Heterogeneous OH oxidation of secondary brown carbon aerosol

Schnitzler, Elijah G.; Abbatt, Jonathan P. D.

doi:https://doi.org/10.5194/acp-18-14539-2018

Articles | Volume 18, issue 19

https://doi.org/10.5194/acp-18-14539-2018

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

https://doi.org/10.5194/acp-18-14539-2018

© 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

Heterogeneous OH oxidation of secondary brown carbon aerosol

Elijah G. Schnitzler and Jonathan P. D. Abbatt

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Final revised paper (published on 11 Oct 2018)
Supplement to the final revised paper
Preprint (discussion started on 29 Mar 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 comment', Anonymous Referee #1, 30 Apr 2018
- AC1: 'Response to Reviewer 1', Elijah Schnitzler, 11 Jul 2018
RC2: 'Review of Schnitzler', Anonymous Referee #2, 30 May 2018
- AC2: 'Response to Reviewer 2', Elijah Schnitzler, 11 Jul 2018

Peer-review completion

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

AR by Elijah Schnitzler on behalf of the Authors (17 Jul 2018) Author's response Manuscript

ED: Publish as is (08 Sep 2018) by Rainer Volkamer

AR by Elijah Schnitzler on behalf of the Authors (18 Sep 2018)

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Short summary

Brown carbon (BrC) has significant but poorly constrained effects on climate. In this work, we investigate the effects of the OH radical on optical properties of secondary BrC in a series of smog chamber experiments. At high relative humidity (RH), we find that the evolution of the particles is complex, exhibiting rapid absorption enhancement followed by slow bleaching. At low RH, bleaching does not occur. These results further our understanding of the highly variable evolution of ambient BrC.