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DOI | 10.1175/JAS-D-16-0228.1 |
Scaling Laws for the Longitudinal Structure Function in the Atmospheric Surface Layer | |
Chamecki, Marcelo1; Dias, Nelson L.2; Salesky, Scott T.3; Pan, Ying4,5 | |
2017-04-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES
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ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2017 |
卷号 | 74期号:4 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Brazil; Canada |
英文摘要 | Scaling laws for the longitudinal structure function in the atmospheric surface layer (ASL) are studied using dimensional analysis and matched asymptotics. Theoretical predictions show that the logarithmic scaling for the scales larger than those of the inertial subrange recently proposed for neutral wall-bounded flows also holds for the shear-dominated ASL composed of weakly unstable, neutral, and all stable conditions (as long as continuous turbulence exists). A 2/3 power law is obtained for buoyancy-dominated ASLs. Data from the Advection Horizontal Array Turbulence Study (AHATS) field experiment confirm these scalings, and they also show that the length scale formed by the friction velocity and the turbulent kinetic energy dissipation rate consistently outperforms the distance from the ground z as the relevant scale in all cases regardless of stability. With this new length scale, the production range of the longitudinal structure function collapses for all measurement heights and stability conditions. A new variable to characterize atmospheric stability emerges from the theory: namely, the ratio between the buoyancy flux and the TKE dissipation rate. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000399333700010 |
WOS关键词 | TURBULENT-BOUNDARY-LAYERS ; STABLY STRATIFIED ATMOSPHERE ; ORDER STRUCTURE FUNCTIONS ; MONIN-OBUKHOV SIMILARITY ; ENERGY-CONTAINING SCALES ; KINETIC-ENERGY ; SHEAR-FLOW ; SPECTRA ; VELOCITY ; REEVALUATION |
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/29230 |
专题 | 地球科学 |
作者单位 | 1.Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA 90095 USA; 2.Univ Fed Parana, Dept Environm Engn, Curitiba, Parana, Brazil; 3.Univ British Columbia, Dept Civil Engn, Vancouver, BC, Canada; 4.Penn State Univ, Dept Meteorol, 503 Walker Bldg, University Pk, PA 16802 USA; 5.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA |
推荐引用方式 GB/T 7714 | Chamecki, Marcelo,Dias, Nelson L.,Salesky, Scott T.,et al. Scaling Laws for the Longitudinal Structure Function in the Atmospheric Surface Layer[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2017,74(4). |
APA | Chamecki, Marcelo,Dias, Nelson L.,Salesky, Scott T.,&Pan, Ying.(2017).Scaling Laws for the Longitudinal Structure Function in the Atmospheric Surface Layer.JOURNAL OF THE ATMOSPHERIC SCIENCES,74(4). |
MLA | Chamecki, Marcelo,et al."Scaling Laws for the Longitudinal Structure Function in the Atmospheric Surface Layer".JOURNAL OF THE ATMOSPHERIC SCIENCES 74.4(2017). |
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