Geostrophic Circulation in the Tropical North Pacific Ocean Based on Argo Profiles

doi:10.1175/JPO-D-12-0230.1

IOCAS-IR > 海洋环流与波动重点实验室

	Geostrophic Circulation in the Tropical North Pacific Ocean Based on Argo Profiles
	Yuan, Dongliang1,2,3 ; Zhang, Zhichun 1,2,4,5; Chu, Peter C.6; Dewar, William K.7; Yuan, DL (reprint author), Chinese Acad Sci, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Peoples R China.
	2014-02-01
发表期刊	JOURNAL OF PHYSICAL OCEANOGRAPHY
卷号	44 期号:2 页码:558-575
文章类型	Article
摘要	Absolute geostrophic currents in the North Pacific Ocean are calculated from the newly gridded Argo profiling float data using the P-vector method for the period of 2004-11. The zonal geostrophic currents based on the Argo profile data are found to be stronger than those based on the traditional World Ocean Atlas 2009 (WOA09) data. A westward mean geostrophic flow underneath the North Equatorial Countercurrent is identified using the Argo data, which is evidenced by sporadic direct current measurements and geostrophic calculations in history. This current originates east of the date line and transports more than 4 x 10(6) m(3) s(-1) of water westward in the subsurface northwestern tropical Pacific Ocean. The authors name this current the North Equatorial Subsurface Current. The transport in the geostrophic currents is compared with the Sverdrup theory and found to differ significantly in several locations. Analyses have shown that errors of wind stress estimation cannot account for all of the differences. The largest differences are found in the area immediately north and south of the bifurcation latitude of the North Equatorial Current west of the date line and in the recirculation area of the Kuroshio and its extension, where nonlinear activities are vigorous. It is, therefore, suggested that the linear dynamics of the Sverdrup theory is deficient in explaining the geostrophic transport of the tropical northwestern Pacific Ocean.
关键词	Ocean Dynamics Circulation/dynamics Nonlinear Dynamics Ocean Circulation Transport
学科领域	Oceanography
DOI	10.1175/JPO-D-12-0230.1
收录类别	SCI
语种	英语
WOS记录号	WOS:000331024500009
引用统计	被引频次：43[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/337002/23927
专题	海洋环流与波动重点实验室
通讯作者	Yuan, DL (reprint author), Chinese Acad Sci, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Peoples R China.
作者单位	1.Chinese Acad Sci, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 3.Qingdao Collaborat Innovat Ctr Marine Sci & Techn, Qingdao, Peoples R China 4.Zhejiang Univ, Dept Ocean Sci & Engn, Hangzhou 310003, Zhejiang, Peoples R China 5.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Peoples R China 6.Naval Postgrad Sch, Dept Oceanog, Naval Ocean Anal & Predict Lab, Monterey, CA USA 7.Florida State Univ, Dept Ocean Atmosphere & Earth Sci, Tallahassee, FL 32306 USA
第一作者单位	海洋环流与波动重点实验室; 中国科学院海洋研究所
推荐引用方式 GB/T 7714	Yuan, Dongliang,Zhang, Zhichun,Chu, Peter C.,et al. Geostrophic Circulation in the Tropical North Pacific Ocean Based on Argo Profiles[J]. JOURNAL OF PHYSICAL OCEANOGRAPHY,2014,44(2):558-575.
APA	Yuan, Dongliang,Zhang, Zhichun,Chu, Peter C.,Dewar, William K.,&Yuan, DL .(2014).Geostrophic Circulation in the Tropical North Pacific Ocean Based on Argo Profiles.JOURNAL OF PHYSICAL OCEANOGRAPHY,44(2),558-575.
MLA	Yuan, Dongliang,et al."Geostrophic Circulation in the Tropical North Pacific Ocean Based on Argo Profiles".JOURNAL OF PHYSICAL OCEANOGRAPHY 44.2(2014):558-575.

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