Articles | Volume 23, issue 12
https://doi.org/10.5194/acp-23-7057-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-23-7057-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
OH measurements in the coastal atmosphere of South China: possible missing OH sinks in aged air masses
Zhouxing Zou
Department of Civil and Environmental Engineering, The Hong Kong
Polytechnic University, Hong Kong SAR, China
Qianjie Chen
Department of Civil and Environmental Engineering, The Hong Kong
Polytechnic University, Hong Kong SAR, China
Department of Civil and Environmental Engineering, The Hong Kong
Polytechnic University, Hong Kong SAR, China
Qi Yuan
Department of Civil and Environmental Engineering, The Hong Kong
Polytechnic University, Hong Kong SAR, China
Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Hong Kong SAR, China
Yanan Wang
Department of Civil and Environmental Engineering, The Hong Kong
Polytechnic University, Hong Kong SAR, China
Enyu Xiong
Department of Civil and Environmental Engineering, The Hong Kong
Polytechnic University, Hong Kong SAR, China
Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Hong Kong SAR, China
Department of Civil and Environmental Engineering, The Hong Kong
Polytechnic University, Hong Kong SAR, China
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Cited
12 citations as recorded by crossref.
- Differences in aerosol chemistry at a regional background site in Hong Kong before and during the COVID-19 pandemic Y. Huo et al.
- Local radical chemistry driven ozone pollution in a megacity: A case study J. Guo et al.
- Quantification of Hydroperoxyl Radical Based on Peroxynitric Acid Measurement S. Cheng et al.
- OVOCs drive radical cycling and ozone formation in background air E. Xiong et al.
- Unclassical Radical Generation Mechanisms in the Troposphere: A Review X. Yang et al.
- Modeling Analysis of Nocturnal Nitrate Formation Pathways during Co-Occurrence of Ozone and PM2.5 Pollution in North China Plain W. Dai et al.
- Ambient measurements and improved statistical proxies for gaseous sulfuric acid in coastal Hong Kong Y. Chen et al.
- Significant Biogenic Source of Oxygenated Volatile Organic Compounds and the Impacts on Photochemistry at a Regional Background Site in South China X. Lyu et al.
- Observation and modeling of atmospheric OH and HO2∗ radicals at a subtropical rural site and implications for secondary pollutants Z. Zou et al.
- Intensive photochemical oxidation in the marine atmosphere: evidence from direct radical measurements G. Zhang et al.
- 大气HOx自由基光谱学探测技术进展(特邀) 胡. Hu Renzhi et al.
- Revisiting the global budget of atmospheric glyoxal: updates on terrestrial and marine precursor emissions, chemistry, and impacts on atmospheric oxidation capacity A. Zhang et al.
12 citations as recorded by crossref.
- Differences in aerosol chemistry at a regional background site in Hong Kong before and during the COVID-19 pandemic Y. Huo et al.
- Local radical chemistry driven ozone pollution in a megacity: A case study J. Guo et al.
- Quantification of Hydroperoxyl Radical Based on Peroxynitric Acid Measurement S. Cheng et al.
- OVOCs drive radical cycling and ozone formation in background air E. Xiong et al.
- Unclassical Radical Generation Mechanisms in the Troposphere: A Review X. Yang et al.
- Modeling Analysis of Nocturnal Nitrate Formation Pathways during Co-Occurrence of Ozone and PM2.5 Pollution in North China Plain W. Dai et al.
- Ambient measurements and improved statistical proxies for gaseous sulfuric acid in coastal Hong Kong Y. Chen et al.
- Significant Biogenic Source of Oxygenated Volatile Organic Compounds and the Impacts on Photochemistry at a Regional Background Site in South China X. Lyu et al.
- Observation and modeling of atmospheric OH and HO2∗ radicals at a subtropical rural site and implications for secondary pollutants Z. Zou et al.
- Intensive photochemical oxidation in the marine atmosphere: evidence from direct radical measurements G. Zhang et al.
- 大气HOx自由基光谱学探测技术进展(特邀) 胡. Hu Renzhi et al.
- Revisiting the global budget of atmospheric glyoxal: updates on terrestrial and marine precursor emissions, chemistry, and impacts on atmospheric oxidation capacity A. Zhang et al.
Saved (final revised paper)
Latest update: 11 May 2026
Short summary
We present OH observation and model simulation results at a coastal site in Hong Kong. The model predicted the OH concentration under high-NOx well but overpredicted it under low-NOx conditions. This implies an insufficient understanding of OH chemistry under low-NOx conditions. We show evidence of missing OH sinks as a possible cause of the overprediction.
We present OH observation and model simulation results at a coastal site in Hong Kong. The model...
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