Articles | Volume 24, issue 20
https://doi.org/10.5194/acp-24-11717-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-24-11717-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
21 Oct 2024
Research article |
| 21 Oct 2024
| 21 Oct 2024
Predicting hygroscopic growth of organosulfur aerosol particles using COSMOtherm
International Laboratory for Air Quality and Health, School of Earth and Atmospheric Sciences, Queensland University of Technology, Brisbane, QLD 4001, Australia
Angela Buchholz
Department of Technical Physics, University of Eastern Finland, Kuopio 70210, Finland
Department of Chemistry, Nanoscience Center, University of Jyväskylä, Jyväskylä 40014, Finland
now at: Atmospheric Research Centre of Eastern Finland, Finnish Meteorological Institute, Kuopio 70211, Finland
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Robin Wollesen de Jonge, Jonas Elm, Bernadette Rosati, Sigurd Christiansen, Noora Hyttinen, Dana Lüdemann, Merete Bilde, and Pontus Roldin
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This study presents a detailed analysis of the OH-initiated oxidation of dimethyl sulfide (DMS) based on experiments performed in the Aarhus University Research on Aerosol (AURA) smog chamber and the gas- and particle-phase chemistry kinetic multilayer model (ADCHAM). We capture the formation, growth and chemical composition of aerosols in the chamber setup by an improved multiphase oxidation mechanism and utilize our results to reproduce the important role of DMS in the marine boundary layer.
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Short summary
Evaluating organosulfur (OS) hygroscopicity is important for assessing aerosol–cloud climate interactions in the post-fossil-fuel future, when SO2 emissions decrease and OS compounds become increasingly important. Here a state-of-the-art quantum-chemistry-based method was used to predict the hygroscopic growth factors (HGFs) of a group of atmospherically relevant OS compounds and their mixtures with (NH4)2SO4. A good agreement was observed between their model-estimated and experimental HGFs.
Evaluating organosulfur (OS) hygroscopicity is important for assessing aerosol–cloud climate...
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