Articles | Volume 21, issue 12
https://doi.org/10.5194/acp-21-9475-2021
https://doi.org/10.5194/acp-21-9475-2021
Research article
 | 
23 Jun 2021
Research article |  | 23 Jun 2021

Separating emission and meteorological contributions to long-term PM2.5 trends over eastern China during 2000–2018

Qingyang Xiao, Yixuan Zheng, Guannan Geng, Cuihong Chen, Xiaomeng Huang, Huizheng Che, Xiaoye Zhang, Kebin He, and Qiang Zhang

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Latest update: 08 Dec 2024
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Short summary
We used both statistical methods and a chemical transport model to assess the contribution of meteorology and emissions to PM2.5 during 2000–2018. Both methods revealed that emissions dominated the long-term PM2.5 trend with notable meteorological effects ranged up to 37.9 % of regional annual average PM2.5. The meteorological contribution became more beneficial to PM2.5 control in southern China but more unfavorable in northern China during the studied period.
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