Determination of mass balances of chemically reactive air pollutants over baden-wurttemberg (F.R.G.)-Study for the regions around the cities of Stuttgart and feudenstadt

摘要

Mass balances of chemically reactive air pollutants have been calculated and analysed in a mesoscale area and two subregions, an industrialized urban centre with large emissions, and a rural region in a mountainous area with high percentage of agriculture and forestry. The vertical and horizontal dependencies of the contributions of different mass budget components are shown. Chemical reactions of ozone are only of importance inside the PBL where the recursors have the highest concentrations. In the upper layers the balance of ozone is dominated by horizontal and vertical advective processes. Horizontal differences are due to the different emission conditions which mainly influence the chemical transformation as well as due to the different topographical structures which influence the deposition and the balance of the different advective transport processes of ozone. To quantify the maximum effects of local emission reduction measures, a 100