The biogeochemistry of marine dimethylsulfide

Hopkins, Frances E., Archer, Stephen D., Bell, Thomas G., Suntharalingam, Parvadha and Todd, Jonathan D. (2023) The biogeochemistry of marine dimethylsulfide. Nature Reviews Earth and Environment, 4 (6). 361–376. ISSN 2662-138X

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Abstract

The marine trace gas dimethylsulfide (DMS) supplies sulfur to the atmosphere at a rate of 15–40 Tg S per year, contributing to the production of atmospheric sulfate aerosols that influence cloud radiative properties and thereby climate. The resulting climate cooling effect of DMS is an estimated −1.7 to −2.3 W m−2, which is similar in magnitude to the warming effect of anthropogenic CO2 emissions (1.83 ± 0.2 W m−2). In this Review, we describe the production and cycling of marine DMS and its fate in the atmosphere. Advances in molecular genetics and large-scale biogeochemical measurements have revealed the global prevalence of DMS-related processes, including in previously overlooked environments and organisms, such as sediment-dwelling bacteria. Most marine DMS (>90%) is degraded or consumed in the water column, but the remainder is emitted to the atmosphere, where it contributes to the formation of cloud condensation nuclei. Large uncertainties (up to ±10 W m−2) associated with the global impact of DMS emissions arise from the use of crudely defined biological parameters, such as total chlorophyll, in models. Constraining and modelling the biogeochemical processes that control DMS production are key to better estimating the influence of DMS on climate.

Item Type:	Article
Uncontrolled Keywords:	sdg 13 - climate action,sdg 14 - life below water ,/dk/atira/pure/sustainabledevelopmentgoals/climate_action
Faculty \ School:	Faculty of Science > School of Environmental Sciences Faculty of Science > School of Biological Sciences
UEA Research Groups:	Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences Faculty of Science > Research Groups > Wolfson Centre for Advanced Environmental Microbiology Faculty of Science > Research Groups > Molecular Microbiology
Related URLs:	http://www.scopus.com/inward/record.url?... https://doi.org/10.1038/s43017-023-00428...
Depositing User:	LivePure Connector
Date Deposited:	25 Jun 2025 15:30
Last Modified:	14 Jul 2025 12:31
URI:	https://ueaeprints.uea.ac.uk/id/eprint/99722
DOI:	10.1038/s43017-023-00428-7

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