Articles | Volume 16, issue 15
Atmos. Chem. Phys., 16, 9891–9903, 2016
https://doi.org/10.5194/acp-16-9891-2016
Atmos. Chem. Phys., 16, 9891–9903, 2016
https://doi.org/10.5194/acp-16-9891-2016

Research article 08 Aug 2016

Research article | 08 Aug 2016

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 et al.

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
AR by L.K. Xue on behalf of the Authors (11 Jun 2016)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (27 Jun 2016) by Dwayne Heard
RR by Anonymous Referee #2 (27 Jun 2016)
RR by Anonymous Referee #1 (10 Jul 2016)
ED: Publish subject to technical corrections (17 Jul 2016) by Dwayne Heard
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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.
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