Articles | Volume 20, issue 10
Atmos. Chem. Phys., 20, 6147–6158, 2020
https://doi.org/10.5194/acp-20-6147-2020
Atmos. Chem. Phys., 20, 6147–6158, 2020
https://doi.org/10.5194/acp-20-6147-2020

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 et al.

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AR by Anna Wenzel on behalf of the Authors (25 Mar 2020)  Author's response    Manuscript
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.
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