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

Lachatre, Mathieu; Fortems-Cheiney, Audrey; Foret, Gilles; Siour, Guillaume; Dufour, Gaëlle; Clarisse, Lieven; Clerbaux, Cathy; Coheur, Pierre-François; Van Damme, Martin; Beekmann, Matthias

doi:https://doi.org/10.5194/acp-19-6701-2019

Articles | Volume 19, issue 10

https://doi.org/10.5194/acp-19-6701-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-19-6701-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 10

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 PM_2.5 concentrations

Mathieu Lachatre, Audrey Fortems-Cheiney, Gilles Foret, Guillaume Siour, Gaëlle Dufour, Lieven Clarisse, Cathy Clerbaux, Pierre-François Coheur, Martin Van Damme, and Matthias Beekmann

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Final revised paper (published on 20 May 2019)
Supplement to the final revised paper
Preprint (discussion started on 12 Nov 2018)
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Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Referee comment', Anonymous Referee #1, 14 Dec 2018
- AC1: 'Answer to Anonymous Referee #1 Received and published: 14 Dec 2018:', Mathieu Lachatre, 03 Apr 2019
RC2: 'Review of the manuscript "The unintended consequence of SO2 and NO2 regulations over China: increase of ammonia levels and impact on PM2.5 concentrations"', Anonymous Referee #2, 23 Jan 2019
- AC2: 'Answer to Anonymous Referee #2 Received and published: 23 January 2019:', Mathieu Lachatre, 03 Apr 2019

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Mathieu Lachatre on behalf of the Authors (03 Apr 2019) Author's response Manuscript

ED: Publish subject to minor revisions (review by editor) (12 Apr 2019) by Kostas Tsigaridis

AR by Mathieu Lachatre on behalf of the Authors (18 Apr 2019) Author's response Manuscript

ED: Publish as is (24 Apr 2019) by Kostas Tsigaridis

AR by Mathieu Lachatre on behalf of the Authors (25 Apr 2019)

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Short summary

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 NO_x emission evolution rates to evaluate their influences on ammonia. It appears that theses decreases were the main explanation.