Articles | Volume 19, issue 22
Atmos. Chem. Phys., 19, 14253–14287, 2019
https://doi.org/10.5194/acp-19-14253-2019
Atmos. Chem. Phys., 19, 14253–14287, 2019
https://doi.org/10.5194/acp-19-14253-2019

Research article 27 Nov 2019

Research article | 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 et al.

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.
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