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, Xueqi1,2,3; Zhou, Hui1,2,3,4
2020-06-01
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN2169-9275
Volume125Issue:6Pages:23
Corresponding AuthorZhou, Hui(zhouhui@qdio.ac.cn)
AbstractThe 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.
KeywordNorth Equatorial Current Rossby wave model Sverdrup transport
DOI10.1029/2019JC015895
Indexed BySCI
Language英语
Funding ProjectNSFC[41876009] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000] ; Hundred-Talent Program of Chinese Academy of Sciences[Y9KY0410L]
WOS Research AreaOceanography
WOS SubjectOceanography
WOS IDWOS:000549832900035
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/167955
Collection海洋环流与波动重点实验室
Corresponding AuthorZhou, Hui
Affiliation1.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
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences;  Center for Ocean Mega-Science, Chinese Academy of Sciences
Recommended Citation
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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