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

Dai, Tie; Cheng, Yueming; Goto, Daisuke; Li, Yingruo; Tang, Xiao; Shi, Guangyu; Nakajima, Teruyuki

doi:https://doi.org/10.5194/acp-21-4357-2021

Articles | Volume 21, issue 6

https://doi.org/10.5194/acp-21-4357-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-21-4357-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 6

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, Yueming Cheng, Daisuke Goto, Yingruo Li, Xiao Tang, Guangyu Shi, and Teruyuki Nakajima

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Final revised paper (published on 22 Mar 2021)
Supplement to the final revised paper
Preprint (discussion started on 17 Dec 2020)

Interactive discussion

Status: closed

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

- Printer-friendly version

- Supplement

RC1: 'Interactive comment on “Revealing the sulfur dioxide emission reductions in China by assimilating surface observations in WRF-Chem"', Anonymous Referee #1, 14 Jan 2021
- AC1: 'Reply on RC1', Tie Dai, 15 Feb 2021
RC2: 'Comments to “Revealing the sulfur dioxide emission reductions in China by assimilating surface observations in WRF-Chem”', Anonymous Referee #2, 15 Jan 2021
- AC2: 'Reply on RC2', Tie Dai, 15 Feb 2021
RC3: 'Interactive comment on“Revealing the sulfurdioxide emission reductions in China byassimilating surface observations in WRF-Chem”byTie Dai et al.', Anonymous Referee #3, 17 Jan 2021
- AC3: 'Reply on RC3', Tie Dai, 15 Feb 2021

Peer-review completion

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 %.