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DOI | 10.1175/JAS-D-18-0375.1 |
An Implicit Algebraic Turbulence Closure Scheme for Atmospheric Boundary Layer Simulation | |
Shi, Xiaoming1,2; Enriquez, Rica Mae3,6; Street, Robert L.3; Bryan, George H.4; Chow, Fotini Katopodes5 | |
2019-11-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2019 |
卷号 | 76期号:11页码:3367-3386 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Turbulence parameterization plays a critical role in the simulation of many weather regimes. For challenging cases such as the stratocumulus-capped boundary layer (SCBL), traditional schemes can produce unrealistic results even when a fine large-eddy-simulation (LES) resolution is used. Here we present an implicit generalized linear algebraic subfilter-scale model (iGLASS) to better represent unresolved turbulence in the simulation of the atmospheric boundary layer, at both standard LES and so-called terra incognita (TI) resolutions. The latter refers to a range of model resolutions where turbulent eddies are only partially resolved, and therefore the simulated processes are sensitive to the representation of unresolved turbulence. iGLASS is based on the truncated conservation equations of subfilter-scale (SFS) fluxes, but it integrates the full equations of the SFS turbulence kinetic energy and potential energy to retain "memory" of the SFS turbulence. Our evaluations suggest iGLASS can perform significantly better than traditional eddy-diffusivity models and exhibit skills comparable to the dynamic reconstruction model (DRM). For a neutral boundary layer case run at LES resolution, the simulation using iGLASS exhibits a wind profile that reasonably matches the similarity-theory solution. For an SCBL case with 5-m vertical resolution, iGLASS maintains more realistic cloud water profiles and boundary layer structure than traditional schemes. The SCBL case is also tested at TI resolution, and iGLASS also exhibits superior performance. iGLASS permits significant backscatter, whereas traditional models allow forward scatter (diffusion) only. As a physics-based approach, iGLASS appears to be a viable alternative for turbulence parameterization. |
英文关键词 | Turbulence Boundary layer Cloud resolving models Large eddy simulations Parameterization Subgrid-scale processes |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000490476800005 |
WOS关键词 | LARGE-EDDY-SIMULATION ; SUBGRID-SCALE TURBULENCE ; STRESS MODELS ; PART I ; CONVECTION ; PARAMETERIZATION ; REPRESENTATION ; CLOUD |
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/188135 |
专题 | 地球科学 |
作者单位 | 1.Hong Kong Univ Sci & Technol, Div Environm & Sustainabil, Hong Kong, Peoples R China; 2.Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn, Hong Kong, Peoples R China; 3.Stanford Univ, Dept Civil & Environm Engn, Stanford, CA 94305 USA; 4.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA; 5.Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA; 6.Geosyntec Consultants Inc, Boca Raton, FL USA |
推荐引用方式 GB/T 7714 | Shi, Xiaoming,Enriquez, Rica Mae,Street, Robert L.,et al. An Implicit Algebraic Turbulence Closure Scheme for Atmospheric Boundary Layer Simulation[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2019,76(11):3367-3386. |
APA | Shi, Xiaoming,Enriquez, Rica Mae,Street, Robert L.,Bryan, George H.,&Chow, Fotini Katopodes.(2019).An Implicit Algebraic Turbulence Closure Scheme for Atmospheric Boundary Layer Simulation.JOURNAL OF THE ATMOSPHERIC SCIENCES,76(11),3367-3386. |
MLA | Shi, Xiaoming,et al."An Implicit Algebraic Turbulence Closure Scheme for Atmospheric Boundary Layer Simulation".JOURNAL OF THE ATMOSPHERIC SCIENCES 76.11(2019):3367-3386. |
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