Dimethyl sulfide chemistry over the industrial era: comparison of key oxidation mechanisms and long-term observations
Ursula A. Jongebloed,Jacob I. Chalif,Linia Tashmim,William C. Porter,Kelvin H. Bates,Qianjie Chen,Erich C. Osterberg,Bess G. Koffman,Jihong Cole-Dai,Dominic A. Winski,David G. Ferris,Karl J. Kreutz,Cameron P. Wake,and Becky Alexander
Marine phytoplankton emit dimethyl sulfide (DMS), which forms methanesulfonic acid (MSA) and sulfate. MSA concentrations in ice cores decreased over the industrial era, which has been attributed to pollution-driven changes in DMS chemistry. We use a model to investigate DMS chemistry compared to observations of DMS, MSA, and sulfate. We find that modeled DMS, MSA, and sulfate are influenced by pollution-sensitive oxidant concentrations, characterization of DMS chemistry, and other variables.
Marine phytoplankton emit dimethyl sulfide (DMS), which forms methanesulfonic acid (MSA) and...