Impacts of stratospheric sulfate geoengineering on tropospheric ozone

Xia, Lili; Nowack, Peer J.; Tilmes, Simone; Robock, Alan

doi:https://doi.org/10.5194/acp-17-11913-2017

Articles | Volume 17, issue 19

https://doi.org/10.5194/acp-17-11913-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

The Geoengineering Model Intercomparison Project (GeoMIP):...

https://doi.org/10.5194/acp-17-11913-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 17, issue 19

Research article

|

09 Oct 2017

Research article |

| 09 Oct 2017

Impacts of stratospheric sulfate geoengineering on tropospheric ozone

Lili Xia, Peer J. Nowack, Simone Tilmes, and Alan Robock

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Final revised paper (published on 09 Oct 2017)
Supplement to the final revised paper
Preprint (discussion started on 19 May 2017)
Supplement to the preprint

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Referee comment to Xia et al', Ulrike Niemeier, 06 Jun 2017
RC2: 'review of "Impacts of Stratospheric Sulfate Geoengineering on Tropospheric Ozone" by Lili Xia et al.', Anonymous Referee #2, 07 Jul 2017
RC3: 'Review comments', Anonymous Referee #3, 23 Jul 2017
AC1: 'ResponseToReviewers', Lili Xia, 22 Aug 2017

Peer-review completion

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

AR by Lili Xia on behalf of the Authors (22 Aug 2017) Author's response Manuscript

ED: Publish as is (25 Aug 2017) by Lynn M. Russell

AR by Lili Xia on behalf of the Authors (30 Aug 2017)

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Short summary

Ozone is a key air pollutant. We model two geoengineering schemes, stratospheric sulfur injection and solar irradiance reduction, to compare their impacts on atmospheric ozone concentrations. With the nearly identical global mean surface temperature reduction, solar dimming increases global average surface ozone concentration, while sulfate injection decreases it. This difference is due to different stratosphere–troposphere exchange of ozone and tropospheric ozone chemistry in the two scenarios.