PRELIMINARY-ANALYSIS OF ATMOSPHERIC SCAVENGING PROCESSES IN THE INDUSTRIAL REGION OF CUBATAO, SOUTHEASTERN BRAZIL

During a German-Brazilian research project on vegetation damage, atmos pheric scavenging processes were investigated, considering transport a nd local emissions. For this goal, radar precipitation data was evalua ted together with analyses of fractionated rain samples of one stratif orm and one convective rain event The temporal variation of pollutant concentration in rain water and the meteorological conditions were com pared for both rain events at two stations: one at the top of the Serr a do Mar mountain ridge (similar to 900 m) with minor influence of loc al emissions and one at sea level, close to the high indutrialized are a of Cubatao. At the station close to the industrial plants, major inf luence of the local sources on wet deposition was determined. During t he stratiform rain event, an additional influence of transport could b e observed. On the top of the Serra do Mar, major influence of the loc al sources could only be observed during the convective rain event, wh ile transport is mainly responsible for wet deposition during the stra tiform event.