Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 21, issue 14
Articles | Volume 21, issue 14
https://doi.org/10.5194/acp-21-11379-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-21-11379-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 14
Research article
 | 
28 Jul 2021
Research article |  | 28 Jul 2021

Modeling study of the impact of SO2 volcanic passive emissions on the tropospheric sulfur budget

Claire Lamotte, Jonathan Guth, Virginie Marécal, Martin Cussac, Paul David Hamer, Nicolas Theys, and Philipp Schneider

Supplement

https://doi.org/10.5194/acp-21-11379-2021-supplement

Data sets

Multi-Satellite Volcanic Sulfur Dioxide L4 Long-Term Global Database V3 Simon Carn https://doi.org/10.5067/MEASURES/SO2/DATA405

A decade of global volcanic SO2 emissions measured from space S. Carn, V. Fioletov, C. McLinden, C. Li, and N. Krotkov https://doi.org/10.1038/srep44095

OMI/Aura Sulphur Dioxide (SO2) Total Column 1-orbit L2 Swath 13x24 km V003 Can Li, Nickolay A. Krotkov, Peter Leonard, and Joanna Joiner https://doi.org/10.5067/Aura/OMI/DATA2022

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Short summary
Improvements are made in a global chemical transfer model by considering a new volcanic SO2 emissions inventory, with more volcanoes referenced and more information on the altitude of injection. Better constraining volcanic emissions with this inventory improves the global, but mostly local, tropospheric sulfur composition. The tropospheric sulfur budget shows a nonlinearity to the volcanic contribution, especially to the sulfate aerosol burden and sulfur wet deposition.
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