Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 1
Articles | Volume 26, issue 1
https://doi.org/10.5194/acp-26-313-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-313-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 1
Research article
 | 
07 Jan 2026
Research article |  | 07 Jan 2026

Fine-scale fluctuations of PM1, PM2.5, PM10 and SO2 concentrations caused by a prolonged volcanic eruption (Fagradalsfjall 2021, Iceland)

Rachel C. W. Whitty, Evgenia Ilyinskaya, Melissa A. Pfeffer, Ragnar H. Thrastarson, Þorsteinn Johannsson, Sara Barsotti, Tjarda J. Roberts, Guðni M. Gilbert, Tryggvi Hjörvar, Anja Schmidt, Daniela Fecht, and Grétar G. Sæmundsson

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Short summary
We studied air pollution caused by volcanic emissions, a poorly understood hazard in populated areas. We present a large dataset of high-quality measurements of sulfur dioxide gas and fine aerosol particulate matter collected during ongoing series of eruptions in Iceland. We revealed rapid, localized changes in pollutant concentrations at ground level, with implications for assessing population exposure during volcanic eruptions.
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