Articles | Volume 21, issue 19
Atmos. Chem. Phys., 21, 14959–14981, 2021
https://doi.org/10.5194/acp-21-14959-2021
Atmos. Chem. Phys., 21, 14959–14981, 2021
https://doi.org/10.5194/acp-21-14959-2021

Research article 08 Oct 2021

Research article | 08 Oct 2021

Response of particle number concentrations to the clean air action plan: lessons from the first long-term aerosol measurements in a typical urban valley in western China

Suping Zhao et al.

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Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on acp-2021-433', Anonymous Referee #2, 02 Aug 2021
    • AC1: 'Reply on RC1', Suping Zhao, 07 Aug 2021
  • RC2: 'Comment on acp-2021-433', Anonymous Referee #1, 03 Aug 2021
    • AC2: 'Reply on RC2', Suping Zhao, 20 Aug 2021

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Suping Zhao on behalf of the Authors (28 Aug 2021)  Author's response    Author's tracked changes    Manuscript
ED: Referee Nomination & Report Request started (02 Sep 2021) by Veli-Matti Kerminen
RR by Anonymous Referee #1 (03 Sep 2021)
ED: Publish subject to minor revisions (review by editor) (03 Sep 2021) by Veli-Matti Kerminen
AR by Suping Zhao on behalf of the Authors (05 Sep 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (14 Sep 2021) by Veli-Matti Kerminen
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Short summary
We found a large PM2.5 reduction in response to Clean Air Action (CAA), but impacts of CAA on particle number concentrations (PNCs) may be different from PM2.5 mass due to newly formed particle impacts. The k-means clustering technique and Theil–Sen regression were used to analyze PNCs variations and to quantify their trends. Increased daytime solar radiation, higher temperature and lower RH at noon induced by reduced PM2.5 mass promoted formation of new particles and increased particle numbers.
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