Articles | Volume 17, issue 21
https://doi.org/10.5194/acp-17-13473-2017
https://doi.org/10.5194/acp-17-13473-2017
Research article
 | 
13 Nov 2017
Research article |  | 13 Nov 2017

Analysis of influential factors for the relationship between PM2.5 and AOD in Beijing

Caiwang Zheng, Chuanfeng Zhao, Yannian Zhu, Yang Wang, Xiaoqin Shi, Xiaolin Wu, Tianmeng Chen, Fang Wu, and Yanmei Qiu

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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Chuanfeng Zhao on behalf of the Authors (14 Jul 2017)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (06 Aug 2017) by Xiaohong Liu
RR by Anonymous Referee #4 (21 Aug 2017)
RR by Anonymous Referee #5 (30 Aug 2017)
ED: Reconsider after minor revisions (Editor review) (08 Sep 2017) by Xiaohong Liu
AR by Chuanfeng Zhao on behalf of the Authors (14 Sep 2017)  Author's response    Manuscript
ED: Publish subject to technical corrections (01 Oct 2017) by Xiaohong Liu
AR by Chuanfeng Zhao on behalf of the Authors (03 Oct 2017)  Author's response    Manuscript
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Short summary
This study analyzes influential factors including the aerosol type, relative humidity (RH), atmospheric boundary layer height (BLH), wind speed and direction, and aerosol vertical structure to the AOD–PM2.5 relationship. It shows that the ratio of PM2.5 to AOD, η, varies a lot with aerosol type. η is smaller for scattering-dominant (coarse mode) than for absorbing-dominant (fine mode) aerosol. The higher the RH (BLH), the larger (smaller) the η. η also decreases with the surface wind speed.
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