Articles | Volume 20, issue 11
Atmos. Chem. Phys., 20, 6521–6539, 2020
https://doi.org/10.5194/acp-20-6521-2020

Special issue: The Model Intercomparison Project on the climatic response...

Atmos. Chem. Phys., 20, 6521–6539, 2020
https://doi.org/10.5194/acp-20-6521-2020

Research article 05 Jun 2020

Research article | 05 Jun 2020

The potential impacts of a sulfur- and halogen-rich supereruption such as Los Chocoyos on the atmosphere and climate

Hans Brenna et al.

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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Hans Brenna on behalf of the Authors (10 Mar 2020)  Author's response    Manuscript
ED: Publish subject to minor revisions (review by editor) (31 Mar 2020) by Slimane Bekki
AR by Hans Brenna on behalf of the Authors (07 Apr 2020)  Author's response    Manuscript
ED: Publish as is (09 Apr 2020) by Slimane Bekki
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Short summary
The Los Chocoyos supereruption (84 000 years ago) in Guatemala was one of the largest volcanic events of the last 100 000 years. This eruption released enormous amounts of sulfur, which cooled the climate, as well as chlorine and bromine, which destroyed the ozone in the stratosphere. We have simulated this eruption by using an advanced chemistry–climate model. We found a collapse in the ozone layer lasting more than 10 years, increased surface–UV radiation, and a 30-year climate-cooling period.
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