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ACP | Articles | Volume 19, issue 10
Atmos. Chem. Phys., 19, 6701–6716, 2019
https://doi.org/10.5194/acp-19-6701-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Atmos. Chem. Phys., 19, 6701–6716, 2019
https://doi.org/10.5194/acp-19-6701-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 20 May 2019

Research article | 20 May 2019

The unintended consequence of SO2 and NO2 regulations over China: increase of ammonia levels and impact on PM2.5 concentrations

Mathieu Lachatre et al.

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Beirle, S., Boersma, K., Platt, U., Laurence, M., and Wagner, T.: Megacity emissions and lifetimes of nitrogen oxides probed from space, Science, 333, 1737–1739, https://doi.org/10.1002/2016GL068354, 2011. a
Chen, Q., Song, S., Stefan, H., Yuei-An, L., Zhu, W., and Jingyang, Z.: Assessment of ZTD derived from ECMWF/NCEP datawith GPS ZTD over China, GPS Solut., 15, 415–425, https://doi.org/10.1007/s10291-010-0200-x, 2010. a
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It has been observed from satellite-based instruments that ammonia levels strongly increased between 2011 and 2015. We have used the CHIMERE CTM to understand what could explain such an increase. We first focused on meteorological condition variations, and it has been concluded that meteorology did not explain ammonia evolution. Then, we focused on SO2 and NOx emission evolution rates to evaluate their influences on ammonia. It appears that theses decreases were the main explanation.
It has been observed from satellite-based instruments that ammonia levels strongly increased...
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