Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.4903 |
Introducing and evaluating a new building-height categorization based on the fractal dimension into the coupled WRF/urban model | |
Li, Yuhuan1; Miao, Shiguang1; Chen, Fei2,3; Liu, Yonghong4 | |
2017-06-15 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2017 |
卷号 | 37期号:7 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Model simulations of the boundary-layer structures and summer rainfall in cities are heavily affected by urban morphology, which are defined by a number of urban canopy parameters (UCPs). In the default Weather Research Forecasting (WRF) model/urban canopy model (UCM) system, UCPs are specified in a lookup table as function of three different urban land-use types, which cannot totally capture the heterogeneity in building heights (BHs). In this article, a method of using a fractal dimension (FD) was developed to define new categories of urban BH for characterizing the vertical urban canopy morphology. Combined with the default three urban land-use categories in WRF/UCM system, the BH categorization improves the description of the urban canopy characteristics. WRF/UCM multi-day simulations showed that the new method produced lower air temperatures and higher 10-m wind speeds in densely urbanized areas in Beijing, and performed better in capturing the temperature variations and spatial distributions of the 10-m wind speed. A rainfall case was also simulated by WRF/UCM using the two methods, and the new BH method yielded a more accurate simulation of precipitation. The difference of 24-h total precipitation between WRF simulations using the two methods can reach 40 mm, indicating a high sensitivity to urban surface representations. Results showed that the introduction of FD-based BH categorization is a simple and yet efficient way to improve WRF/UCM performance in the areas where detailed information on BHs is not available. |
英文关键词 | fractal dimension urban canopy parameters building height WRF/UCM modelling system |
领域 | 气候变化 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000404851400005 |
WOS关键词 | URBAN CANOPY MODEL ; PEARL RIVER DELTA ; HEAT-ISLAND ; PARAMETERIZATION ; SENSITIVITY ; SIMULATION ; EXPANSION ; RAINFALL ; WEATHER ; SYSTEM |
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/37483 |
专题 | 气候变化 |
作者单位 | 1.China Meteorol Adm, Inst Urban Meteorol, 55 Beiwaxili Rd, Beijing 100089, Peoples R China; 2.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA; 3.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing, Peoples R China; 4.Beijing Meteorol Serv, Municipal Climate Ctr, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Li, Yuhuan,Miao, Shiguang,Chen, Fei,et al. Introducing and evaluating a new building-height categorization based on the fractal dimension into the coupled WRF/urban model[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2017,37(7). |
APA | Li, Yuhuan,Miao, Shiguang,Chen, Fei,&Liu, Yonghong.(2017).Introducing and evaluating a new building-height categorization based on the fractal dimension into the coupled WRF/urban model.INTERNATIONAL JOURNAL OF CLIMATOLOGY,37(7). |
MLA | Li, Yuhuan,et al."Introducing and evaluating a new building-height categorization based on the fractal dimension into the coupled WRF/urban model".INTERNATIONAL JOURNAL OF CLIMATOLOGY 37.7(2017). |
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