Interannual variations of North Equatorial Current transport in the Pacific Ocean during two types of El Nino

doi:10.1007/s00343-015-4352-y

IOCAS-IR > 海洋环流与波动重点实验室

	Interannual variations of North Equatorial Current transport in the Pacific Ocean during two types of El Nino
	Wu Guoli1,2,3 ; Zhai Fangguo 4; Hu Dunxin 1
	2016-05-01
发表期刊	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
卷号	34 期号:3 页码:585-596
文章类型	Article
摘要	Interannual variations of Pacific North Equatorial Current (NEC) transport during eastern-Pacific El Ninos (EP-El Ninos) and central-Pacific El Ninos (CP-El Ninos) are investigated by composite analysis with European Centre for Medium-Range Weather Forecast Ocean Analysis/Reanalysis System 3. During EP-El Nino, NEC transport shows significant positive anomalies from the developing to decay phases, with the largest anomalies around the mature phase. During CP-El Nino, however, the NEC transport only shows positive anomalies before the mature phase, with much weaker anomalies than those during EP-El Nino. The NEC transport variations are strongly associated with variations of the tropical gyre and wind forcing in the tropical North Pacific. During EP-El Nino, strong westerly wind anomalies and positive wind stress curl anomalies in the tropical North Pacific induce local upward Ekman pumping and westward-propagating upwelling Rossby waves in the ocean, lowering the sea surface height and generating a cyclonic gyre anomaly in the western tropical Pacific. During CP-El Nino, however, strength of the wind and associated Ekman pumping velocity are very weak. Negative sea surface height and cyclonic flow anomalies are slightly north of those during EP-El Nino.
关键词	North Equatorial Current Transport Interannual Variation El Nino
DOI	10.1007/s00343-015-4352-y
收录类别	SCI
语种	英语
WOS记录号	WOS:000375677600019
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.qdio.ac.cn/handle/337002/131047
专题	海洋环流与波动重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.China Univ Petr, Coll Sci, Qingdao 266580, Peoples R China 4.Ocean Univ China, Coll Ocean & Atmospher Sci, Qingdao 266100, Peoples R China
第一作者单位	海洋环流与波动重点实验室
推荐引用方式 GB/T 7714	Wu Guoli,Zhai Fangguo,Hu Dunxin. Interannual variations of North Equatorial Current transport in the Pacific Ocean during two types of El Nino[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2016,34(3):585-596.
APA	Wu Guoli,Zhai Fangguo,&Hu Dunxin.(2016).Interannual variations of North Equatorial Current transport in the Pacific Ocean during two types of El Nino.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,34(3),585-596.
MLA	Wu Guoli,et al."Interannual variations of North Equatorial Current transport in the Pacific Ocean during two types of El Nino".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 34.3(2016):585-596.

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