globalchange  > 影响、适应和脆弱性
DOI: 10.1002/2016MS000673
Scopus记录号: 2-s2.0-84979735717
论文题名:
Scaling of the entropy budget with surface temperature in radiative-convective equilibrium
作者: Singh M; S; , O'Gorman P; A
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2016
卷: 8, 期:3
起始页码: 1132
结束页码: 1150
语种: 英语
英文关键词: Atmospheric movements ; Budget control ; Climate models ; Entropy ; Friction ; Surface properties ; Cloud system-resolving models ; Diffusion of water ; Frictional dissipation ; Global climate model ; Moist convection ; Radiative-convective equilibrium ; Surface precipitation ; Surface temperatures ; Atmospheric temperature ; atmospheric modeling ; climate modeling ; convective system ; cooling ; dissipation ; energy budget ; entropy ; equilibrium ; hydrometeorology ; moisture ; precipitation (climatology) ; radiative transfer ; surface temperature ; water vapor
英文摘要: The entropy budget of the atmosphere is examined in simulations of radiative-convective equilibrium with a cloud-system resolving model over a wide range of surface temperatures from 281 to 311 K. Irreversible phase changes and the diffusion of water vapor account for more than half of the irreversible entropy production within the atmosphere, even in the coldest simulation. As the surface temperature is increased, the atmospheric radiative cooling rate increases, driving a greater entropy sink that must be matched by greater irreversible entropy production. The entropy production resulting from irreversible moist processes increases at a similar fractional rate as the entropy sink and at a lower rate than that implied by Clausius-Clapeyron scaling. This allows the entropy production from frictional drag on hydrometeors and on the atmospheric flow to also increase with warming, in contrast to recent results for simulations with global climate models in which the work output decreases with warming. A set of approximate scaling relations is introduced for the terms in the entropy budget as the surface temperature is varied, and many of the terms are found to scale with the mean surface precipitation rate. The entropy budget provides some insight into changes in frictional dissipation in response to warming or changes in model resolution, but it is argued that frictional dissipation is not closely linked to other measures of convective vigor. © 2016. The Authors.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75874
Appears in Collections:影响、适应和脆弱性
气候变化与战略

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作者单位: Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, United States; Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States

Recommended Citation:
Singh M,S,, O'Gorman P,et al. Scaling of the entropy budget with surface temperature in radiative-convective equilibrium[J]. Journal of Advances in Modeling Earth Systems,2016-01-01,8(3)
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