Overvåking av luft- og nedbørkvalitet i grenseområdene i Norge og Russland. April-september 1991.

A comprehensive study of occurence and extent of air pollution along the Russian border in Sør-Varanger started in 1988. From april 1991 the measurement programme includes air quality, meteorological conditions and precipitation chemistry. The highest SO2-concentrations in Norway are measured in this area. The nickel works in Nikel and Zapoljarnij are the principal sources of SO2 in the area.