The tropospheric oxidation of dimethyl sulfide: A new source of carbonyl sulfide
Authors:
- I. BarnesIBI. Barnes
- K. H. BeckerKBK. H. Becker
- I. PatroescuIPI. Patroescu
- 1 November 1994
- journal article
- Published by American Geophysical Union (AGU) in Geophysical Research Letters
- Vol. 21 (22) , 2389-2392
Abstract
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 in 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.Keywords
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