INTEGRATED ASSESSMENT OF EMISSION CONTROL SCENARIOS, INCLUDING THE IMPACT OF TROPOSPHERIC OZONE

The RAINS (Regional Air Pollution INformation and Simulation) model wa s developed at IIASA as an integrated assessment tool to assist policy advisors in evaluating options for reducing acid rain. In recent year s, the European implementation of this model has been used to support the negotiations on an updated, effect-based Sulphur Protocol under th e Convention on Long-range Transboundary Air Pollution. The developmen t of future strategies for reducing the environmental damage caused by air pollutants requires a multi-pollutant multi-effect approach. In t his context the RAINS model is being further developed to include ozon e. This paper outlines the development of an integrated assessment mod el for tropospheric ozone, which combines information on the emissions of ozone precursors (NOx and VOCs), the available control technologie s and abatement costs, the formation and transport of ozone and its en vironmental effects in Europe.