Articles | Volume 19, issue 9
Atmos. Chem. Phys., 19, 6125–6146, 2019
https://doi.org/10.5194/acp-19-6125-2019
Atmos. Chem. Phys., 19, 6125–6146, 2019
https://doi.org/10.5194/acp-19-6125-2019

Research article 09 May 2019

Research article | 09 May 2019

Dominant role of emission reduction in PM2.5 air quality improvement in Beijing during 2013–2017: a model-based decomposition analysis

Jing Cheng et al.

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Short summary
We attribute Beijing’s PM2.5 abatement in 2017 (compared to 2013) to the following factors: meteorology changes (3.8 μg m−3, 12.1 % of total), regional emission reduction (7.1 μg m−3, 22.5 %), and seven specific categories of control measures in Beijing (20.6 μg m−3, 65.4 %). Our study confirms the effectiveness of clean air actions in Beijing and its surrounding regions and reveals a new generation of control measures, and strengthened regional joint protection measures should be implemented.
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