Revisiting urban heat island effects in China: Multi-satellite evidence from the ESA-CCI land surface temperature product

IF 10.5 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Sustainable Cities and Society Pub Date : 2025-03-07 DOI:10.1016/j.scs.2025.106281

Xing Li , Xiao Li , Hedi Ma , Juan Zhou , Fei Ge , Wanxin Zhang , Yan Yan , Yijing Zhou

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引用次数: 0

Abstract

Rapid urbanization affects local and regional climates, yet uncertainties in multi-satellite-derived surface urban heat island intensity (SUHII) remain poorly understood. This study reassessed China's multi-scale SUHII (2000–2020) and its uncertainties using seven satellite products from the European Space Agency's Climate Change Initiative Land Surface Temperature (LST) dataset via a dynamic-size sliding window method. Results showed that daytime SUHII exhibited a north-south gradient (−0.5 to 0 °C in north; 1.0–1.5 °C in south) with pronounced seasonal variations, whereas nighttime values remained uniform (0.3–1.0 °C) with minor seasonal fluctuations. Substantial inter-satellite discrepancies emerged during summertime in southern China (spreads up to 3.62 °C). Analysis of three long-term satellite records revealed increasing daytime SUHII trends in the south (>1.5 °C/10a), weak decreases in the north (<0.5 °C/10a) and moderate nighttime warming trends countrywide (0.5–1.0 °C/10a). Interannual SUHII variations are smaller than seasonal and diurnal variations. Assessment of data quality metrics suggested that both region-specific climate conditions-induced inherent uncertainties (e.g., clear-sky pixel availability and LST total uncertainty) and varying satellite overpass times are probably the primary drivers of inter-satellite discrepancies. Our findings underscore the importance of considering inter-satellite uncertainties when interpreting urban SUHII patterns, informing urban planning and climate change adaptation strategies.

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来源期刊

Sustainable Cities and Society Social Sciences-Geography, Planning and Development

CiteScore

22.00

自引率

13.70%

发文量

810

审稿时长

27 days

期刊介绍： Sustainable Cities and Society (SCS) is an international journal that focuses on fundamental and applied research to promote environmentally sustainable and socially resilient cities. The journal welcomes cross-cutting, multi-disciplinary research in various areas, including: 1. Smart cities and resilient environments; 2. Alternative/clean energy sources, energy distribution, distributed energy generation, and energy demand reduction/management; 3. Monitoring and improving air quality in built environment and cities (e.g., healthy built environment and air quality management); 4. Energy efficient, low/zero carbon, and green buildings/communities; 5. Climate change mitigation and adaptation in urban environments; 6. Green infrastructure and BMPs; 7. Environmental Footprint accounting and management; 8. Urban agriculture and forestry; 9. ICT, smart grid and intelligent infrastructure; 10. Urban design/planning, regulations, legislation, certification, economics, and policy; 11. Social aspects, impacts and resiliency of cities; 12. Behavior monitoring, analysis and change within urban communities; 13. Health monitoring and improvement; 14. Nexus issues related to sustainable cities and societies; 15. Smart city governance; 16. Decision Support Systems for trade-off and uncertainty analysis for improved management of cities and society; 17. Big data, machine learning, and artificial intelligence applications and case studies; 18. Critical infrastructure protection, including security, privacy, forensics, and reliability issues of cyber-physical systems. 19. Water footprint reduction and urban water distribution, harvesting, treatment, reuse and management; 20. Waste reduction and recycling; 21. Wastewater collection, treatment and recycling; 22. Smart, clean and healthy transportation systems and infrastructure;