Measurement of heterogeneous chemical processes relevant to aerosol surfaces and211 trace gases active in the marine environment. Final report, August 1, 1991 to 211 June 30, 1998

摘要

Ocean produced reduced sulfur compounds including dimethylstilde (DMS), hydrogen211u001esulfide (H2S) carbon disulfide (CS2), methyl memaptan (CH3CH) and carbonyl 211u001esulfide (OCS) deliver a sulfur burden to the atmosphere which is roughly equal to 211u001esulfur oxides produied by fossil fuel combustion. These species and their 211u001eoxidation products dimethyl sulfoxide (DMSO), dimethyl sulfone (DMSOZ) and 211u001emethane sulfonic acid (MSA) dominate aerosol and CCN production in clean marine 211u001eair. Furthermore, oxidation of reduced sulfur species will be strongly influenced 211u001eby NOx/O3 chemistry as well as halogen and ammonia chemistry in marine 211u001eatmospheres. The multiphase chemical processes for these species must be 211u001eunderstood in order to study the evolving role of combustion produced sulfur 211u001eoxides over the oceans.