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DOI | 10.1088/1748-9326/ab2740 |
Enhanced sensitivity of the urban heat island effect to summer temperatures induced by urban expansion | |
Gao, Zhen1,2; Hou, Ying1; Chen, Weiping1 | |
2019-09-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2019 |
卷号 | 14期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | A suitable thermal environment is important for the economy, society and public health in urban areas. However, the understanding of the relationship between the urban heat island (UHI) effect and background temperature (T-UHI) is very limited. In this study, the UHI effect induced by the urbanization of the megacity Beijing was investigated using the weather research and forecasting model. Urban expansion and heatwaves both considerably enhanced the UHI effect over urban areas in summer. The strengthened UHI effect during the heatwave period can be clearly explained by the positive sensitivity of T-UHI. The urban expansion increased the sensitivity of T-UHI from 0.0207 degrees C degrees C-1 in 2000 to 0.0569 degrees C degrees C-1 in 2010 in the daytime and from 0.0715 degrees C degrees C-1 in 2000 to 0.0995 degrees C degrees C-1 in 2010 at nighttime, thus resulting in a much stronger UHI effect mainly by increasing the difference between the latent heat flux and sensible heat flux. This enhanced sensitivity may exacerbate the urban heat stress in the situation of further urban expansion and background climate warming. Our results suggest that the sensitivity of T-UHI is a meaningful indicator to assess the urban thermal environment change and support the designing of heat mitigation strategies in urban planning. |
英文关键词 | urban heat island urban expansion heatwave sensitivity surface energy balance |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000482610300001 |
WOS关键词 | LAND-SURFACE TEMPERATURE ; CLIMATE-CHANGE ; SPATIAL CHARACTERISTICS ; COVER CHANGE ; HUMAN HEALTH ; URBANIZATION ; WAVES ; IMPACT ; MORTALITY ; MODEL |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/186633 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Gao, Zhen,Hou, Ying,Chen, Weiping. Enhanced sensitivity of the urban heat island effect to summer temperatures induced by urban expansion[J]. ENVIRONMENTAL RESEARCH LETTERS,2019,14(9). |
APA | Gao, Zhen,Hou, Ying,&Chen, Weiping.(2019).Enhanced sensitivity of the urban heat island effect to summer temperatures induced by urban expansion.ENVIRONMENTAL RESEARCH LETTERS,14(9). |
MLA | Gao, Zhen,et al."Enhanced sensitivity of the urban heat island effect to summer temperatures induced by urban expansion".ENVIRONMENTAL RESEARCH LETTERS 14.9(2019). |
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