Articles | Volume 21, issue 4
https://doi.org/10.5194/acp-21-2491-2021
https://doi.org/10.5194/acp-21-2491-2021
Research article
 | 
19 Feb 2021
Research article |  | 19 Feb 2021

Dominant synoptic patterns associated with the decay process of PM2.5 pollution episodes around Beijing

Xiaoyan Wang, Renhe Zhang, Yanke Tan, and Wei Yu

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Latest update: 07 Oct 2024
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Short summary
The physical mechanisms of synoptic patterns affecting the decay process of air pollution episodes are investigated in this work. Three dominant circulation patterns are identified, which usually decrease the ambient PM2.5 concentrations by 27%–41% after they arrive around Beijing. Emission reductions led to a 4.3–5.7 μg (m3 yr-1)-1 decrease in PM2.5 concentrations around Beijing during 2014 to 2020.
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