Journal article
Impact of land use change on the urban-rural temperature disparity in Eastern China
Atmospheric environment (1994), Vol.308, p.119850
05/2023
DOI: 10.1016/j.atmosenv.2023.119850
Abstract
Unprecedented land use and land cover change (LULCC) has occurred across China over the past two decades. While urban heat island effects have been well documented, few studies identified the LULCC-induced temperature disparity within cities and nearby rurual areas. Through an integrated analysis of satellite observations and regional model simulations, this study quantifies LULCC effect on summer temperature in old urban areas (existed in 2003), new urban areas (developed after 2003) and rural areas (non-urban areas) over Eastern China in 2003–2019. The results show that LULCC causes urban areas to become warmer, with the effect being more pronounced in new urban areas than in old urban areas. Air temperature (2 m, T2) and surface temperature (TSK) in new urban areas increase respectively by 1.69 °C and 3.40 °C, while in old urban areas, T2 (TSK) increases by 0.10 °C (0.13 °C). Significant vegetation degradation is observed in new urban areas, whereas vegetation restoration occurs in old urban areas in recent years as a result of urban renewal. In contrast, LULCC cools and greens rural areas, with a 0.02 °C (0.03 °C) decrease in T2 (TSK). Urbanization warming can spread to the suburbs, along with vegetation degradation. The analysis of surface energy budget reveals that the reduction in latent heat plays a dominant role in urban warming. Our study underscores that a much larger greenspace fraction and albedo management in urban areas are suggested as an inherent part of future LULCC policy to alleviate urban-rural temperature disparity.
•WRF model with assimilation of satellite-based land parameters is developed to capture the progression of land use change in East China.•New urban areas become warmer and less green, vegetation restoration occurs in old urban areas in recent years due to urban renewal.•A much larger greenspace fraction and albedo management are suggested in urban areas to alleviate urban warming.
Details
- Title: Subtitle
- Impact of land use change on the urban-rural temperature disparity in Eastern China
- Creators
- Yanyu Wang - University of IowaJun Wang - University of IowaHuanxin Zhang - University of IowaNathan Janechek - University of IowaYi Wang - China University of GeosciencesMeng Zhou - University of IowaPengke Shen - China Meteorological AdministrationJianguo Tan - Shanghai Meteorological BureauQianshan He - Shanghai Meteorological BureauTiantao Cheng - Fudan UniversityCheng Huang - Shanghai Academy of Environmental Sciences
- Resource Type
- Journal article
- Publication Details
- Atmospheric environment (1994), Vol.308, p.119850
- Publisher
- Elsevier Ltd
- DOI
- 10.1016/j.atmosenv.2023.119850
- ISSN
- 1352-2310
- eISSN
- 1873-2844
- Grant note
- DOI: 10.13039/100008893, name: University of Iowa; DOI: 10.13039/501100001809, name: National Natural Science Foundation of China, award: 41775019, 41801367, 42175179; DOI: 10.13039/501100002858, name: China Postdoctoral Science Foundation, award: 2022M712145; DOI: 10.13039/501100003399, name: Science and Technology Commission of Shanghai Municipality, award: 22YF1438200; DOI: 10.13039/501100004543, name: China Scholarship Council, award: 201906100125
- Language
- English
- Date published
- 05/2023
- Academic Unit
- Physics and Astronomy; Electrical and Computer Engineering; Chemical and Biochemical Engineering; Civil and Environmental Engineering; Iowa Technology Institute
- Record Identifier
- 9984410800002771
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