Effects of multi-charge on aerosol hygroscopicity measurement by a HTDMA

Shen, Chuanyang; Zhao, Gang; Zhao, Chunsheng

doi:https://doi.org/10.5194/amt-14-1293-2021

Articles | Volume 14, issue 2

https://doi.org/10.5194/amt-14-1293-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-14-1293-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 2

Research article

|

18 Feb 2021

Research article |

| 18 Feb 2021

Effects of multi-charge on aerosol hygroscopicity measurement by a HTDMA

Chuanyang Shen, Gang Zhao, and Chunsheng Zhao

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Final revised paper (published on 18 Feb 2021)
Supplement to the final revised paper
Preprint (discussion started on 08 Sep 2020)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Review of Shen et al.', Anonymous Referee #1, 30 Sep 2020
- AC2: 'Responses to referee #1', Chunsheng Zhao, 02 Dec 2020
RC2: 'Comment on AMT by Shen et al.', Anonymous Referee #2, 05 Oct 2020
- AC1: 'Responses to referee #2', Chunsheng Zhao, 19 Oct 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Chunsheng Zhao on behalf of the Authors (02 Dec 2020) Author's response Manuscript

ED: Referee Nomination & Report Request started (02 Dec 2020) by Mingjin Tang

RR by Anonymous Referee #1 (13 Dec 2020)

ED: Publish as is (22 Dec 2020) by Mingjin Tang

AR by Chunsheng Zhao on behalf of the Authors (23 Dec 2020) Author's response Manuscript

Short summary

Aerosol hygroscopicity measured by the humidified tandem differential mobility analyzer (HTDMA) is affected by multiply charged particles from two aspects: (1) number contribution and (2) the weakening effect. An algorithm is proposed to do the multi-charge correction and applied to a field measurement. Results show that the difference between corrected and measured size-resolved κ can reach 0.05, highlighting that special attention needs to be paid to the multi-charge effect when using HTDMA.