Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD028302 |
The Regional Impact of Urban Heat Mitigation Strategies on Planetary Boundary Layer Dynamics Over a Semiarid City | |
Song, Jiyun1,2,3; Wang, Zhi-Hua1; Wang, Chenghao1 | |
2018-06-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:12页码:6410-6422 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; England |
英文摘要 | The rapid urbanization and associated landscape changes strongly modulate heat and moisture transfer processes on the urban surface as well as in the planetary boundary layer (PBL) via urban land-atmosphere interactions. In this study, we employed the mesoscale Weather Research and Forecasting (WRF) model with realistic urban dynamics to assess the effects of two urban landscaping strategies for urban heat mitigation (viz., green roofs and white roofs) on the PBL dynamics for hot summer periods over a semiarid city, Phoenix of Arizona. Our results show that the effects of green roofs and white roofs on PBL dynamics are markedly different at daytime and nighttime. At daytime, both roofing systems reduce the sensible heat flux significantly by 150W/m(2), lower the PBL height by 700m, and decrease the maximum convective available potential energy (CAPE) by 40J/kg over the built terrain. At nighttime, both sensible and latent heat fluxes increase with green roofs by 4 and 6W/m(2), respectively. In contrast, with white roofs, a marginal reduction of sensible heat flux by 4W/m(2) was observed, owing to the remnant effect of daytime cooling. In addition, both roofing systems reduce the CAPE over the urban core but increase the CAPE over the rural surrounding, implying that the use of green or white roofs may potentially enhance the probability of precipitation toward the outskirt of the city. |
英文关键词 | semiarid city planetary boundary layer dynamics urban heat mitigation convective available potential energy green roof white roof |
领域 | 气候变化 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000439508000006 |
WOS关键词 | AVAILABLE POTENTIAL-ENERGY ; GREEN ROOF ; CONVECTIVE PRECIPITATION ; MODEL ; URBANIZATION ; PHOENIX ; SCALE ; COOL ; SENSITIVITY ; ARIZONA |
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/32752 |
专题 | 气候变化 |
作者单位 | 1.Arizona State Univ, Sch Sustainable Engn & Built Environm, Tempe, AZ 85287 USA; 2.Univ Cambridge, Dept Appl Math & Theoret Phys, Ctr Math Sci, Cambridge, England; 3.Univ Cambridge, Dept Architecture, Cambridge, England |
推荐引用方式 GB/T 7714 | Song, Jiyun,Wang, Zhi-Hua,Wang, Chenghao. The Regional Impact of Urban Heat Mitigation Strategies on Planetary Boundary Layer Dynamics Over a Semiarid City[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(12):6410-6422. |
APA | Song, Jiyun,Wang, Zhi-Hua,&Wang, Chenghao.(2018).The Regional Impact of Urban Heat Mitigation Strategies on Planetary Boundary Layer Dynamics Over a Semiarid City.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(12),6410-6422. |
MLA | Song, Jiyun,et al."The Regional Impact of Urban Heat Mitigation Strategies on Planetary Boundary Layer Dynamics Over a Semiarid City".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.12(2018):6410-6422. |
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