| DOI: | 10.1002/2016GL070350
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| 论文题名: | Barotropic kinetic energy and enstrophy transfers in the atmosphere |
| 作者: | Chemke R.; Dror T.; Kaspi Y.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8875
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| EISSN: | 1944-8606
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| 出版年: | 2016
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| 卷: | 43, 期:14 | | 起始页码: | 7725
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| 结束页码: | 7734
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| 语种: | 英语
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| 英文关键词: | barotropization of kinetic energy
; geostophic turbulence
; reanalysis data
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| Scopus关键词: | Atmospheric turbulence
; Kinetic energy
; Turbulence
; Baroclinic instability
; Barotropic kinetic energy
; Geostrophic turbulence
; Latitudinal variation
; Midlatitude atmosphere
; National centers for environmental predictions
; Quasi-geostrophic flows
; Reanalysis
; Kinetics
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| 英文摘要: | The midlatitude atmosphere is characterized by turbulent eddies that act to produce a depth-independent (barotropic) mean flow. Using the NCEP (National Centers for Environmental Prediction) Reanalysis 2 data, the latitudinal dependence of barotropic kinetic energy and enstrophy are investigated. Most of the barotropization takes place in the extratropics with a maximum value at midlatitudes, due to the latitudinal variations of the static stability, tropopause height, and sphericity of the planet. Barotropic advection transfers the eddy kinetic energy to the zonal mean flow and thus maintains the barotropic component of the eddy-driven jet. The classic description of geostrophic turbulence exists only at high latitudes, where the quasi-geostrophic flow is supercritical to baroclinic instability; the eddy-eddy interactions carry both the barotropization of eddy kinetic energy upscale to the Rhines scale and the barotropization of eddy potential enstrophy downscale. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84979200763&doi=10.1002%2f2016GL070350&partnerID=40&md5=e1822950b66972810719f5dd53cee207
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/9838
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| 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
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| Recommended Citation: | |
Chemke R.,Dror T.,Kaspi Y.. Barotropic kinetic energy and enstrophy transfers in the atmosphere[J]. Geophysical Research Letters,2016-01-01,43(14).
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