DIMETHYLSULFIDE IN MARINE AIR AT CAPE-GRIM, 41-DEGREES-S

Atmospheric dimethylsulfide measurements made in marine air at Cape Gr im, Tasmania, have been combined with a simple photochemical box model to provide estimates of monthly mean flux of dimethylsulfide from the Southern Ocean upwind of Cape Grim. The nux estimates for midsummer a gree remarkably well with the independent estimates made for the latit ude of Cape Grim based on oceanic surface water data and simple sea-ai r transport models. However, for midwinter the flux estimates made her e, based on atmospheric dimethlysulfide data, are as much as an order of magnitude lower than those made elsewhere based on oceanic surface water data.