The modulation of synoptic weather patterns and human activities on the diurnal cycle of the summertime canopy urban heat island in the Yangtze River Delta Urban Agglomeration, China

Shi, Tao; Yang, Yuanjian; Zong, Lian; Guo, Min; Qi, Ping; Lolli, Simone

doi:https://doi.org/10.5194/acp-25-4989-2025

Articles | Volume 25, issue 9

https://doi.org/10.5194/acp-25-4989-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-25-4989-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 25, issue 9

Research article

|

14 May 2025

Research article |

| 14 May 2025

The modulation of synoptic weather patterns and human activities on the diurnal cycle of the summertime canopy urban heat island in the Yangtze River Delta Urban Agglomeration, China

Tao Shi, Yuanjian Yang, Lian Zong, Min Guo, Ping Qi, and Simone Lolli

Supplement

https://doi.org/10.5194/acp-25-4989-2025-supplement

Data sets

The 30 m annual land cover datasets and its dynamics in China from 1990 to 2021 Jie Yang and Xin Huang https://doi.org/10.5281/zenodo.5816591

Daily 1-km gap-free PM2.5 grids in China, v1 (2000–2020) Kaixu Bai and Ke Li https://doi.org/10.5281/zenodo.5652265

Daily 1-km gap-free PM10 grids in China, v1 (2000–2020) Kaixu Bai and Ke Li https://doi.org/10.5281/zenodo.5652263

ERA5 hourly data on pressure levels from 1940 to present Hans Hersbach et al. https://doi.org/10.24381/cds.bd0915c6

Version 4 DMSP-OLS Nighttime Lights Time Series National Oceanic and Atmospheric Administration http://ngdc.NOAA.gov/eog/dmsp/downloadV4composites.html

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Short summary

Our study explored the daily temperature patterns in urban areas of the Yangtze River Delta, focusing on how weather and human activities impact these patterns. We found that temperatures were higher at night, and weather patterns had a bigger impact during the day, while human activities mattered more at night. This helps us understand and address urban overheating.