Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.landurbplan.2019.02.004 |
Scale dependence of the benefits and efficiency of green and cool roofs | |
Yang, Jiachuan1,2; Bou-Zeid, Elie1 | |
2019-05-01 | |
发表期刊 | LANDSCAPE AND URBAN PLANNING
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ISSN | 0169-2046 |
EISSN | 1872-6062 |
出版年 | 2019 |
卷号 | 185页码:127-140 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China |
英文摘要 | Cool and green roofs are widely adopted measures for curtailing summertime urban heat islands. Existing numerical studies to assess their effectiveness and cooling benefits usually assume an unrealistic 100% coverage across the entire metropolis. This study investigates the scale dependence of the absolute cooling benefits and efficiency (cooling per adapted roof area) of cool and green roofs in a typical summer when they are installed over 25% of building rooftops at local, city, or regional scales. Six major U.S. cities with active climate action plans in different geoclimatic zones are compared through high-resolution simulations using the Weather Research and Forecasting model. The results reveal that reductions in 2-m air temperature over the urban core increase non-linearly with the intervention area, and the benefits of both roof types scale similarly. This scale-dependence of urban core cooling is not universal, but is rather controlled by the shape of metropolitan areas and wind pattern. The siting of mitigation measures hence plays an important role especially under windy conditions, and some urban cores are not able to achieve a noticeable and consistent cooling by retrofitting their own rooftops. Regional-scale deployments of mitigation strategies, on the other hand, yield a more substantial temperature reduction but with a lower efficiency. The scale-dependence of regional cooling efficiency showed remarkable similarity across studied cities, yielding a potentially generalizable power law. The successful resiliency plans for cities should account for the scale dependence and geoclimatic determinants of the achievable cooling, and identify the target neighborhoods of most interest. |
英文关键词 | Cool roof Cooling efficiency Green roof Heat island mitigation Urban planning |
领域 | 资源环境 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000463125400012 |
WOS关键词 | URBAN HEAT-ISLAND ; MITIGATION ; CLIMATE ; CITIES ; PERFORMANCE ; ENERGY ; MODEL ; CITY ; INFRASTRUCTURE ; ADAPTATION |
WOS类目 | Ecology ; Environmental Studies ; Geography ; Geography, Physical ; Regional & Urban Planning ; Urban Studies |
WOS研究方向 | Environmental Sciences & Ecology ; Geography ; Physical Geography ; Public Administration ; Urban Studies |
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/183033 |
专题 | 资源环境科学 |
作者单位 | 1.Princeton Univ, Dept Civil & Environm Engn, Princeton, NJ 08544 USA; 2.Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn, Kowloon, Hong Kong, Peoples R China |
推荐引用方式 GB/T 7714 | Yang, Jiachuan,Bou-Zeid, Elie. Scale dependence of the benefits and efficiency of green and cool roofs[J]. LANDSCAPE AND URBAN PLANNING,2019,185:127-140. |
APA | Yang, Jiachuan,&Bou-Zeid, Elie.(2019).Scale dependence of the benefits and efficiency of green and cool roofs.LANDSCAPE AND URBAN PLANNING,185,127-140. |
MLA | Yang, Jiachuan,et al."Scale dependence of the benefits and efficiency of green and cool roofs".LANDSCAPE AND URBAN PLANNING 185(2019):127-140. |
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