globalchange  > 影响、适应和脆弱性
DOI: 10.1002/2014MS000359
Scopus记录号: 2-s2.0-85027936772
论文题名:
WTG cloud modeling with spectral decomposition of heating
作者: Herman M; J; , Raymond D; J
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2014
卷: 6, 期:4
起始页码: 1121
结束页码: 1140
语种: 英语
英文关键词: Boundary layers ; Numerical models ; Thermal gradients ; Cloud resolving model ; Cloud system-resolving models ; Conventional schemes ; Multiple equilibrium ; Relaxation time scale ; Spectral decomposition ; Tropical convection ; Weak temperature gradient approximations ; Temperature ; accuracy assessment ; boundary layer ; cloud cover ; phase equilibrium ; temperature gradient ; vertical profile
英文摘要: A modified form of the relaxed weak temperature gradient (WTG) approximation is described and implemented in a cloud resolving model. In this scheme, the vertical heating profile is spectrally decomposed into normal modes. The relaxation time scale of each mode is set proportional to the corresponding vertical wave number of the mode, as would be expected if gravity waves were responsible for the relaxation. Buoyancy adjustment exhibits greater realism than in conventional relaxed WTG, with nonlocal adjustment occurring as in the weak pressure gradient model of Romps. Furthermore, no boundary layer taper is needed when using the improved scheme. Experiments from the literature are revisited; mass flux profiles are smoother and multiple equilibrium experiments are more robust. Key Points: A spectral form of the weak temperature-gradient approximation is introduced The spectral formulation is more accurate than the conventional scheme WTG experiments should be more robust when using this scheme © 2014. The Authors.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/76105
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: Physics Department and Geophysical Research Center, New Mexico Tech, Socorro, NM, United States

Recommended Citation:
Herman M,J,, Raymond D,et al. WTG cloud modeling with spectral decomposition of heating[J]. Journal of Advances in Modeling Earth Systems,2014-01-01,6(4)
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