Seasonal Variations of the North Equatorial Current Across the Pacific Ocean

doi:10.1029/2019JC015895

IOCAS-IR > 海洋环流与波动重点实验室

	Seasonal Variations of the North Equatorial Current Across the Pacific Ocean
	Liu, Xueqi 1,2,3; Zhou, Hui 1,2,3,4
	2020-06-01
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN	2169-9275
卷号	125 期号:6 页码:23
通讯作者	Zhou, Hui(zhouhui@qdio.ac.cn)
摘要	The seasonal variations of North Equatorial Current (NEC) axis (Y-CM), intensity (INT), and transport across the Pacific basin are investigated based on altimetry data, Argo data, and ocean reanalysis data. In the western Pacific (WP), the NEC shifts southward/northward when it is intensified/weakened in the first/latter half of the year. However, in the interior Pacific (IP), the INT shows antiphase fluctuations with that in the WP with obvious westward propagations of the meridional shift of theY(CM). In the eastern Pacific (EP), the phase relationship between theY(CM)and INT is opposite to that in the WP with the strengthening/weakening of the NEC being accompanied by a northward/southward shift of its axis. Different locations of the NEC seasonal thermocline departure maxima/minima in the WP, IP, and EP contribute to its distinct seasonal variations in these three basins. One of the new findings is that the seasonal shallowest thermocline generally corresponds to its largest meridional slope in the IP and EP, hence favoring the intensification of the NEC in these two basins, but not the case in the WP. Model experiments by blocking the baroclinic Rossby wave propagations and Ekman pumpings in different basins suggest that the seasonal variations of the NEC in the WP and EP are mainly controlled by the Ekman pumping, while those in the IP are controlled by the joint effect of the local Ekman pumping and the Rossby waves. The Sverdrup theory tends to overestimate the NEC's mean transport.
关键词	North Equatorial Current Rossby wave model Sverdrup transport
DOI	10.1029/2019JC015895
收录类别	SCI
语种	英语
资助项目	NSFC[41876009] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000] ; Hundred-Talent Program of Chinese Academy of Sciences[Y9KY0410L]
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:000549832900035
出版者	AMER GEOPHYSICAL UNION
引用统计	被引频次：15[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/337002/167955
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, Qingdao, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Megasci, 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; 中国科学院海洋大科学研究中心
推荐引用方式 GB/T 7714	Liu, Xueqi,Zhou, Hui. Seasonal Variations of the North Equatorial Current Across the Pacific Ocean[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2020,125(6):23.
APA	Liu, Xueqi,&Zhou, Hui.(2020).Seasonal Variations of the North Equatorial Current Across the Pacific Ocean.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,125(6),23.
MLA	Liu, Xueqi,et al."Seasonal Variations of the North Equatorial Current Across the Pacific Ocean".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 125.6(2020):23.

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