Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 21, issue 16
Articles | Volume 21, issue 16
https://doi.org/10.5194/acp-21-12413-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-21-12413-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 16
Research article
 | 
19 Aug 2021
Research article |  | 19 Aug 2021

Observation and modelling of ozone-destructive halogen chemistry in a passively degassing volcanic plume

Luke Surl, Tjarda Roberts, and Slimane Bekki

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Short summary
Many different chemical reactions happen when the gases from a volcano mix with air, but what effects do they have? We present aircraft measurements which show that there is less ozone within the plume of Etna than outside it. We have also made a computer model of this chemistry. This model can reproduce the effects seen when halogens (bromine and chlorine) are included in the volcanic emissions. We look closely at the simulation to discover how complicated halogen reactions cause ozone loss.
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