| DOI: | 10.1016/j.atmosres.2018.09.015
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| Scopus记录号: | 2-s2.0-85054455144
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| 论文题名: | Turbulent Prandtl number in the atmospheric boundary layer - where are we now? |
| 作者: | Li D.
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| 刊名: | Atmospheric Research
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| ISSN: | 1698095
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| 出版年: | 2019
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| 卷: | 216 | | 起始页码: | 86
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| 结束页码: | 105
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| 语种: | 英语
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| 英文关键词: | Atmospheric boundary layer
; Cospectral budget model
; Thermal stratification
; Turbulent Prandtl number
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| Scopus关键词: | Atmospheric boundary layer
; Atmospheric thermodynamics
; Atmospheric turbulence
; Budget control
; Climate models
; Large eddy simulation
; Reynolds number
; Thermal stratification
; Atmospheric surface layers
; High Reynolds number
; Mean flow properties
; Monin-Obukhov similarity theory
; Thermally stratified
; Turbulence closures
; Turbulent Prandtl number
; Turbulent transports
; Prandtl number
; Equidae
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| 英文摘要: | First-order turbulence closure schemes continue to be work-horse models for weather and climate simulations. The turbulent Prandtl number, which represents the dissimilarity between turbulent transport of momentum and heat, is a key parameter in such schemes. This paper reviews recent advances in our understanding and modeling of the turbulent Prandtl number in high-Reynolds number and thermally stratified atmospheric boundary layer (ABL) flows. Multiple lines of evidence suggest that there are strong linkages between the mean flow properties such as the turbulent Prandtl number in the atmospheric surface layer (ASL) and the energy spectra in the inertial subrange governed by the Kolmogorov theory. Such linkages are formalized by a recently developed cospectral budget model, which provides a unifying framework for the turbulent Prandtl number in the ASL. The model demonstrates that the stability-dependence of the turbulent Prandtl number can be essentially captured with only two phenomenological constants. The model further explains the stability- and scale-dependences of the subgrid-scale Prandtl number in large-eddy simulation. The connections between mean flow properties and microscale energy distributions shed novel insights into the breakdown of Monin-Obukhov similarity theory under strongly stable conditions. © 2018 Elsevier B.V. |
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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/109046
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| Appears in Collections: | 影响、适应和脆弱性
气候变化事实与影响
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作者单位: | Department of Earth and Environment, Boston University, Boston, MA 02215, United States
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| Recommended Citation: | |
Li D.. Turbulent Prandtl number in the atmospheric boundary layer - where are we now?[J]. Atmospheric Research,2019-01-01,216
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