Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-18-0239.1 |
A Unified Eddy-Diffusivity/Mass-Flux Approach for Modeling Atmospheric Convection | |
Suselj, Kay; Kurowski, Marcin J.; Teixeira, Joao | |
2019-08-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES
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ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2019 |
卷号 | 76期号:8页码:2505-2537 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | A fully unified parameterization of boundary layer and moist convection (shallow and deep) is presented. The new parameterization is based on the stochastic multiplume eddy-diffusivity/mass-flux (EDMF) approach, which distinguishes between convective plumes and nonconvective mixing. The convective plumes represent both surface-forced updrafts and evaporatively driven downdrafts. The type of convection (i.e., dry, shallow, or deep) represented by the updrafts is not defined a priori, but rather depends on the near-surface updraft properties and the stochastic interactions between the plumes and the environment through lateral entrainment. Consequently, some updrafts may contribute only to the nonlocal transport within the subcloud layer, while others may condense and form shallow or even deep convection. Such a formulation is void of trigger functions and additional closures typical of modular parameterizations. The updrafts are coupled to relatively simple warm-, mixed-, and ice-phase microphysics. Each precipitating updraft forms a downdraft driven by the evaporation of detrained precipitation. The downdrafts control the development of cold pools near the surface that can invigorate convection. The new parameterization is tested in a single-column model against large-eddy simulations (LESs) for cases representing weakly precipitating marine convection and the diurnal cycle of continental deep convection. The results of these EDMF experiments compare well with the LES reference simulations. In particular, the transitions between the different dominant convection regimes are realistically simulated. |
英文关键词 | Convective parameterization Cumulus clouds Parameterization Single column models Subgrid-scale processes |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000477989200001 |
WOS关键词 | SURFACE-GENERATED CONVECTION ; HIGH-RESOLUTION SIMULATION ; SCALE ELIMINATION MODEL ; BOUNDARY-LAYER CLOUDS ; PDF-BASED MODEL ; SHALLOW CUMULUS ; PART I ; DEEP CONVECTION ; COLD POOLS ; PARAMETERIZATION |
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/185758 |
专题 | 地球科学 |
作者单位 | CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA |
推荐引用方式 GB/T 7714 | Suselj, Kay,Kurowski, Marcin J.,Teixeira, Joao. A Unified Eddy-Diffusivity/Mass-Flux Approach for Modeling Atmospheric Convection[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2019,76(8):2505-2537. |
APA | Suselj, Kay,Kurowski, Marcin J.,&Teixeira, Joao.(2019).A Unified Eddy-Diffusivity/Mass-Flux Approach for Modeling Atmospheric Convection.JOURNAL OF THE ATMOSPHERIC SCIENCES,76(8),2505-2537. |
MLA | Suselj, Kay,et al."A Unified Eddy-Diffusivity/Mass-Flux Approach for Modeling Atmospheric Convection".JOURNAL OF THE ATMOSPHERIC SCIENCES 76.8(2019):2505-2537. |
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