Abstract

This report provides a description of the new parameterisation of the dry deposition processes that has been included in the Lagrangian acid deposition model of the Meteorological Synthesizing Centre - West of EMEP. The new parameterisation includes a state-of-art method for calculating dry deposition velocities that depend on the actual land use data. This method has been developed at the National Institute of Public Health and the Environment (RIVM), the Netherlands. The Implementation of the method in the EMEP model was carried out in cooperation with RIVM and the University of Bergen, Norway. In addition to the deposition velocity, a new procedure for the local-scale deposition correction developed earlier at the MSC-W was implemented in the model.