DRY DEPOSITION OF PARTICLES - IMPLICATIONS AND RECOMMENDATIONS FOR MAPPING OF DEPOSITION OVER EUROPE

This paper assesses current knowledge about the dry deposition of part icles with a locus on implications for Europe. General aspects of sour ces, physical characteristics and concentration data of particles in t he atmosphere are considered. Current modelling approaches For calcula ting the dry deposition of small and coarse particles are reviewed. Sh ortcomings and uncertainties of these models are presented. Measuremen ts of small- and large-particle deposition with various techniques are summarized together with their limitations. Finally, implications of scale aspects of particle dry deposition are treated with an emphasis on Europe, The overall conclusion is that knowledge on particle dry de position is still insufficient, both experimentally and theoretically, undermining reliable estimates of deposition fluxes over Europe.