Photochemical processing of aqueous atmospheric brown carbon

Zhao, R.; Lee, A. K. Y.; Huang, L.; Li, X.; Yang, F.; Abbatt, J. P. D.

doi:https://doi.org/10.5194/acp-15-6087-2015

Articles | Volume 15, issue 11

https://doi.org/10.5194/acp-15-6087-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-15-6087-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 15, issue 11

Research article

|

04 Jun 2015

Research article |

| 04 Jun 2015

Photochemical processing of aqueous atmospheric brown carbon

R. Zhao, A. K. Y. Lee, L. Huang, X. Li, F. Yang, and J. P. D. Abbatt

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Final revised paper (published on 04 Jun 2015)
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Preprint (discussion started on 30 Jan 2015)
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Interactive discussion

Status: closed

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

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RC C122: 'Review of Zhao et al. paper on BrC', Anonymous Referee #2, 07 Feb 2015
RC C432: 'Review of aqueous BrC bleaching experiments', Anonymous Referee #3, 27 Feb 2015
AC C2497: 'Response to reviews and revised manuscript', Ran Zhao, 12 May 2015

Peer-review completion

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

AR by Ran Zhao on behalf of the Authors (13 May 2015) Author's response Manuscript

ED: Publish as is (13 May 2015) by Kostas Tsigaridis

AR by Ran Zhao on behalf of the Authors (13 May 2015)

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Short summary

Aqueous-phase photochemical decay of light absorbing organic compounds, or atmospheric brown carbon (BrC), is investigated in this study. The absorptive change of laboratory surrogates of BrC, as well as biofuel combustion samples, were monitored during photolysis and OH oxidation experiments. The major finding is the rapid change in the absorptivity of BrC during such photochemical processing. This change should be taken into account to evaluate the importance of BrC in the atmosphere.