气候变化领域集成服务门户(CCPortal): A Model for Turbulence Spectra in the Equilibrium Range of the Stable Atmospheric Boundary Layer

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DOI	10.1029/2019JD032191
	A Model for Turbulence Spectra in the Equilibrium Range of the Stable Atmospheric Boundary Layer
	Cheng Y.; Li Q.; Argentini S.; Sayde C.; Gentine P.
发表日期	2020
ISSN	2169897X
卷号	125 期号:5
英文摘要	Stratification can cause turbulence spectra to deviate from Kolmogorov's isotropic (Formula presented.) 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. © 2020. American Geophysical Union. All Rights Reserved.
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186129
作者单位	Department of Earth and Environmental Engineering, Columbia University, New York, NY, United States; School of Civil and Environmental Engineering, Cornell University, Ithaca, NY, United States; Institute of Atmospheric Sciences and Climate, CNR, Rome, Italy; Department of Biological and Agricultural Engineering, North Carolina State University at Raleigh, Raleigh, NC, United States
推荐引用方式 GB/T 7714	Cheng Y.,Li Q.,Argentini S.,et al. A Model for Turbulence Spectra in the Equilibrium Range of the Stable Atmospheric Boundary Layer[J],2020,125(5).
APA	Cheng Y.,Li Q.,Argentini S.,Sayde C.,&Gentine P..(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 Y.,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).