Large-scale particulate air pollution and chemical fingerprint of volcanic sulfate aerosols from the 2014–2015 Holuhraun flood lava eruption of Bárðarbunga volcano (Iceland)

Boichu, Marie; Favez, Olivier; Riffault, Véronique; Petit, Jean-Eudes; Zhang, Yunjiang; Brogniez, Colette; Sciare, Jean; Chiapello, Isabelle; Clarisse, Lieven; Zhang, Shouwen; Pujol-Söhne, Nathalie; Tison, Emmanuel; Delbarre, Hervé; Goloub, Philippe

doi:https://doi.org/10.5194/acp-19-14253-2019

Articles | Volume 19, issue 22

https://doi.org/10.5194/acp-19-14253-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-19-14253-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 22

Research article

| Highlight paper

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27 Nov 2019

Research article | Highlight paper |

| 27 Nov 2019

Large-scale particulate air pollution and chemical fingerprint of volcanic sulfate aerosols from the 2014–2015 Holuhraun flood lava eruption of Bárðarbunga volcano (Iceland)

Marie Boichu, Olivier Favez, Véronique Riffault, Jean-Eudes Petit, Yunjiang Zhang, Colette Brogniez, Jean Sciare, Isabelle Chiapello, Lieven Clarisse, Shouwen Zhang, Nathalie Pujol-Söhne, Emmanuel Tison, Hervé Delbarre, and Philippe Goloub

Supplement

https://doi.org/10.5194/acp-19-14253-2019-supplement

Video supplement

Animation of IASI SO2 column amount and altitude observations of the Holuhraun volcanic cloud dispersal in September and October 2014 M. Boichu https://doi.org/10.5446/40473

Animation of OMPS SO2 satellite observations of the Holuhraun volcanic cloud dispersal in September and October 2014 M. Boichu https://doi.org/10.5446/40472

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Short summary

This study, benefiting especially from recently developed mass spectrometry observations of aerosols, highlights unknown properties of volcanic sulfates in the troposphere. It shows their specific chemical fingerprint, distinct from those of freshly emitted industrial sulfates and background aerosols. We also demonstrate the large-scale persistence of the volcanic sulfate pollution over weeks. Hence, these results cast light on the impact of tropospheric eruptions on air quality and climate.