Distribution of the tropical Pacific surface zonal wind anomaly and its relation with two types of El Nino

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋环流与波动重点实验室

	Distribution of the tropical Pacific surface zonal wind anomaly and its relation with two types of El Nino
	Wang Yang 1,2,3; Chen Jinnian 1,2; Wang Hongna 1,2
刊名	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
	2013-09-01
卷号	31 期号:5 页码:1137-1152
关键词	surface zonal wind anomaly CP (central Pacific) El Nino rotated empirical orthogonal function rotated singular value decomposition zonal convergence physical process
ISSN号	0254-4059
通讯作者	Chen, JN
中文摘要	El Nino events with an eastern Pacific pattern (EP) and central Pacific pattern (CP) were first separated using rotated empirical orthogonal functions (REOF). Lead/lag regression and rotated singular value decomposition (RSVD) analyses were then carried out to study the relation between the surface zonal wind (SZW) anomalies and sea surface temperature (SST) anomalies in the tropical Pacific. A possible physical process for the CP El Nino was proposed. For the EP El Nino, strong westerly anomalies that spread eastward continuously produce an anomalous ocean zonal convergence zone (ZCZ) centered on about 165A degrees W. This SZW anomaly pattern favors poleward and eastward Sverdrup transport at the equator. For the CP El Nino, westerly anomalies and the ZCZ are mainly confined to the western Pacific, and easterly anomalies blow in the eastern Pacific. This SZW anomaly pattern restrains poleward and eastward Sverdrup transport at the equator; however, there is an eastward Sverdrup transport at about 5A degrees N, which favors the warming of the north-eastern tropical Pacific. It is found that the slowness of eastward propagation of subsurface warm water (partly from the downwelling caused by Ekman convergence and the ZCZ) is due to the slowdown of the undercurrent in the central basin, and vertical advection in the central Pacific may be important in the formation and disappearance of the CP El Nino.
英文摘要	El Nino events with an eastern Pacific pattern (EP) and central Pacific pattern (CP) were first separated using rotated empirical orthogonal functions (REOF). Lead/lag regression and rotated singular value decomposition (RSVD) analyses were then carried out to study the relation between the surface zonal wind (SZW) anomalies and sea surface temperature (SST) anomalies in the tropical Pacific. A possible physical process for the CP El Nino was proposed. For the EP El Nino, strong westerly anomalies that spread eastward continuously produce an anomalous ocean zonal convergence zone (ZCZ) centered on about 165A degrees W. This SZW anomaly pattern favors poleward and eastward Sverdrup transport at the equator. For the CP El Nino, westerly anomalies and the ZCZ are mainly confined to the western Pacific, and easterly anomalies blow in the eastern Pacific. This SZW anomaly pattern restrains poleward and eastward Sverdrup transport at the equator; however, there is an eastward Sverdrup transport at about 5A degrees N, which favors the warming of the north-eastern tropical Pacific. It is found that the slowness of eastward propagation of subsurface warm water (partly from the downwelling caused by Ekman convergence and the ZCZ) is due to the slowdown of the undercurrent in the central basin, and vertical advection in the central Pacific may be important in the formation and disappearance of the CP El Nino.
学科主题	Marine & Freshwater Biology ; Oceanography
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]	Limnology ; Oceanography
研究领域[WOS]	Marine & Freshwater Biology ; Oceanography
关键词[WOS]	SOUTHERN-OSCILLATION ; WESTERN PACIFIC ; OCEAN ; TEMPERATURE ; EQUATORIAL ; CLIMATE ; ENSO ; VARIABILITY ; MODEL
收录类别	SCI
原文出处	10.1007/s00343-013-2294-9
语种	英语
WOS记录号	WOS:000324111300022
公开日期	2014-07-17
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/16401]
专题	海洋研究所_海洋环流与波动重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang Yang,Chen Jinnian,Wang Hongna. Distribution of the tropical Pacific surface zonal wind anomaly and its relation with two types of El Nino[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2013,31(5):1137-1152.
APA	Wang Yang,Chen Jinnian,&Wang Hongna.(2013).Distribution of the tropical Pacific surface zonal wind anomaly and its relation with two types of El Nino.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,31(5),1137-1152.
MLA	Wang Yang,et al."Distribution of the tropical Pacific surface zonal wind anomaly and its relation with two types of El Nino".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 31.5(2013):1137-1152.