气候变化领域集成服务门户(CCPortal): Role of the eastern subtropical North Pacific Ocean on the El Niño’s transition processes

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DOI	10.1007/s00382-020-05530-w
	Role of the eastern subtropical North Pacific Ocean on the El Niño’s transition processes
	Yeh S.-W.; Jo H.-S.; Hyun S.-H.; Cai W.; Ham Y.-G.
发表日期	2021
ISSN	0930-7575
卷号	56 期号:2021-03-04
英文摘要	We examine the transition processes of El Niño occurring in 1 year after using observations, a multi-century model simulation and atmospheric general circulation model (AGCM) experiments. One type is characterized by a quick transition from an El Niño event into a La Niña event in the following winter, and the other type involves a slow decay to an almost neutral state or a continuous El Niño event. While both the Indian and the Atlantic Oceans contribute to the El Niño’s transition processes, we further find that sea surface temperature (SST) conditions in the eastern subtropical North Pacific and the associated surface wind anomalies play important roles in determining the different types of El Niño’s transition processes through atmosphere–ocean coupled processes. In particular, northeasterly wind anomalies in the central subtropical North Pacific during the early spring, which is in consequence of atmosphere–ocean coupled processes, contribute to decreasing ocean heat content (OHC) anomalies and strengthening easterly wind anomalies in the central tropical Pacific. These anomalies lead up to a transition into a La Niña event in the following winter. On the contrary, weakening of the northeasterly wind and warm SST anomalies in the eastern subtropical North Pacific during the early spring are conducive to a neutral state or a continuous El Niño event in the subsequent winter. Similar transition processes are also found in a multi-century model simulation. By conducting idealized AGCM experiments, we also show that the anomalous SST in the eastern subtropical North Pacific during El Niño peak season may induce surface wind anomalies in the central tropical Pacific during El Niño onset season. These results provide potential precursors for predicting the occurrence of a La Niña event, a neutral state and an El Niño event 1 year after the occurrence of an El Niño event. © 2021, Springer-Verlag GmbH Germany, part of Springer Nature.
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/183389
作者单位	Department of Marine Sciences and Convergent Technology, Hanyang University, ERICA, Ansan, South Korea; Department of Oceanography, Chonnam National University, Gwangju, South Korea; Operational Systems Development Department, National Institute of Meteorological Sciences, Jeju, South Korea; Key Laboratory of Physical Oceanography/Institute for Advanced Ocean Studies, University of China and Qingdao National Laboratory for Marine Science and Technology, Qingdao, 26603, China; Centre for Southern Hemisphere Oceans Research (CSHOR), CSIRO Oceans and Atmosphere, Hobart, 7004, Australia
推荐引用方式 GB/T 7714	Yeh S.-W.,Jo H.-S.,Hyun S.-H.,等. Role of the eastern subtropical North Pacific Ocean on the El Niño’s transition processes[J],2021,56(2021-03-04).
APA	Yeh S.-W.,Jo H.-S.,Hyun S.-H.,Cai W.,&Ham Y.-G..(2021).Role of the eastern subtropical North Pacific Ocean on the El Niño’s transition processes.Climate Dynamics,56(2021-03-04).
MLA	Yeh S.-W.,et al."Role of the eastern subtropical North Pacific Ocean on the El Niño’s transition processes".Climate Dynamics 56.2021-03-04(2021).