Contribution of expanded marine sulfur chemistry to the seasonal variability of dimethyl sulfide oxidation products and size-resolved sulfate aerosol

Tashmim, Linia; Porter, William C.; Chen, Qianjie; Alexander, Becky; Fite, Charles H.; Holmes, Christopher D.; Pierce, Jeffrey R.; Croft, Betty; Ishino, Sakiko

doi:https://doi.org/10.5194/acp-24-3379-2024

Articles | Volume 24, issue 6

https://doi.org/10.5194/acp-24-3379-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-24-3379-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 24, issue 6

Research article

|

19 Mar 2024

Research article |

| 19 Mar 2024

Contribution of expanded marine sulfur chemistry to the seasonal variability of dimethyl sulfide oxidation products and size-resolved sulfate aerosol

Linia Tashmim, William C. Porter, Qianjie Chen, Becky Alexander, Charles H. Fite, Christopher D. Holmes, Jeffrey R. Pierce, Betty Croft, and Sakiko Ishino

Data sets

ATom: L2 Measurements from NOAA ToF Chemical Ionization Mass Spectrometer, Version 2 P. R. Veres et al. https://doi.org/10.3334/ORNLDAAC/1921

ATom: Sulfur Dioxide by Laser Induced Fluorescence (LIF-SO2) for ATom-4 Campaign A. W. Rollins https://doi.org/10.3334/ORNLDAAC/1890

Short summary

Dimethyl sulfide (DMS) is mostly emitted from ocean surfaces and represents the largest natural source of sulfur for the atmosphere. Once in the atmosphere, DMS forms stable oxidation products such as SO₂and H₂SO_4, which can subsequently contribute to airborne particle formation and growth. In this study, we update the DMS oxidation mechanism in the chemical transport model GEOS-Chem and describe resulting changes in particle growth as well as the overall global sulfur budget.