Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-16-0296.1 |
A Scale-Adaptive Turbulent Kinetic Energy Closure for the Dry Convective Boundary Layer | |
Kurowski, Marcin J.1; Teixeira, Joao | |
2018-02-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES
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ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2018 |
卷号 | 75期号:2页码:675-690 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Apragmatic scale-adaptive turbulent kinetic energy (TKE) closure is proposed to simulate the dry convective boundary layer for a variety of horizontal grid resolutions: from 50m, typical of large-eddy simulation models that use three-dimensional turbulence parameterizations/closures, up to 100km, typical of climate models that use one-dimensional turbulence and convection parameterizations/closures. Since parameterizations/closures using the TKE approach have been frequently used in these two asymptotic limits, a simple method is proposed to merge them with a mixing-length-scale formulation for intermediate resolutions. This new scale-adaptive mixing length naturally increases with increasing grid length until it saturates as the grid length reaches mesoscale-model resolution. The results obtained using this new approach for dry convective boundary layers are promising. The mean vertical profiles of potential temperature and heat flux remain in good agreement for different resolutions. A continuous transition (in terms of resolution) across the gray zone is illustrated through the partitioning between the model-resolved and the subgrid-scale transports as well as by documenting the transition of the subgrid-scale TKE source/sink terms. In summary, a natural and continuous transition across resolutions (from 50m to 100km) is obtained, for dry convection, using exactly the same atmosphericmodel for all resolutions with a simple scale-adaptive mixing-length formulation. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425753300016 |
WOS关键词 | EDDY-DIFFUSIVITY PARAMETERIZATION ; MIXING-LENGTH FORMULATION ; MIXED LAYERS ; MODEL ; ZONE ; REPRESENTATION ; SIMULATION ; TRANSPORT ; RESOLUTION ; FLUX |
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/29606 |
专题 | 地球科学 |
作者单位 | 1.CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA; 2.Univ Calif Los Angeles, Joint Inst Reg Earth Syst Sci & Engn, Los Angeles, CA USA |
推荐引用方式 GB/T 7714 | Kurowski, Marcin J.,Teixeira, Joao. A Scale-Adaptive Turbulent Kinetic Energy Closure for the Dry Convective Boundary Layer[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2018,75(2):675-690. |
APA | Kurowski, Marcin J.,&Teixeira, Joao.(2018).A Scale-Adaptive Turbulent Kinetic Energy Closure for the Dry Convective Boundary Layer.JOURNAL OF THE ATMOSPHERIC SCIENCES,75(2),675-690. |
MLA | Kurowski, Marcin J.,et al."A Scale-Adaptive Turbulent Kinetic Energy Closure for the Dry Convective Boundary Layer".JOURNAL OF THE ATMOSPHERIC SCIENCES 75.2(2018):675-690. |
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