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DOI10.1029/2019JD032191
A Model for Turbulence Spectra in the Equilibrium Range of the Stable Atmospheric Boundary Layer
Cheng, Yu1; Li, Qi2; Argentini, Stefania3; Sayde, Chadi4; Gentine, Pierre1
2020-03-16
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
EISSN2169-8996
出版年2020
卷号125期号:5
文章类型Article
语种英语
国家USA; Italy
英文摘要

Stratification can cause turbulence spectra to deviate from Kolmogorov's isotropic -5/3 power law scaling in the universal equilibrium range at high Reynolds numbers. However, a consensus has not been reached with regard to the exact shape of the spectra. Here we propose a shape of the turbulent kinetic energy and temperature spectra in horizontal wavenumber for the equilibrium range that consists of three regimes at small Froude number: the buoyancy subrange, a transition region, and the isotropic inertial subrange through dimensional analysis and substantial revision of previous theoretical approximation. These spectral regimes are confirmed by various observations in the atmospheric boundary layer. The representation of the transition region in direct numerical simulations will require large-scale separation between the Dougherty-Ozmidov scale and the Kolmogorov scale for strongly stratified turbulence at high Reynolds numbers, which is still challenging computationally. In addition, we suggest that the failure of Monin-Obukhov similarity theory in the very stable atmospheric boundary layer is due to the fact that it does not consider the buoyancy scale that characterizes the transition region.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000519602000013
WOS关键词MONIN-OBUKHOV SIMILARITY ; LARGE-EDDY SIMULATIONS ; DIRECT NUMERICAL-SIMULATION ; STRATIFIED TURBULENCE ; SURFACE-LAYER ; REYNOLDS-NUMBER ; LOCAL ISOTROPY ; HEAT-FLUX ; DOME C ; GLOBAL INTERMITTENCY
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/280102
专题气候变化
作者单位1.Columbia Univ, Dept Earth & Environm Engn, New York, NY 10027 USA;
2.Cornell Univ, Sch Civil & Environm Engn, Ithaca, NY 14853 USA;
3.CNR, Inst Atmospher Sci & Climate, Rome, Italy;
4.North Carolina State Univ Raleigh, Dept Biol & Agr Engn, Raleigh, NC USA
推荐引用方式
GB/T 7714
Cheng, Yu,Li, Qi,Argentini, Stefania,et al. A Model for Turbulence Spectra in the Equilibrium Range of the Stable Atmospheric Boundary Layer[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(5).
APA Cheng, Yu,Li, Qi,Argentini, Stefania,Sayde, Chadi,&Gentine, Pierre.(2020).A Model for Turbulence Spectra in the Equilibrium Range of the Stable Atmospheric Boundary Layer.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(5).
MLA Cheng, Yu,et al."A Model for Turbulence Spectra in the Equilibrium Range of the Stable Atmospheric Boundary Layer".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.5(2020).
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