Ellasjøen, Bear Island - A mass balance study of a high contaminated Arctic area

The overall objective of this work is to contribute significant new information to the understanding of contaminant pathways in the Arctic hydrosphere and to provide a better understanding of contaminant focusing in a sensitive polar environment. This will be accomplished through the development of a comprehensive mass balance study of the atmospheric loadings of PCBs and other contaminants to the Lake Ellasjøen watershed to determine the seasonal importance of atmospheric deposition on a remote polar island. Further, effort will be directed at assessing the relative importance of various source regions of contaminants to the island through an evaluation of contaminant signatures and back trajectories of pollution events. This year we will continue to collect material from snow, rain, fog, air and weather data.
We have planned 3 field periods to Bjørnøya in 2003. The purpose of the fieldwork is to collect snow-, rain-, fog-, air-samples and weather data through the year. The sample periods will be 1 month for snow, rain and fog. The air-sampling program will be carried out in the same way as last year with sampling every week or second week. We will take air samples every week from May to August.