The Observed Impacts of the Two Types of El Nino on the North Equatorial Countercurrent in the Pacific Ocean

doi:10.1029/2018GL079273

IOCAS-IR > 海洋环流与波动重点实验室

	The Observed Impacts of the Two Types of El Nino on the North Equatorial Countercurrent in the Pacific Ocean
	Tan, Shuwen 1,2,3; Zhou, Hui 1,2,3,4
	2018-10-16
发表期刊	GEOPHYSICAL RESEARCH LETTERS
ISSN	0094-8276
卷号	45 期号:19 页码:10493-10500
通讯作者	Zhou, Hui([email protected])
摘要	This study investigates the interannual variations in the North Equatorial Counter Current (NECC) associated with the eastern Pacific and the central Pacific types of El Nino. Using observational analysis and ocean simulations, we show that the wind stress anomalies during the two El Nino types are of comparable amplitude but have different spatial structures, which results in significant and distinct variations in the NECC. The NECC shifts southward and intensifies during the developing phase of El Nino, but the variations are confined in the central eastern Pacific for the eastern Pacific type and the western central Pacific for the central Pacific type. These differences can be attributed to modulations in equatorial Kelvin wave and tropical Rossby wave propagation as well as Ekman pumping. Plain Language Summary The North Equatorial Counter Current (NECC) is an eastward flowing surface current that transports a significant amount of water from the warm pool in the western Pacific to the east. Variations in the NECC exert profound effects on the tropical Pacific climate and need to be better understood. This study conducts statistical analyses and ocean model experiments to show that different flavors of El Nino can displace the NECC location and alter its intensity in distinct ways. The cause and the physical mechanisms behind the distinct impacts are identified and verified using specific El Nino events of each flavor. The findings reported in this study contribute to advance our understanding of El Nino diversity and its impacts on the circulation and variability of the Pacific Ocean.
DOI	10.1029/2018GL079273
收录类别	SCI
语种	英语
资助项目	NSFC[41421005]###748; NSFC[41720104008]###815; NSFC[41376032]###816; NSFC[41876009]###817; QNLM[2016ASKJ12]###818; NSFC[41421005]; NSFC[41720104008]; NSFC[41376032]; NSFC[41876009]; QNLM[2016ASKJ12]
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000448656800053
出版者	AMER GEOPHYSICAL UNION
引用统计	被引频次：23[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/156394
专题	海洋环流与波动重点实验室
通讯作者	Zhou, Hui
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol, Qingdao, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Chinese Acad Sci, Qingdao Collaborat Innovat Ctr Marine Sci & Techn, Ctr Ocean Mega Sci, Qingdao, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Tan, Shuwen,Zhou, Hui. The Observed Impacts of the Two Types of El Nino on the North Equatorial Countercurrent in the Pacific Ocean[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(19):10493-10500.
APA	Tan, Shuwen,&Zhou, Hui.(2018).The Observed Impacts of the Two Types of El Nino on the North Equatorial Countercurrent in the Pacific Ocean.GEOPHYSICAL RESEARCH LETTERS,45(19),10493-10500.
MLA	Tan, Shuwen,et al."The Observed Impacts of the Two Types of El Nino on the North Equatorial Countercurrent in the Pacific Ocean".GEOPHYSICAL RESEARCH LETTERS 45.19(2018):10493-10500.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
The Observed Impacts（1839KB）	期刊论文	出版稿	限制开放	CC BY-NC-SA	浏览