The North Equatorial Current/Undercurrent volume transport and its 40-day variability from a mooring array along 130 degrees E

doi:10.1007/s00343-020-0289-x

IOCAS-IR > 海洋环流与波动重点实验室

	The North Equatorial Current/Undercurrent volume transport and its 40-day variability from a mooring array along 130 degrees E
	Yuan, Xin1,2,3 ; Wang, Qingye 1,3,4; Feng, Junqiao 1,3,4; Hu, Dunxin 1,3,4
	2021-06-14
发表期刊	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	2096-5508
页码	17
通讯作者	Wang, Qingye(wangqy@qdio.ac.cn) ; Hu, Dunxin(dxhu@qdio.ac.cn)
摘要	Traditionally, the estimated volume transport of the North Equatorial Current/Undercurrent (NEC/NEUC) is based on geostrophic equations and/or model results; however, direct observational evidence has not been acquired. We focused on one-year mooring observation data collected along 130 degrees E and calculated the NEC/NEUC volume transport and explore its variability. Results show that the mean NEC and NEUC volume transports calculated from the mean velocity structures in the upper 950 m are 39 Sv and 6 Sv, respectively. Analysis of daily mooring data indicated that the volume transport of the NEC is approximately 52 (+/- 14) Sv and the volume transport of the NEUC is approximately 18 (+/- 13) Sv. A significant 40-day variation existed for the volume transport of both the NEC and NEUC. Overall, the intraseasonal variability (ISV) of the NEC is vertically coherent with that of the NEUC. Observations indicated that the NEUC has three cores centered at approximately 8.5 degrees N (similar to 500 m), 12.5 degrees N (similar to 700 m), and 17.5 degrees N (similar to 900 m), of which the middle core (12.5 degrees N) is the strongest. The 40-day variability of the NEC and NEUC is related to the variability of local wind stress curl anomalies among various Madden-Julian Oscillation (MJO) phases. When local wind field generates a negative (positive) wind stress curl anomaly, a weaker NEC (NEUC) and stronger NEUC (NEC) would occur.
关键词	intraseasonal variability (ISV) North Equatorial Current Undercurrent (NEC NEUC) transport Madden-Julian Oscillation (MJO)
DOI	10.1007/s00343-020-0289-x
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[41576014] ; National Natural Science Foundation of China[41976011]
WOS研究方向	Marine & Freshwater Biology ; Oceanography
WOS类目	Limnology ; Oceanography
WOS记录号	WOS:000661406900007
出版者	SCIENCE PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/176928
专题	海洋环流与波动重点实验室
通讯作者	Wang, Qingye; Hu, Dunxin
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China 4.Pilot Natl Lab Marine Sci & Technol, Lab Ocean & Climate Dynam, Qingdao 266237, Peoples R China
第一作者单位	海洋环流与波动重点实验室; 中国科学院海洋大科学研究中心
通讯作者单位	海洋环流与波动重点实验室; 中国科学院海洋大科学研究中心
推荐引用方式 GB/T 7714	Yuan, Xin,Wang, Qingye,Feng, Junqiao,et al. The North Equatorial Current/Undercurrent volume transport and its 40-day variability from a mooring array along 130 degrees E[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2021:17.
APA	Yuan, Xin,Wang, Qingye,Feng, Junqiao,&Hu, Dunxin.(2021).The North Equatorial Current/Undercurrent volume transport and its 40-day variability from a mooring array along 130 degrees E.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,17.
MLA	Yuan, Xin,et al."The North Equatorial Current/Undercurrent volume transport and its 40-day variability from a mooring array along 130 degrees E".JOURNAL OF OCEANOLOGY AND LIMNOLOGY (2021):17.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Yuan2021_Article_The（6627KB）	期刊论文	出版稿	限制开放	CC BY-NC-SA	浏览