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.
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.
the Creative Commons Attribution 4.0 License.
Research article
| 
19 Aug 2021
Research article |
| 19 Aug 2021
| 19 Aug 2021
Observation and modelling of ozone-destructive halogen chemistry in a passively degassing volcanic plume
Laboratoire de Physique et de Chimie de l’Environnement et de l’Espace, CNRS, Université d’Orléans, Orléans, France
LATMOS/IPSL, Sorbonne Université, UVSQ, CNRS, Paris, France
Department of Chemistry, University of Aberdeen, Aberdeen, UK
Tjarda Roberts
Laboratoire de Physique et de Chimie de l’Environnement et de l’Espace, CNRS, Université d’Orléans, Orléans, France
Slimane Bekki
LATMOS/IPSL, Sorbonne Université, UVSQ, CNRS, Paris, France
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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.
Many different chemical reactions happen when the gases from a volcano mix with air, but what...
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