气候变化领域集成服务门户(CCPortal): Full-Depth Global Estimates of Ocean Mesoscale Eddy Mixing From Observations and Theory

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DOI	10.1029/2020GL089425
	Full-Depth Global Estimates of Ocean Mesoscale Eddy Mixing From Observations and Theory
	Groeskamp S.; LaCasce J.H.; McDougall T.J.; Rogé M.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:18
英文摘要	Mixing by mesoscale eddies profoundly impacts climate and ecosystems by redistributing and storing dissolved tracers such as heat and carbon. Eddy mixing is parameterized in most numerical models of the ocean and climate. To reduce known sensitivity to such parameterizations, observational estimates of mixing are needed. However, logistical and technological limitations obstruct our ability to measure global time-varying mixing rates. Here, we extend mixing length theory with mean-flow suppression theory, and first surface modes, to estimate mixing from readily available observational-based climatological data, of salinity, temperature, pressure, and eddy kinetic energy at the sea surface. The resulting full-depth global maps of eddy mixing can reproduce the few available direct estimates and confirm the importance of mean-flow suppression of mixing. The results also emphasize the significant effect of eddy surface intensification and its relation to the vertical density stratification. These new insights in mixing dynamics will improve future mesoscale eddy mixing parameterizations. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Climate models; Kinetic energy; Kinetics; Oceanography; Parameterization; Surface waters; Climatological data; Density stratification; Eddy kinetic energy; Global estimate; Mesoscale eddy; Mixing dynamics; Mixing length theories; Technological limitations; Mixing; air-sea interaction; dissolved matter; global perspective; kinetic energy; mesoscale eddy; mixing; salinity; sea surface temperature; stratification; tracer
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/169698
作者单位	NIOZ Royal Netherlands Institute for Sea Research, Texel, Netherlands; Department of Geosciences, University of Oslo, Oslo, Norway; School of Mathematics and Statistics, University of New South Wales, Sydney, NSW, Australia; Climate Change Research Centre, University of New South Wales, Sydney, NSW, Australia
推荐引用方式 GB/T 7714	Groeskamp S.,LaCasce J.H.,McDougall T.J.,et al. Full-Depth Global Estimates of Ocean Mesoscale Eddy Mixing From Observations and Theory[J],2020,47(18).
APA	Groeskamp S.,LaCasce J.H.,McDougall T.J.,&Rogé M..(2020).Full-Depth Global Estimates of Ocean Mesoscale Eddy Mixing From Observations and Theory.Geophysical Research Letters,47(18).
MLA	Groeskamp S.,et al."Full-Depth Global Estimates of Ocean Mesoscale Eddy Mixing From Observations and Theory".Geophysical Research Letters 47.18(2020).