Abstract
Sulphur concentrations in precipitation as sulphate and in air as sulphur dioxide were determined from October 1991 (May 1992), respectively, to December 1995. The total sulphur deposition was calculated from sum of the wet and dry deposition, using the concentration of sulphate and precipitation volume and the concentration and deposition velocity of sulphur dioxide, determined with the micrometeorological gradient method. The concentration of sulphur in precipitation decreased over the period by about 40% and in air about 70%. The wet deposition decreased over the period by about 30%. However there was no decrease in dry deposition despite the reduction in SO2 concentrations because the deposition velocity varied from 0.16 cm s-1 to 0.37 cm s-1 during the period. Therefore no trend was observed in the total sulphur deposition.
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