Influence of relative humidity on the heterogeneous oxidation of secondary organic aerosol

Li, Ziyue; Smith, Katherine A.; Cappa, Christopher D.

doi:https://doi.org/10.5194/acp-18-14585-2018

Articles | Volume 18, issue 19

https://doi.org/10.5194/acp-18-14585-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-18-14585-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 19

Research article

|

11 Oct 2018

Research article |

| 11 Oct 2018

Influence of relative humidity on the heterogeneous oxidation of secondary organic aerosol

Ziyue Li, Katherine A. Smith, and Christopher D. Cappa

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Final revised paper (published on 11 Oct 2018)
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Preprint (discussion started on 12 Jun 2018)
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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: 'referee comments', Anonymous Referee #1, 14 Jul 2018
- SC1: 'Response to Reviewer #1', Ziyue Li, 03 Aug 2018
RC2: 'Review', Anonymous Referee #2, 07 Aug 2018
AC1: 'Response to reviewers', Christopher Cappa, 14 Sep 2018

Peer-review completion

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

AR by Christopher Cappa on behalf of the Authors (14 Sep 2018) Author's response Manuscript

ED: Publish as is (21 Sep 2018) by Markus Ammann

AR by Ziyue Li on behalf of the Authors (22 Sep 2018) Author's response Manuscript

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Short summary

We investigated the influence of relative humidity (RH) on the heterogeneous oxidation of secondary organic aerosol (SOA) particles by OH radicals. We observed significantly faster volume loss and compositional change of SOA at high RH, showing that viscosity differences determine compositional changes, but variability in either the uptake coefficient or the fragmentation probability are required to explain the difference in volume loss between low and high RH.