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Study of Urban Heat Island Effect in Hangzhou Metropolitan Area Based on SW-TES Algorithm and Image Dichotomous Model

Author

Listed:
  • Kailin Shang
  • Linfeng Xu
  • Xuan Liu
  • Zhengtong Yin
  • Zhixin Liu
  • Xiaolu Li
  • Lirong Yin
  • Wenfeng Zheng

Abstract

In recent years, with economic development, urbanization has been accelerating. In the past 100 years, the global average temperature has increased by 0.5°C, and according to the predictions of most global climate models, the temperature will continue to increase by 1.5°C to 3.0°C in the next 100 years. Under the influence of global warming, the urban heat island effect problem is becoming more and more serious, bringing much harm. Studying the thermal effect and its influencing factors is of great significance for sustainable urban development. In this study, the seasonal and interannual surface temperature changes of the study area are inverted based on the SW-TES algorithm, and the LST inversion of the algorithm is simply verified. At the same time, a cell dichotomous model was established to explore the influencing factors of the urban heat island effect and the influence of different land use types and normalized vegetation indices in the Hangzhou metropolitan area was analyzed. The results showed that the overall heating trend of the study area showed a heating trend, the expansion rate of regional construction land was relatively fast, and the scale of urban land was increasing. Based on the results of surface temperature changes of areas with different land types, we obtained the temperature trends of each land type [from 2005 to 2018] and found that there was a negative correlation between surface temperature and normalized vegetation index. This study provides a theoretical basis to evaluate the urban heat island effect and analyze factors that impact it and would promote sustainable urban development.

Suggested Citation

  • Kailin Shang & Linfeng Xu & Xuan Liu & Zhengtong Yin & Zhixin Liu & Xiaolu Li & Lirong Yin & Wenfeng Zheng, 2023. "Study of Urban Heat Island Effect in Hangzhou Metropolitan Area Based on SW-TES Algorithm and Image Dichotomous Model," SAGE Open, , vol. 13(4), pages 21582440231, November.
  • Handle: RePEc:sae:sagope:v:13:y:2023:i:4:p:21582440231208851
    DOI: 10.1177/21582440231208851
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    References listed on IDEAS

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    1. Yanxia Li & Xinkai Zhang & Sijie Zhu & Xiaoyu Wang & Yongdong Lu & Sihong Du & Xing Shi, 2020. "Transformation of Urban Surfaces and Heat Islands in Nanjing during 1984–2018," Sustainability, MDPI, vol. 12(16), pages 1-19, August.
    2. Meng Huang & Peng Cui & Xin He, 2018. "Study of the Cooling Effects of Urban Green Space in Harbin in Terms of Reducing the Heat Island Effect," Sustainability, MDPI, vol. 10(4), pages 1-17, April.
    3. Qunfang Huang & Yuqi Lu, 2015. "The Effect of Urban Heat Island on Climate Warming in the Yangtze River Delta Urban Agglomeration in China," IJERPH, MDPI, vol. 12(8), pages 1-17, July.
    4. Yunfei Li & Sebastian Schubert & Jürgen P. Kropp & Diego Rybski, 2020. "On the influence of density and morphology on the Urban Heat Island intensity," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
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