EMEP Eulerian acid deposition model and its applications

The three-dimensional EMEP Eulerian grid model is under development at MSC-W. The application of the model is to simulate the atmospheric transport and deposition of acid pollutants in Europe's atmosphere with ca. 50 x 50 km² horizontal resolution. The Eulerian model replaces the traditional EMEP Lagrangian-trajectory model, used for routine calculations of country-to-country pollutant exchange. A brief model description is given as well as the estimation of model performance for 1996 data. The application of EMEP modeling results within the integrated assessment of the transboundary air pollution is described by taking as an example the second sulfur protocol of the Convention on Long-Range Transboundary Air Pollution, where results from an earlier EMEP Lagrangian model were used.