Interannual variability in the North Pacific meridional overturning circulation

doi:10.1007/s00343-013-2072-8

IOCAS-IR > 海洋环流与波动重点实验室

	Interannual variability in the North Pacific meridional overturning circulation
	Liu Hongwei 1,2,3; Zhang Qilong 1,2; Hou Yijun 1,2; Duan Yongliang1,2,3 ; Zhang, QL
	2013-05-01
发表期刊	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	0254-4059
卷号	31 期号:3 页码:665-680
文章类型	Article
摘要	We analyzed the temporal and spatial variation, and interannual variability of the North Pacific meridional overturning circulation using an empirical orthogonal function method, and calculated mass transport using Simple Ocean Data Assimilation Data from 1958-2008. The meridional streamfunction field in the North Pacific tilts N-S; the Tropical Cell (TC), Subtropical Cell (STC), and Deep Tropical Cell (DTC) may be in phase on an annual time scale; the TC and the STC are out of phase on an interannual time scale, but the interannual variability of the DTC is complex. The TC and STC interannual variability is associated with ENSO (El Nio-Southern Oscillation). The TC northward, southward, upward, and downward transports all weaken in El Nios and strengthen in La Nias. The STC northward and southward transports are out of phase, while the STC northward and downward transports are in phase. Sea-surface water that reaches the middle latitude and is subducted may not completely return to the tropics. The zonal wind anomalies over the central North Pacific, which control Ekman transport, and the east-west slope of the sea level may be major factors causing the TC northward and southward transport interannual variability and the STC northward and southward transports on the interannual time scale. The DTC northward and southward transports decrease during strong El Nios and increase during strong La Nias. DTC upward and downward transports are not strongly correlated with the Nio-3 index and may not be completely controlled by ENSO.; We analyzed the temporal and spatial variation, and interannual variability of the North Pacific meridional overturning circulation using an empirical orthogonal function method, and calculated mass transport using Simple Ocean Data Assimilation Data from 1958-2008. The meridional streamfunction field in the North Pacific tilts N-S; the Tropical Cell (TC), Subtropical Cell (STC), and Deep Tropical Cell (DTC) may be in phase on an annual time scale; the TC and the STC are out of phase on an interannual time scale, but the interannual variability of the DTC is complex. The TC and STC interannual variability is associated with ENSO (El Nio-Southern Oscillation). The TC northward, southward, upward, and downward transports all weaken in El Nios and strengthen in La Nias. The STC northward and southward transports are out of phase, while the STC northward and downward transports are in phase. Sea-surface water that reaches the middle latitude and is subducted may not completely return to the tropics. The zonal wind anomalies over the central North Pacific, which control Ekman transport, and the east-west slope of the sea level may be major factors causing the TC northward and southward transport interannual variability and the STC northward and southward transports on the interannual time scale. The DTC northward and southward transports decrease during strong El Nios and increase during strong La Nias. DTC upward and downward transports are not strongly correlated with the Nio-3 index and may not be completely controlled by ENSO.
关键词	North Pacific Ocean Meridional Overturning Circulation Interannual Variation Temporal And Spatial Variations
学科领域	Marine & Freshwater Biology ; Oceanography
DOI	10.1007/s00343-013-2072-8
URL	查看原文
收录类别	SCI
语种	英语
WOS研究方向	Marine & Freshwater Biology ; Oceanography
WOS类目	Limnology ; Oceanography
WOS记录号	WOS:000318719700022
WOS关键词	SUBTROPICAL-TROPICAL CELLS ; EQUATORIAL UNDERCURRENT ; EL-NINO ; DECADAL VARIABILITY ; OCEAN ; EXCHANGES
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/16416
专题	海洋环流与波动重点实验室
通讯作者	Zhang, QL
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Key Lab Ocean Circulat & Waves KLOCAW, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
第一作者单位	中国科学院海洋研究所; 海洋环流与波动重点实验室
推荐引用方式 GB/T 7714	Liu Hongwei,Zhang Qilong,Hou Yijun,et al. Interannual variability in the North Pacific meridional overturning circulation[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2013,31(3):665-680.
APA	Liu Hongwei,Zhang Qilong,Hou Yijun,Duan Yongliang,&Zhang, QL.(2013).Interannual variability in the North Pacific meridional overturning circulation.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,31(3),665-680.
MLA	Liu Hongwei,et al."Interannual variability in the North Pacific meridional overturning circulation".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 31.3(2013):665-680.

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