Global Impacts of Marine Methanethiol Emissions and Chemistry in the Atmosphere.

ABSTRACT: Oceanic emissions of dimethyl sulfide (DMS) have long been known to influence aerosol particle composition, cloud condensation nuclei (CCN) concentration, and Earth's radiative budget. However, the impact of oceanic emissions of methanethiol (MeSH), a sulfur compound produced by the same oceanic precursor as DMS, has been relatively less explored. The gas-phase oxidation of MeSH has a higher effective yield of SO₂ and a shorter oxidative lifetime compared to DMS, highlighting the relevance of this pathway for the modeled representation of particle formation, growth, and CCN abundance in the marine atmosphere. Here, we use the global chemical transport model GEOS-Chem to explore possible scenarios representative of specific environmental conditions and MeSH emission schemes based

SUBMITTER: Tashmim L 

PROVIDER: S-EPMC12490017 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature