Mercury oxidation from bromine chemistry in the free troposphere over the southeastern US

Coburn, Sean; Dix, Barbara; Edgerton, Eric; Holmes, Christopher D.; Kinnison, Douglas; Liang, Qing; ter Schure, Arnout; Wang, Siyuan; Volkamer, Rainer

doi:https://doi.org/10.5194/acp-16-3743-2016

Articles | Volume 16, issue 6

https://doi.org/10.5194/acp-16-3743-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Marine trace gases and aerosols over tropical oceans (AMT/ACP...

https://doi.org/10.5194/acp-16-3743-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 16, issue 6

Research article

|

21 Mar 2016

Research article |

| 21 Mar 2016

Mercury oxidation from bromine chemistry in the free troposphere over the southeastern US

Sean Coburn, Barbara Dix, Eric Edgerton, Christopher D. Holmes, Douglas Kinnison, Qing Liang, Arnout ter Schure, Siyuan Wang, and Rainer Volkamer

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Final revised paper (published on 21 Mar 2016)
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Preprint (discussion started on 21 Oct 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 C9259: 'anonymous review', Anonymous Referee #1, 14 Nov 2015
- AC C12325: 'Author response to referee #1', Sean Coburn, 11 Feb 2016
RC C10398: 'Review of Coburn et al., Mercury oxidation from bromine chemistry in the free troposphere over the southeastern US', Anonymous Referee #2, 14 Dec 2015
- AC C12326: 'Author response to referee #2', Sean Coburn, 11 Feb 2016

Peer-review completion

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

AR by Sean Coburn on behalf of the Authors (28 Feb 2016) Author's response Manuscript

ED: Publish as is (04 Mar 2016) by Lucy Carpenter

AR by Sean Coburn on behalf of the Authors (07 Mar 2016)

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Short summary

Here we present a day of case study measurements of the vertical distribution of bromine monoxide over the coastal region of the Gulf of Mexico. These measurements are used to assess the contribution of bromine radicals to the oxidation of elemental mercury in the troposphere. We find that the measured levels of bromine in the troposphere are sufficient to quickly oxidize mercury, which has significant implications for our understanding of atmospheric mercury processes.