Articles | Volume 22, issue 18
https://doi.org/10.5194/acp-22-12525-2022
© Author(s) 2022. 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-22-12525-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
26 Sep 2022
Research article |
| 26 Sep 2022
| 26 Sep 2022
Radical chemistry in the Pearl River Delta: observations and modeling of OH and HO2 radicals in Shenzhen in 2018
Xinping Yang
State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, China
State Environmental Protection Key Laboratory of Atmospheric Ozone Pollution Control, Peking University, Beijing, China
State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, China
State Environmental Protection Key Laboratory of Atmospheric Ozone Pollution Control, Peking University, Beijing, China
Xuefei Ma
State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, China
State Environmental Protection Key Laboratory of Atmospheric Ozone Pollution Control, Peking University, Beijing, China
Yue Gao
State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, China
State Environmental Protection Key Laboratory of Atmospheric Ozone Pollution Control, Peking University, Beijing, China
Zhaofeng Tan
Institute of Energy and Climate Research, IEK-8: Troposphere, Forschungszentrum Jülich GmbH, Jülich, Germany
Haichao Wang
School of Atmospheric Sciences, Sun Yat-Sen University, Zhuhai, China
Xiaorui Chen
State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, China
State Environmental Protection Key Laboratory of Atmospheric Ozone Pollution Control, Peking University, Beijing, China
State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, China
State Environmental Protection Key Laboratory of Atmospheric Ozone Pollution Control, Peking University, Beijing, China
Xiaofeng Huang
Laboratory of Atmospheric Observation Supersite, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, China
Lingyan He
Laboratory of Atmospheric Observation Supersite, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, China
Mengxue Tang
Laboratory of Atmospheric Observation Supersite, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, China
Laboratory of Atmospheric Observation Supersite, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, China
Shiyi Chen
State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, China
State Environmental Protection Key Laboratory of Atmospheric Ozone Pollution Control, Peking University, Beijing, China
Huabin Dong
State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, China
State Environmental Protection Key Laboratory of Atmospheric Ozone Pollution Control, Peking University, Beijing, China
Limin Zeng
State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, China
State Environmental Protection Key Laboratory of Atmospheric Ozone Pollution Control, Peking University, Beijing, China
Yuanhang Zhang
CORRESPONDING AUTHOR
State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, China
State Environmental Protection Key Laboratory of Atmospheric Ozone Pollution Control, Peking University, Beijing, China
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25 citations as recorded by crossref.
- Measurement report: Changes in light absorption and molecular composition of water-soluble humic-like substances during a winter haze bloom-decay process in Guangzhou, China C. Zou et al. 10.5194/acp-23-963-2023
- Observation and modeling of atmospheric OH and HO2∗ radicals at a subtropical rural site and implications for secondary pollutants Z. Zou et al. 10.5194/acp-25-8147-2025
- An observation-based analysis of atmospheric oxidation capacity in Guangdong, China L. Wei et al. 10.1016/j.atmosenv.2023.120260
- Reactive aldehyde chemistry explains the missing source of hydroxyl radicals X. Yang et al. 10.1038/s41467-024-45885-w
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- Reproducing Strong Urban Oxidation Capacity in Beijing Using an Empirical Parametrization Z. Tan et al. 10.1021/acs.est.5c05933
- Accurate elucidation of oxidation under heavy ozone pollution: a full suite of radical measurements in the chemically complex atmosphere R. Hu et al. 10.5194/acp-25-3011-2025
- Mobile monitoring of atmospheric terpene dynamics across the subtropical megacities Greater Bay Area Z. Liu et al. 10.1016/j.aeaoa.2025.100357
- The effect of nitrous acid (HONO) on ozone formation during pollution episodes in southeastern China: Results from model improvement and mechanism insights B. Hu et al. 10.1016/j.scitotenv.2023.164477
- Why did ozone concentrations remain high during Shanghai's static management? A statistical and radical-chemistry perspective J. Zhu et al. 10.5194/acp-24-8383-2024
- Revisiting the estimation indicator for HONO emissions from light-duty vehicles X. Yang et al. 10.1016/j.jhazmat.2024.135642
- The atmospheric oxidizing capacity in China – Part 1: Roles of different photochemical processes J. Dai et al. 10.5194/acp-23-14127-2023
- Photochemical formation process of ozone and spatiotemporally targeted control strategies along the transport pathways in the Pearl River Delta region Y. Li et al. 10.1016/j.jes.2025.05.032
- Unveiling Atmospheric HO2 Chemistry under Varying NO Conditions during the KORUS-AQ Campaign K. Kim et al. 10.1021/acsestair.5c00153
- Significant influence of oxygenated volatile organic compounds on atmospheric chemistry: a case study in a typical industrial city in China J. Dai et al. 10.5194/acp-25-7467-2025
- OH measurements in the coastal atmosphere of South China: possible missing OH sinks in aged air masses Z. Zou et al. 10.5194/acp-23-7057-2023
- Local radical chemistry driven ozone pollution in a megacity: A case study J. Guo et al. 10.1016/j.atmosenv.2023.120227
- Radical chemistry and VOCs-NOx-O3-nitrate sensitivity in the polluted atmosphere of a suburban site in the North China Plain Y. Li et al. 10.1016/j.scitotenv.2024.174405
- Roles of photochemical consumption of VOCs on regional background O3 concentration and atmospheric reactivity over the pearl river estuary, Southern China J. Sun et al. 10.1016/j.scitotenv.2024.172321
- Intensive photochemical oxidation in the marine atmosphere: evidence from direct radical measurements G. Zhang et al. 10.5194/acp-24-1825-2024
- Pollution characteristics, source appointment and environmental effect of oxygenated volatile organic compounds in Guangdong-Hong Kong-Macao Greater Bay Area: Implication for air quality management G. Liu et al. 10.1016/j.scitotenv.2024.170836
- An Observational Constraint of VOC Emissions for Air Quality Modeling Study in the Pearl River Delta Region B. Zhou et al. 10.1029/2022JD038122
- Unclassical Radical Generation Mechanisms in the Troposphere: A Review X. Yang et al. 10.1021/acs.est.4c00742
- Seasonal variations of O3 formation mechanism and atmospheric photochemical reactivity during severe high O3 pollution episodes in the Pearl River Delta region Q. Xie et al. 10.1016/j.atmosenv.2023.119918
Latest update: 31 Oct 2025
Short summary
We present the OH and HO2 radical observations at the Shenzhen site (Pearl River Delta, China) in the autumn of 2018. The diurnal maxima were 4.5 × 106 cm−3 for OH and 4.2 × 108 cm−3 for HO2 (including an estimated interference of 23 %–28 % from RO2 radicals during the daytime). The OH underestimation was identified again, and it was attributable to the missing OH sources. HO2 heterogeneous uptake, ROx sources and sinks, and the atmospheric oxidation capacity were evaluated as well.
We present the OH and HO2 radical observations at the Shenzhen site (Pearl River Delta, China)...
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