气候变化领域集成服务门户(CCPortal): Interdecadal modulation of El Niño–tropical North Atlantic teleconnection by the Atlantic multi-decadal oscillation

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DOI	10.1007/s00382-018-4452-4
	Interdecadal modulation of El Niño–tropical North Atlantic teleconnection by the Atlantic multi-decadal oscillation
	Park J.-H.; Li T.
发表日期	2019
ISSN	0930-7575
起始页码	5345
结束页码	5360
卷号	52 期号:2020-09-10
英文摘要	It has been well documented that El Niño (La Niña) is able to induce sea surface temperature (SST) warming (cooling) in the tropical North Atlantic (TNA) in the following spring. Based on the observational analysis, in this study we found that such a lagged El Niño–TNA SST relationship is non-stationary and depends on the phase of Atlantic multi-decadal oscillation (AMO). During the AMO negative phase, the influence of El Niño on TNA-SST becomes intensified and lasts longer till the following summer to fall, and vice versa. We demonstrated that such a modulation is through atmospheric teleconnection change because El Niño during the AMO negative phase tends to have a stronger and eastward-shifting SST warming over the eastern Pacific and the SST warming persists longer throughout late spring. It is further shown that both extratropical and tropical teleconnections are important in causing the non-stationary El Niño effect according to the AMO phase. The extratropical teleconnection is through the Pacific–North America pattern, while the tropical teleconnection is via anomalous Walker circulation. The extratropical teleconnection acts primarily during winter to early spring, while the tropical teleconnection appears more important in spring. If AMO remains in its positive phase in the near future, a weak influence of El Niño on TNA-SST is expected to ensue. © 2018, The Author(s).
英文关键词	Atlantic multi-decadal oscillation (AMO); El Niño; Tropical North Atlantic (TNA)
语种	英语
scopus关键词	Atlantic Multidecadal Oscillation; El Nino; La Nina; sea surface temperature; teleconnection; Walker circulation; Atlantic Ocean; Atlantic Ocean (North)
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/146343
作者单位	International Pacific Research Center and Department of Atmospheric Sciences, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, Honolulu, HI, United States; Key Laboratory of Meteorological Disaster, Ministry of Education (KLME)/Joint International Research Laboratory of Climate and Environmental Change (ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science and Technology, Nanjing, China
推荐引用方式 GB/T 7714	Park J.-H.,Li T.. Interdecadal modulation of El Niño–tropical North Atlantic teleconnection by the Atlantic multi-decadal oscillation[J],2019,52(2020-09-10).
APA	Park J.-H.,&Li T..(2019).Interdecadal modulation of El Niño–tropical North Atlantic teleconnection by the Atlantic multi-decadal oscillation.Climate Dynamics,52(2020-09-10).
MLA	Park J.-H.,et al."Interdecadal modulation of El Niño–tropical North Atlantic teleconnection by the Atlantic multi-decadal oscillation".Climate Dynamics 52.2020-09-10(2019).