Increasing Contribution of Chlorine Chemistry to Wintertime Ozone Formation Promoted by Enhanced Nitrogen Chemistry

Chlorine (Cl) radicals strongly affect atmospheric oxidation and the fate of pollutants. Despite several observations, the potential impacts of nitrogen chemistry associated with NO<sub>2</sub> on Cl chemistry are poorly understood. Here, we provided direct field evidence that the nitrogen chemistry enhancements triggered by the increased NO<sub>2</sub> drove daytime nitrate (NO<sub>3</sub><sup>-</sup>) photolysis and nighttime NO<sub>3</sub>-N<sub>2</sub>O<sub>5</sub> reactions, significantly promoting the increases in the concentrations of ClNO<sub>2</sub> and Cl<sub>2</sub> after the Chinese Spring Festival. The enhancement in the Cl chemistry facilitated the elevations of both O<sub>3</sub> and atmospheric oxidation capacity during the winter daytime. Our findings highlighted the importance of nitrogen chemistry induced by the increased NO<sub>2</sub> in enhanced Cl chemistry.

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Publication Details

Journal
Environmental Science & Technology
Published
2024-11-25
DOI
https://doi.org/10.1021/acs.est.4c09523
Citations
15
Primary Topic
Atmospheric chemistry and aerosols
Type
article
Field-Weighted Citation Impact
5.64

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article

Increasing Contribution of Chlorine Chemistry to Wintertime Ozone Formation Promoted by Enhanced Nitrogen Chemistry

John H. Seinfeld, Gaojie Chen, Jinsheng Chen, Youwei Hong et al.
15 citations
Environmental Science & Technology
Atmospheric chemistry and aerosols
5.64
article

Increasing Contribution of Chlorine Chemistry to Wintertime Ozone Formation Promoted by Enhanced Nitrogen Chemistry

John H. Seinfeld, Gaojie Chen, Jinsheng Chen, Youwei Hong, Xiaoting Ji, Yee Jun Tham, Haichao Wang, Mengren Li, Chen Yang, Likun Xue, Shaocai Yu, Xiaolong Fan, Ziyi Lin, Lingling Xu
article en
15 citations

Abstract

Chlorine (Cl) radicals strongly affect atmospheric oxidation and the fate of pollutants. Despite several observations, the potential impacts of nitrogen chemistry associated with NO<sub>2</sub> on Cl chemistry are poorly understood. Here, we provided direct field evidence that the nitrogen chemistry enhancements triggered by the increased NO<sub>2</sub> drove daytime nitrate (NO<sub>3</sub><sup>-</sup>) photolysis and nighttime NO<sub>3</sub>-N<sub>2</sub>O<sub>5</sub> reactions, significantly promoting the increases in the concentrations of ClNO<sub>2</sub> and Cl<sub>2</sub> after the Chinese Spring Festival. The enhancement in the Cl chemistry facilitated the elevations of both O<sub>3</sub> and atmospheric oxidation capacity during the winter daytime. Our findings highlighted the importance of nitrogen chemistry induced by the increased NO<sub>2</sub> in enhanced Cl chemistry.

Environmental Science & TechnologyVol. 58(51)
California Institute of Technology (US), Shandong University (CN), Sun Yat-sen University (CN), Chinese Academy of Sciences (CN), Institute of Urban Environment (CN), University of Chinese Academy of Sciences (CN), Zhejiang Gongshang University (CN), Zhejiang University (CN)
National Natural Science Foundation of China, Sun Yat-sen University, Fujian Provincial Department of Science and Technology, National Key Research and Development Program of China, Basic and Applied Basic Research Foundation of Guangdong Province
Openalex Percentile: Top 3%
Atmospheric chemistry and aerosols
5.64
DOISourceOpenAlex
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