气候变化领域集成服务门户(CCPortal): Fluctuations of the Atlantic North Equatorial Undercurrent and Associated Changes in Oxygen Transports

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DOI	10.1029/2020GL088350
	Fluctuations of the Atlantic North Equatorial Undercurrent and Associated Changes in Oxygen Transports
	Burmeister K.; Luebbecke J.F.; Brandt P.; Claus M.; Hahn J.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:13
英文摘要	Although the core velocity of the Atlantic North Equatorial Undercurrent (NEUC) is low (0.1−0.3 m s−1), it has been suggested to act as an important oxygen supply route towards the oxygen minimum zone in the eastern tropical North Atlantic. For the first time, the intraseasonal to interannual NEUC variability and its impact on oxygen are investigated based on shipboard and moored velocity observations around 5°N, 23°W. In contrast to previous studies that were mainly based on models or hydrographic data, we find hardly any seasonal cycle of NEUC transports in the central Atlantic. The NEUC transport variability is instead dominated by sporadic intraseasonal events. Only some of these events are associated with high oxygen levels suggesting an occasional eastward oxygen supply by NEUC transport events. Nevertheless, they likely contribute to the local oxygen maximum in the mean shipboard section along 23°W at the NEUC core position. © 2020. The Authors.
英文关键词	Hydrographic surveys; Ships; Central Atlantic; Eastern tropical north atlantic; Equatorial undercurrents; Hydrographic data; Oxygen minimum zone; Oxygen transport; Transport events; Transport variability; Oxygen supply; annual variation; oceanic current; oxygen minimum layer; seasonal variation; shipborne measurement; Atlantic Ocean; Atlantic Ocean (Central); Atlantic Ocean (North)
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170163
作者单位	GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany; Now at SAMS, Scottish Association for Marine Science, Oban, United Kingdom; Christian-Albrechts-Universität zu Kiel, Kiel, Germany
推荐引用方式 GB/T 7714	Burmeister K.,Luebbecke J.F.,Brandt P.,et al. Fluctuations of the Atlantic North Equatorial Undercurrent and Associated Changes in Oxygen Transports[J],2020,47(13).
APA	Burmeister K.,Luebbecke J.F.,Brandt P.,Claus M.,&Hahn J..(2020).Fluctuations of the Atlantic North Equatorial Undercurrent and Associated Changes in Oxygen Transports.Geophysical Research Letters,47(13).
MLA	Burmeister K.,et al."Fluctuations of the Atlantic North Equatorial Undercurrent and Associated Changes in Oxygen Transports".Geophysical Research Letters 47.13(2020).