Earth System Science Data
Earth System Science Data
Earth System Science Data
Articles | Volume 18, issue 9
Articles | Volume 18, issue 9
https://doi.org/10.5194/essd-18-6667-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-18-6667-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 9
Data description article
 | 
10 Sep 2026
Data description article |  | 10 Sep 2026

A 19-year record of atmospheric sulphur dioxide (SO2) derived from IASI measurements

Lieven Clarisse, Bruno Franco, Lorenzo Fabris, Nicolas Theys, Juliette Hadji-Lazaro, Daniel Hurtmans, Cathy Clerbaux, and Pierre Coheur

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Latest update: 11 Sep 2026
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Short summary
We present a 19-year (2007–2026) global record of atmospheric sulphur dioxide (SO2) abundances and plume altitudes measured twice a day from space by the Infrared Atmospheric Sounding Interferometers (IASI). The first part of the paper covers the retrieval methodology and detailed comparisons with other satellite measurements. The second part presents an overview of the dataset, offering in particular an analysis of the temporal evolution and vertical distribution of volcanic SO2.
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