Articles | Volume 21, issue 6
Atmos. Chem. Phys., 21, 4357–4379, 2021
https://doi.org/10.5194/acp-21-4357-2021
Atmos. Chem. Phys., 21, 4357–4379, 2021
https://doi.org/10.5194/acp-21-4357-2021

Research article 22 Mar 2021

Research article | 22 Mar 2021

Revealing the sulfur dioxide emission reductions in China by assimilating surface observations in WRF-Chem

Tie Dai et al.

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Tie Dai on behalf of the Authors (15 Feb 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish subject to minor revisions (review by editor) (16 Feb 2021) by Jianping Huang
AR by Tie Dai on behalf of the Authors (16 Feb 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (18 Feb 2021) by Jianping Huang
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Short summary
The anthropogenic emission of sulfur dioxide (SO2) over China has significantly declined as a consequence of the clean air actions. We have developed a new emission inversion system to dynamically update the SO2 emission grid by grid over China by assimilating ground-based SO2 observations. The inverted SO2 emission over China in November 2016 on average had declined by 49.4 % since 2010, which is well in agreement with the bottom-up estimation of 48.0 %.
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