Articles | Volume 25, issue 17
https://doi.org/10.5194/acp-25-10421-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-10421-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
12 Sep 2025
Research article |
| 12 Sep 2025
| 12 Sep 2025
Uncovering the impact of urban functional zones on air quality in China
Lulu Yuan
College of Earth and Environmental Sciences and College of Atmospheric Sciences, Lanzhou University, Lanzhou, China
Wenchao Han
CORRESPONDING AUTHOR
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China
Jiachen Meng
Emergency Management College, Nanjing University of Information Science & Technology, Nanjing, China
College of Earth and Environmental Sciences and College of Atmospheric Sciences, Lanzhou University, Lanzhou, China
Haojie Yu
College of Earth and Environmental Sciences and College of Atmospheric Sciences, Lanzhou University, Lanzhou, China
Wenze Li
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China
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A key challenge in climate projections is the uncertainty in cloud water response to anthropogenic aerosols, especially its time-dependence on diurnal microphysical-dynamic boundary layer feedback. Geostationary satellite shows neglecting the variations induces a compensation up to 45% of the initial cooling effect from increased cloud droplet concentration. The results provide new insights in aerosol-cloud interactions, verifying this is a significant yet often overlooked source of uncertainty.
Ruixue Li, Bida Jian, Jiming Li, Deyu Wen, Lijie Zhang, Yang Wang, and Yuan Wang
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Hemispheric or interannual averages of reflected solar radiation (RSR) can mask signals from seasonally active or region-specific mechanisms. We examine RSR characteristics from latitude and month perspectives, revealing decreased trends observed by CERES in both hemispheres driven by clear-sky atmospheric and cloud components at 30–50° N and cloud components at 0–50° S. AVHRR achieves symmetry criteria within uncertainty and is suitable for the long-term analysis of hemispheric RSR symmetry.
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Short summary
This study utilizes multi-source data to reveal the impact of various urban functional zones in China on the spatial distribution of pollutants. The findings indicate that the residential and commercial zones see notable air quality gains, but the improvement of air quality in the transportation zone is the least considerable. Moreover, the industrial zone has the most seasonal air quality variation. Therefore, air pollution prevention policies should consider differences in functional zones.
This study utilizes multi-source data to reveal the impact of various urban functional zones in...
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