Articles | Volume 17, issue 14
https://doi.org/10.5194/acp-17-9187-2017
https://doi.org/10.5194/acp-17-9187-2017
Research article
 | 
31 Jul 2017
Research article |  | 31 Jul 2017

Chemical composition of ambient PM2. 5 over China and relationship to precursor emissions during 2005–2012

Guannan Geng, Qiang Zhang, Dan Tong, Meng Li, Yixuan Zheng, Siwen Wang, and Kebin He

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We presented the characteristics of PM2.5 chemical composition over China during 2005–2012 by synthesis of in situ measurement data and satellite-based estimates. We also investigated the driving forces behind the changes by examining the changes in precursor emissions. We found that the decrease in sulfate is partly offset by the increase in nitrate. The results indicate that the synchronized abatement of emissions for multipollutants is necessary for reducing ambient PM2.5 over China.
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