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DOI	10.1029/2020GL087876
	Why Does the CP El Niño less Frequently Evolve Into La Niña than the EP El Niño?
	He S.; Yu J.-Y.; Yang S.; Fang S.-W.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:15
英文摘要	During 1958–2017, the Central-Pacific (CP) El Niño evolved into La Niña less frequently (38%) than the Eastern-Pacific (EP) El Niño (75%). Composite analyses reveal that the reversal of zonal wind anomalies in the tropical western Pacific is the key mechanism for the EP El Niño's transitions to La Niña. This reversal induces oceanic Kelvin waves to promote the La Niña onset. This reversal mechanism is often triggered by the Indo-Pacific teleconnection produced by the EP El Niño. Consequently, the EP El Niño often experiences the transitional evolution. For the CP events, the southward shift of westerly anomalies in the tropical central Pacific is the key mechanism for transitions from El Niño to La Niña via local processes. However, the subtropical teleconnection of the CP El Niño prevents this mechanism from occurring and often causes the nontransitional evolution for the CP events. © 2020. The Authors.
英文关键词	Lanthanum; Tropics; Composite analysis; Eastern pacific; Oceanic Kelvin waves; Reversal mechanism; Teleconnections; Tropical Western Pacific; Zonal wind; Nickel compounds; composite; El Nino; Kelvin wave; La Nina; subtropical region; teleconnection; westerly; zonal wind; Pacific Ocean; Pacific Ocean (West)
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169996
作者单位	School of Atmospheric Sciences, Sun Yat-sen University, Guangzhou, China; Department of Earth System Science, University of California at Irvine, Irvine, CA, United States; Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, Sun Yat-sen University, Guangzhou, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong, China
推荐引用方式 GB/T 7714	He S.,Yu J.-Y.,Yang S.,et al. Why Does the CP El Niño less Frequently Evolve Into La Niña than the EP El Niño?[J],2020,47(15).
APA	He S.,Yu J.-Y.,Yang S.,&Fang S.-W..(2020).Why Does the CP El Niño less Frequently Evolve Into La Niña than the EP El Niño?.Geophysical Research Letters,47(15).
MLA	He S.,et al."Why Does the CP El Niño less Frequently Evolve Into La Niña than the EP El Niño?".Geophysical Research Letters 47.15(2020).