Articles | Volume 20, issue 17
Atmos. Chem. Phys., 20, 10331–10350, 2020
https://doi.org/10.5194/acp-20-10331-2020
Atmos. Chem. Phys., 20, 10331–10350, 2020
https://doi.org/10.5194/acp-20-10331-2020

Research article 07 Sep 2020

Research article | 07 Sep 2020

Vertical distribution of particle-phase dicarboxylic acids, oxoacids and α-dicarbonyls in the urban boundary layer based on the 325 m tower in Beijing

Wanyu Zhao et al.

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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Pingqing Fu on behalf of the Authors (02 Jul 2020)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (13 Jul 2020) by Jianzhong Ma
RR by Anonymous Referee #2 (22 Jul 2020)
ED: Publish as is (23 Jul 2020) by Jianzhong Ma
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Short summary
Our observations provide detailed information on the abundance and vertical distribution of dicarboxylic acids, oxoacids and α-dicarbonyls in PM2.5 collected at three heights based on a 325 m meteorological tower in Beijing in summer. Our results demonstrate that organic acids at the ground surface are largely associated with local traffic emissions, while long-range atmospheric transport followed by photochemical ageing contributes more in the urban boundary layer than the ground surface.
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