BRO AS A SINK FOR DIMETHYLSULFIDE IN THE MARINE ATMOSPHERE

Dimethylsulphide (DMS) is the major biogenic sulphur source gas. It is known to be oxidised by OH and NO3 to ultimately yield sulphate parti cles which are important in acid deposition and are also involved in t he atmospheric radiative balance. In the laboratory BrO has also been shown to oxidise DMS. Here I present atmospheric model calculations ba sed on inorganic Bromine measurements and find that oxidation by BrO i s a sink for DMS.