气候变化领域集成服务门户(CCPortal): Widespread Mesoscale Dipoles in the Global Ocean

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DOI	10.1029/2020JC016479
	Widespread Mesoscale Dipoles in the Global Ocean
	Ni Q.; Zhai X.; Wang G.; Hughes C.W.
发表日期	2020
ISSN	21699275
卷号	125 期号:10
英文摘要	Mesoscale eddies are ubiquitous and energetic features in the ocean. Although eddies are known to form dipoles from time to time, it is unclear how often they do so. Using satellite altimetry data, here we show that mesoscale dipoles are surprisingly widespread in the global ocean. About 30–40% of the mesoscale eddies identified in altimeter data are paired up as dipoles, and the percentage is even higher in energetic regions such as the Gulf Stream and the Southern Ocean. Composite analysis involving Argo float data further reveals that these mesoscale dipoles have a relatively uniform three-dimensional structure. We find that the presence of mesoscale dipoles can strongly enhance wind Ekman pumping velocity and lead to deep-reaching vertical motions inside the dipoles via eddy deformation and frontogenesis. Such strong vertical exchanges promoted by mesoscale dipoles may play an important role in regulating the Earth's biogeochemical processes. ©2020. The Authors.
英文关键词	air-sea interaction; dipole; ocean eddies; vertical motions
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186652
作者单位	State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen, China; Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, University of East Anglia, Norwich, United Kingdom; Department of Atmospheric and Oceanic Sciences and Institute of Atmospheric Sciences, Fudan University, Shanghai, China; School of Environmental Sciences, University of Liverpool and National Oceanography Centre, Liverpool, United Kingdom
推荐引用方式 GB/T 7714	Ni Q.,Zhai X.,Wang G.,et al. Widespread Mesoscale Dipoles in the Global Ocean[J],2020,125(10).
APA	Ni Q.,Zhai X.,Wang G.,&Hughes C.W..(2020).Widespread Mesoscale Dipoles in the Global Ocean.Journal of Geophysical Research: Oceans,125(10).
MLA	Ni Q.,et al."Widespread Mesoscale Dipoles in the Global Ocean".Journal of Geophysical Research: Oceans 125.10(2020).