Significant production of ClNO2 and possible source of Cl2 from N2O5 uptake at a suburban site in eastern China

Xia, Men; Peng, Xiang; Wang, Weihao; Yu, Chuan; Sun, Peng; Li, Yuanyuan; Liu, Yuliang; Xu, Zhengning; Wang, Zhe; Xu, Zheng; Nie, Wei; Ding, Aijun; Wang, Tao

doi:https://doi.org/10.5194/acp-20-6147-2020

Articles | Volume 20, issue 10

https://doi.org/10.5194/acp-20-6147-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-20-6147-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 10

Research article

|

26 May 2020

Research article |

| 26 May 2020

Significant production of ClNO₂ and possible source of Cl₂ from N₂O₅ uptake at a suburban site in eastern China

Men Xia, Xiang Peng, Weihao Wang, Chuan Yu, Peng Sun, Yuanyuan Li, Yuliang Liu, Zhengning Xu, Zhe Wang, Zheng Xu, Wei Nie, Aijun Ding, and Tao Wang

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Final revised paper (published on 26 May 2020)
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Preprint (discussion started on 07 Jan 2020)
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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: 'Review of acp-2019-1130 (Xia et al.)', Anonymous Referee #1, 04 Feb 2020
- AC1: 'Response to RC1 by Men Xia et al', Tao Wang, 20 Mar 2020
RC2: 'Comment', Anonymous Referee #2, 09 Feb 2020
- AC2: 'Response to RC2 by Men Xia et al', Tao Wang, 20 Mar 2020

Peer-review completion

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

AR by Tao Wang on behalf of the Authors (20 Mar 2020)

ED: Referee Nomination & Report Request started (01 Apr 2020) by Steven Brown

RR by Anonymous Referee #2 (19 Apr 2020)

ED: Publish as is (23 Apr 2020) by Steven Brown

AR by Tao Wang on behalf of the Authors (25 Apr 2020) Author's response Manuscript

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Short summary

ClNO₂ and Cl₂ can be photolyzed by sunlight to produce a highly reactive Cl atom which affects air quality and climate. We observed high ClNO₂ and Cl₂ concentrations during a recent field study in east China. We analyzed the data and proposed a new hypothesis on the Cl₂ production mechanism. Yields of ClNO₂ and Cl₂ from N₂O₂ uptake were parameterized using observational constraints, and they can be used in air quality models to improve simulations of atmospheric photochemistry and air quality.