Oxidation of low-molecular-weight organic compounds in  cloud droplets: global impact on tropospheric oxidants

Rosanka, Simon; Sander, Rolf; Franco, Bruno; Wespes, Catherine; Wahner, Andreas; Taraborrelli, Domenico

doi:https://doi.org/10.5194/acp-21-9909-2021

Articles | Volume 21, issue 12

https://doi.org/10.5194/acp-21-9909-2021

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

Special issue:

https://doi.org/10.5194/acp-21-9909-2021

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

Articles | Volume 21, issue 12

Research article

|

01 Jul 2021

Research article |

| 01 Jul 2021

Oxidation of low-molecular-weight organic compounds in cloud droplets: global impact on tropospheric oxidants

Simon Rosanka, Rolf Sander, Bruno Franco, Catherine Wespes, Andreas Wahner, and Domenico Taraborrelli

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Final revised paper (published on 01 Jul 2021)
Preprint (discussion started on 04 Nov 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 Rosanka et al 2020', Anonymous Referee #1, 23 Dec 2020
- AC1: 'Reply on RC1', Simon Rosanka, 01 Mar 2021
SC1: 'Comment on acp-2020-1041 by Jos Lelieveld: A major step forward', Johannes Lelieveld, 30 Dec 2020
- AC2: 'Reply on SC1', Simon Rosanka, 01 Mar 2021
RC2: 'Review of Rosanka et al.', Hartmut Herrmann, 18 Jan 2021
- AC3: 'Reply on RC2', Simon Rosanka, 01 Mar 2021

Peer-review completion

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

AR by Simon Rosanka on behalf of the Authors (02 Mar 2021) Author's response Author's tracked changes Manuscript

ED: Referee Nomination & Report Request started (09 Mar 2021) by John Orlando

RR by Anonymous Referee #1 (22 Mar 2021)

ED: Publish as is (07 Apr 2021) by John Orlando

AR by Simon Rosanka on behalf of the Authors (16 Apr 2021) Manuscript

Short summary

In-cloud destruction of ozone depends on hydroperoxyl radicals in cloud droplets, where they are produced by oxygenated volatile organic compound (OVOC) oxygenation. Only rudimentary representations of these processes, if any, are currently available in global atmospheric models. By using a comprehensive atmospheric model that includes a complex in-cloud OVOC oxidation scheme, we show that atmospheric oxidants are reduced and models ignoring this process will underpredict clouds as ozone sinks.