The tropospheric oxidation of dimethyl sulfide: A new source of carbonyl sulfide

Details The tropospheric oxidation of dimethyl sulfide: A new source of carbonyl sulfide The tropospheric oxidation of dimethyl sulfide: A new source of carbonyl sulfide

Nov 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21.2389b&link_type=abstract

Geophysical Research Letters, Volume 21, Issue 22, p. 2389-2392

Mathematics

Logic

21

Atmospheric Composition And Structure: Biosphere/Atmosphere Interactions, Oceanography: Biological And Chemical: Organic Marine Chemistry, Atmospheric Composition And Structure: Troposphere-Composition And Chemistry

Scientific paper

In laboratory investigations of the gas-phase OH initiated oxidation of dimethyl sulfide (DMS: CH3SCH3) at room temperature the formation of SO2, dimethyl sulfoxide (DMSO: CH3SOCH3), and OCS have been observed. A yield of 0.7+/-0.2 % S was measured for OCS. These new results represent a hitherto unknown and quite considerable iin situ atmospheric source of OCS. Based on the global DMS source strength as given in the literature and provided that the results from the laboratory study are valid under atmospheric conditions we estimate a contribution in the range 0.10 to 0.28 Tg (OCS) yr-1 from the gas-phase atmospheric photooxidation of DMS to the global OCS budget.

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