Aerosol pH and chemical regimes of sulfate formation in aerosol water during winter haze in the North China Plain

Tao, Wei; Su, Hang; Zheng, Guangjie; Wang, Jiandong; Wei, Chao; Liu, Lixia; Ma, Nan; Li, Meng; Zhang, Qiang; Pöschl, Ulrich; Cheng, Yafang

doi:https://doi.org/10.5194/acp-20-11729-2020

Articles | Volume 20, issue 20

https://doi.org/10.5194/acp-20-11729-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-20-11729-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 20

Research article

|

17 Oct 2020

Research article |

| 17 Oct 2020

Aerosol pH and chemical regimes of sulfate formation in aerosol water during winter haze in the North China Plain

Wei Tao, Hang Su, Guangjie Zheng, Jiandong Wang, Chao Wei, Lixia Liu, Nan Ma, Meng Li, Qiang Zhang, Ulrich Pöschl, and Yafang Cheng

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Final revised paper (published on 17 Oct 2020)
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Preprint (discussion started on 06 Apr 2020)
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Interactive discussion

Status: closed

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

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RC1: 'Comments', Anonymous Referee #1, 10 May 2020
- AC1: 'Response to Anonymous Referee #1', Wei Tao, 07 Aug 2020
RC2: 'comments', Anonymous Referee #2, 13 Jun 2020
- AC2: 'Response to Anonymous Referee #2', Wei Tao, 07 Aug 2020

Peer-review completion

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

AR by Wei Tao on behalf of the Authors (07 Aug 2020) Author's response Manuscript

ED: Referee Nomination & Report Request started (18 Aug 2020) by Veli-Matti Kerminen

RR by Anonymous Referee #2 (26 Aug 2020)

ED: Publish as is (26 Aug 2020) by Veli-Matti Kerminen

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Short summary

We simulated the thermodynamic and multiphase reactions in aerosol water during a wintertime haze event over the North China Plain. It was found that aerosol pH exhibited a strong spatiotemporal variability, and multiple oxidation pathways were predominant for particulate sulfate formation in different locations. Sensitivity tests further showed that ammonia, crustal particles, and dissolved transition metal ions were important factors for multiphase chemistry during haze episodes.