ADVECTION OF SULFUR-DIOXIDE OVER THE WESTERN ATLANTIC-OCEAN DURING CITE-3

During the NASA Chemical Instrumentation Test and Evaluation 3 sulfur intercomparison over the western Atlantic Ocean, five techniques for t he determination of sulfur dioxide were evaluated. The response times of the techniques varied from 3 to 30 min. Based n the ensemble of mea surements reported. it was clear that advection of SO2 from the North American continent occurred in the boundary layer (altitude < 1 km) wi th only one exception. The vertical distribution of SO2 above the boun dary layer for the northern and southern Atlantic Ocean was remarkably similar during this experiment.