Articles | Volume 16, issue 15
https://doi.org/10.5194/acp-16-9891-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acp-16-9891-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Oxidative capacity and radical chemistry in the polluted atmosphere of Hong Kong and Pearl River Delta region: analysis of a severe photochemical smog episode
Likun Xue
CORRESPONDING AUTHOR
Environment Research Institute, Shandong University, Ji'nan,
Shandong, China
Rongrong Gu
Environment Research Institute, Shandong University, Ji'nan,
Shandong, China
Department of Civil and Environmental Engineering, Hong Kong
Polytechnic University, Hong Kong, China
Environment Research Institute, Shandong University, Ji'nan,
Shandong, China
Xinfeng Wang
Environment Research Institute, Shandong University, Ji'nan,
Shandong, China
Sandra Saunders
School of Chemistry and Biochemistry, University of Western
Australia, WA, Australia
Donald Blake
Department of Chemistry, University of California at Irvine,
Irvine, CA, USA
Peter K. K. Louie
Environmental Protection Department, the Government of Hong Kong
Special Administrative Region, Hong Kong, China
Connie W. Y. Luk
Environmental Protection Department, the Government of Hong Kong
Special Administrative Region, Hong Kong, China
Isobel Simpson
Department of Chemistry, University of California at Irvine,
Irvine, CA, USA
Zheng Xu
Environment Research Institute, Shandong University, Ji'nan,
Shandong, China
Zhe Wang
Department of Civil and Environmental Engineering, Hong Kong
Polytechnic University, Hong Kong, China
Yuan Gao
Department of Civil and Environmental Engineering, Hong Kong
Polytechnic University, Hong Kong, China
Shuncheng Lee
Department of Civil and Environmental Engineering, Hong Kong
Polytechnic University, Hong Kong, China
Abdelwahid Mellouki
Environment Research Institute, Shandong University, Ji'nan,
Shandong, China
Wenxing Wang
Environment Research Institute, Shandong University, Ji'nan,
Shandong, China
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Short summary
The chemical budgets and principal sources of ROx and NO3 radicals during a multi-day photochemical smog episode in Hong Kong are elucidated by an observation-constrained MCM model. NO3 was shown to be an important oxidant even during daytime in a pollution case when high aerosol loading attenuated the solar irradiation. This study suggests the potential important role of daytime NO3 chemistry in polluted atmospheres under conditions with the co-existence of abundant O3, NO2, VOCs, and aerosols.
The chemical budgets and principal sources of ROx and NO3 radicals during a multi-day...
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