Assessing the urban heat island variations and its influencing mechanism in metropolitan areas of Pearl River Delta, South China
文献类型：期刊论文
| 作者 | Hou, Haoran2,3; Liu, Kai2; Li, Xueke4; Chen, Shaohui2 ; Wang, Weimin1; Rong, Kai5
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| 刊名 | PHYSICS AND CHEMISTRY OF THE EARTH
 |
| 出版日期 | 2020-12-01 |
| 卷号 | 120页码:10 |
| 关键词 | Urban heat island Pearl river delta Attribution analysis Sensible heat Latent heat |
| ISSN号 | 1474-7065 |
| DOI | 10.1016/j.pce.2020.102953 |
| 通讯作者 | Liu, Kai(liukai_cas@yahoo.com) |
| 英文摘要 | Urban heat island (UHI) is human-induced temperature reflected on the earth's surface. Although spatiotemporal variations and driving factors of UHI have been explored extensively, the underlying mechanisms of UHI remain uncertain. Using multi-source datasets of air temperature (Ta) and surface heat flux variables, we quantify the dynamics of urban-rural Ta difference (Delta T) at monthly, seasonal and annual time scales for nine cities in Pearl River Delta (PRD) during 2000-2017. The impact of sensible heat flux and latent heat flux on UHI variations are further investigated from the perspective of the surface energy balance theory. Results demonstrate that all PRD cities have apparent UHI, as evidenced by maximum Delta T in summer and minimum Delta T in winter. A notably declining trend of Delta T is observed in Shenzhen and Guangzhou, which have the largest population and build-up areas, during 2000-2017. However, trends of Delta T are not statistically significant in other cities. Attribution analysis reveals that sensible heat and latent heat significantly affect the UHI at different stages of urbanization. For the nine cities in PRD, the primary factor responsible for heat convection is the varied urban compositions formed by different developing trajectories. Specifically, sensible heat flux contributes substantially to Delta T changes in Dongguan and Shenzhen, which experienced rapid urban expansion and with complex urban structures. By contrast, latent heat flux dominates the Delta T changes in Zhongshan and Huizhou where relatively simple urban structures are preserved. Our study highlights the importance of urban patterns, sensible heat, and latent heat to understand the UHI dynamics and variations in PRD, which provides guidance for developing appropriate mitigation strategies in city planning to alleviate UHI-related burdens. |
| WOS关键词 | MANN-KENDALL ; TEMPERATURE ; CLIMATE ; ATTRIBUTION ; EXPANSION ; PATTERNS ; IMPACTS ; SUMMER |
| 资助项目 | National Natural Science Foundation of China[41971315/41571356] |
| WOS研究方向 | Geology ; Meteorology & Atmospheric Sciences ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000600436800001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/137131]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Liu, Kai |
| 作者单位 | 1.Shenzhen Environm Monitoring Ctr, Shenzhen 518049, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Brown Univ, Inst Brown Environm & Soc, Providence, RI 02912 USA 5.Shanghai Cagen Intelligent Technol Co Ltd, Shanghai 201100, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hou, Haoran,Liu, Kai,Li, Xueke,et al. Assessing the urban heat island variations and its influencing mechanism in metropolitan areas of Pearl River Delta, South China[J]. PHYSICS AND CHEMISTRY OF THE EARTH,2020,120:10. |
| APA | Hou, Haoran,Liu, Kai,Li, Xueke,Chen, Shaohui,Wang, Weimin,&Rong, Kai.(2020).Assessing the urban heat island variations and its influencing mechanism in metropolitan areas of Pearl River Delta, South China.PHYSICS AND CHEMISTRY OF THE EARTH,120,10. |
| MLA | Hou, Haoran,et al."Assessing the urban heat island variations and its influencing mechanism in metropolitan areas of Pearl River Delta, South China".PHYSICS AND CHEMISTRY OF THE EARTH 120(2020):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
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