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Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
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Volume 17, issue 14
Atmos. Chem. Phys., 17, 9187–9203, 2017
https://doi.org/10.5194/acp-17-9187-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: East Asia emissions assessment (EA2)

Atmos. Chem. Phys., 17, 9187–9203, 2017
https://doi.org/10.5194/acp-17-9187-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

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 et al.

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Short summary
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.
We presented the characteristics of PM2.5 chemical composition over China during 2005–2012 by...
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