Interannual variability in the North Pacific meridional overturning circulation

CORC > 海洋研究所 > 中国科学院海洋研究所 > 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
刊名	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
	2013-05-01
卷号	31 期号:3 页码:665-680
关键词	North Pacific Ocean meridional overturning circulation interannual variation temporal and spatial variations
ISSN号	0254-4059
通讯作者	Zhang, QL
中文摘要	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.
英文摘要	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.
学科主题	Marine & Freshwater Biology ; Oceanography
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]	Limnology ; Oceanography
研究领域[WOS]	Marine & Freshwater Biology ; Oceanography
关键词[WOS]	SUBTROPICAL-TROPICAL CELLS ; EQUATORIAL UNDERCURRENT ; EL-NINO ; DECADAL VARIABILITY ; OCEAN ; EXCHANGES
收录类别	SCI
原文出处	10.1007/s00343-013-2072-8
语种	英语
WOS记录号	WOS:000318719700022
公开日期	2014-07-17
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/16416]
专题	海洋研究所_海洋环流与波动重点实验室
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
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.(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.