Recent studies have shown a connection between seasonal phytoplankton activity and generation of atmospheric sulphur products known to contribute towards acid rain . Although anthropogenic sources of sulphur dioxide and sulphate dominate in acid &position on land surfaces, for some less industrialised areas of Europe, during the summer, there may be a significant contribution from natural marine sources. This paper describes briefly the nature of the marine processes thought to be taking place and survey cruises in the Southern North Sea used to collect data. Such field studies pose peculiar difficulties in both collection and processing of data. A critique on the nature of data generated under such conditions is included and some implications drawn for visualisation and interpretation techniques. Some initial results, with basic interpolation and approximation techniques, are compared. The paper concludes with suggestions on the way in which the research projects described are intended to befurther developed.