DOI: 10.1002/2016GL067847
论文题名: The latitudinal dependence of the oceanic barotropic eddy kinetic energy and macroturbulence energy transport
作者: Chemke R. ; Kaspi Y.
刊名: Geophysical Research Letters
ISSN: 0094-9251
EISSN: 1944-8982
出版年: 2016
卷: 43, 期: 6 起始页码: 2723
结束页码: 2731
语种: 英语
英文关键词: barotropic inverse energy cascade
; eddy-eddy interactions
; oceanic barotropization
Scopus关键词: Climate models
; Geophysics
; Hydrographic surveys
; Kinetics
; Eddy kinetic energy
; Energy transport
; Geostrophic turbulence
; High-resolution general circulation models
; In-situ measurement
; Inverse energy cascades
; Oceanic barotropic
; Oceanic barotropization
; Kinetic energy
; air-sea interaction
; barotropic motion
; bathymetry
; eddy
; energy balance
; general circulation model
; kinetic energy
; latitude
; oceanic circulation
; satellite data
; spectrum
; turbulence
; wind forcing
英文摘要: Geostrophic turbulence theory predicted already a few decades ago an inverse energy cascade in the barotropic mode, yet there has been limited evidence for it in the ocean. In this study, the latitudinal behavior of the oceanic barotropic energy balance and macroturbulent scales is studied using the ECCO2 (Estimating the Circulation and Climate of the Ocean) state estimate, which synthesizes satellite data and in situ measurements with a high-resolution general circulation model containing realistic bathymetry and wind forcing. It is found that inverse energy cascade occurs at high latitudes, as eddy-eddy interactions spread the conversion of eddy kinetic energy from the baroclinic to the barotropic mode, both upscale and downscale. At these latitudes, the conversion scale of baroclinic eddy kinetic energy and the energy-containing scale follow the most unstable and Rhines scales, respectively. Even though an inverse energy cascade occurs at high latitudes, the energy spectrum follows a steeper slope than the -5/3 slope. Different than classic arguments, the Rossby deformation radius does not follow the baroclinic conversion and most unstable scales. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977974362&doi=10.1002%2f2016GL067847&partnerID=40&md5=04c3579b09f078f363eb0887c26f749c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10214
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot, Israel
Recommended Citation:
Chemke R.,Kaspi Y.. The latitudinal dependence of the oceanic barotropic eddy kinetic energy and macroturbulence energy transport[J]. Geophysical Research Letters,2016-01-01,43(6).