气候变化领域集成服务门户(CCPortal): Shear Instability and Turbulence Within a Submesoscale Front Following a Storm

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DOI	10.1029/2020GL090365
	Shear Instability and Turbulence Within a Submesoscale Front Following a Storm
	Carpenter J.R.; Rodrigues A.; Schultze L.K.P.; Merckelbach L.M.; Suzuki N.; Baschek B.; Umlauf L.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:23
英文摘要	Narrow baroclinic fronts are observed in the surface mixed layer (SML) of the Baltic Sea following an autumn storm. The fronts are subjected to hydrodynamic instabilities that lead to submesoscale and turbulent motions while restratifying the SML. We describe observations from an ocean glider that combines currents, stratification, and turbulence microstructure in a high horizontal resolution (150–300 m) to analyze such fronts. The observations show that SML turbulence is strongly modulated by frontal activity, acting as both source and sink for turbulent kinetic energy. In particular, a direct route to turbulent dissipation within the front is linked to shear instability caused by elevated nongeostrophic shear. The turbulent dissipation of frontal kinetic energy is large enough that it could be a significant influence in the evolution of the front and demonstrates that small-scale turbulence can act as a significant sink of submesoscale kinetic energy. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Kinetics; Ocean currents; Storms; Turbulence; Horizontal resolution; Hydrodynamic instabilities; Shear instability; Small scale turbulence; Surface mixed layers; Turbulent dissipation; Turbulent kinetic energy; Turbulent motion; Kinetic energy; energy dissipation; instability; kinetic energy; mesoscale meteorology; mixed layer; storm surge; turbulence; Atlantic Ocean; Baltic Sea
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/169369
作者单位	Institute of Coastal Research, Helmholtz-Zentrum Geesthacht, Geesthacht, Germany; Leibniz Institute for Baltic Sea Research, Warnemünde, Germany
推荐引用方式 GB/T 7714	Carpenter J.R.,Rodrigues A.,Schultze L.K.P.,et al. Shear Instability and Turbulence Within a Submesoscale Front Following a Storm[J],2020,47(23).
APA	Carpenter J.R..,Rodrigues A..,Schultze L.K.P..,Merckelbach L.M..,Suzuki N..,...&Umlauf L..(2020).Shear Instability and Turbulence Within a Submesoscale Front Following a Storm.Geophysical Research Letters,47(23).
MLA	Carpenter J.R.,et al."Shear Instability and Turbulence Within a Submesoscale Front Following a Storm".Geophysical Research Letters 47.23(2020).