2019,53(2020-07-08).
APA	Feng J.,Li J.,Jin F.-F.,Liu Z.,&Zhao S..(2019).Effect of El Niño on the response ratio of Hadley circulation to different SST meridional structures.Climate Dynamics,53(2020-07-08).
MLA	Feng J.,et al."Effect of El Niño on the response ratio of Hadley circulation to different SST meridional structures".Climate Dynamics 53.2020-07-08(2019).