Global impacts of tropospheric halogens (Cl, Br, I) on oxidants and composition in GEOS-Chem

Sherwen, Tomás; Schmidt, Johan A.; Evans, Mat J.; Carpenter, Lucy J.; Großmann, Katja; Eastham, Sebastian D.; Jacob, Daniel J.; Dix, Barbara; Koenig, Theodore K.; Sinreich, Roman; Ortega, Ivan; Volkamer, Rainer; Saiz-Lopez, Alfonso; Prados-Roman, Cristina; Mahajan, Anoop S.; Ordóñez, Carlos

doi:https://doi.org/10.5194/acp-16-12239-2016

Articles | Volume 16, issue 18

https://doi.org/10.5194/acp-16-12239-2016

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

https://doi.org/10.5194/acp-16-12239-2016

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

Articles | Volume 16, issue 18

Research article

|

29 Sep 2016

Research article |

| 29 Sep 2016

Global impacts of tropospheric halogens (Cl, Br, I) on oxidants and composition in GEOS-Chem

Tomás Sherwen, Johan A. Schmidt, Mat J. Evans, Lucy J. Carpenter, Katja Großmann, Sebastian D. Eastham, Daniel J. Jacob, Barbara Dix, Theodore K. Koenig, Roman Sinreich, Ivan Ortega, Rainer Volkamer, Alfonso Saiz-Lopez, Cristina Prados-Roman, Anoop S. Mahajan, and Carlos Ordóñez

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Final revised paper (published on 29 Sep 2016)
Preprint (discussion started on 20 May 2016)

Interactive discussion

Status: closed

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

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RC1: 'Comments on "Global impacts of tropospheric halogens (Cl, Br, I) on oxidants and composition in GEOS-Chem"', Anonymous Referee #1, 03 Jul 2016
RC2: 'Review of Manuscript', Anonymous Referee #2, 18 Jul 2016
AC1: 'Response to interactive comments on “Global impacts of tropospheric halogens (Cl, Br, I) on oxidants and composition in GEOS-Chem” by T. Sherwen et al.', Tomás Sherwen, 12 Sep 2016

Peer-review completion

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

AR by Tomás Sherwen on behalf of the Authors (12 Sep 2016) Author's response Manuscript

ED: Publish subject to technical corrections (16 Sep 2016) by Rolf Sander

AR by Tomás Sherwen on behalf of the Authors (16 Sep 2016) Author's response Manuscript

Short summary

We present a simulation of tropospheric Cl, Br, I chemistry within the GEOS-Chem CTM. We find a decrease in tropospheric ozone burden of 18.6 % and a 8.2 % decrease in global mean OH concentrations. Cl oxidation of some VOCs range from 15 to 27 % of the total loss. Bromine plays a small role in oxidising oVOCs. Surface ozone, ozone sondes, and methane lifetime are in general improved by the inclusion of halogens. We argue that simulated bromine and chlorine represent a lower limit.