Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-17-0346.1 |
A Grid-Refinement-Based Approach for Modeling the Convective Boundary Layer in the Gray Zone: Algorithm Implementation and Testing | |
Zhou, Bowen1,2; Xue, Ming1,2,3,4; Zhu, Kefeng1,2 | |
2018-04-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2018 |
卷号 | 75期号:4页码:1143-1161 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | A grid-refinement-based method is implemented in a community atmospheric model to improve the representation of convective boundary layer (CBL) turbulence on gray-zone [i.e., similar to O(1) km] grids. At this resolution, CBL convection is partially resolved and partially subgrid scale (SGS), such that neither traditional mesoscale planetary boundary layer (PBL) schemes nor SGS closures for large-eddy simulations (LESs) are appropriate. The proposed method utilizes two-way interactive nesting to refine the horizontal resolution of the unstable surface layer of the daytime CBL. SGS turbulent mixing in the fine nest and coarse parent grids are parameterized by an LES turbulence closure and a PBL scheme, respectively. The method does not rely on predetermined empirical functions to introduce grid (scale) dependency and in theory works with any PBL scheme. Compared to the stand-alone gray-zone simulation, the proposed approach shows improvements in terms of higher-order statistics, the timing of the onset of resolved convection, and the convective structures. A deficiency of the method exists when the nest domain is limited to the surface layer; the convective structures become gradually contaminated by spurious convection on the parent gray-zone grid. A deeper nest domain alleviates the issue at increased computational costs. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000430749000008 |
WOS关键词 | LARGE-EDDY SIMULATION ; NONHYDROSTATIC ATMOSPHERIC SIMULATION ; PREDICTION SYSTEM ARPS ; WEATHER RESEARCH ; MIXED LAYERS ; ONE-WAY ; TURBULENCE ; WRF ; MESOSCALE ; TRANSITION |
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/29323 |
专题 | 地球科学 |
作者单位 | 1.Nanjing Univ, Minist Educ, Key Lab Mesoscale Severe Weather, Nanjing, Jiangsu, Peoples R China; 2.Nanjing Univ, Sch Atmospher Sci, Nanjing, Jiangsu, Peoples R China; 3.Univ Oklahoma, Ctr Anal & Predict Storms, Norman, OK 73019 USA; 4.Univ Oklahoma, Sch Meteorol, Norman, OK 73019 USA |
推荐引用方式 GB/T 7714 | Zhou, Bowen,Xue, Ming,Zhu, Kefeng. A Grid-Refinement-Based Approach for Modeling the Convective Boundary Layer in the Gray Zone: Algorithm Implementation and Testing[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2018,75(4):1143-1161. |
APA | Zhou, Bowen,Xue, Ming,&Zhu, Kefeng.(2018).A Grid-Refinement-Based Approach for Modeling the Convective Boundary Layer in the Gray Zone: Algorithm Implementation and Testing.JOURNAL OF THE ATMOSPHERIC SCIENCES,75(4),1143-1161. |
MLA | Zhou, Bowen,et al."A Grid-Refinement-Based Approach for Modeling the Convective Boundary Layer in the Gray Zone: Algorithm Implementation and Testing".JOURNAL OF THE ATMOSPHERIC SCIENCES 75.4(2018):1143-1161. |
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