Keywords: atmospheric dispersion modelling, operational dispersion model, sulphur dioxide, nitrogen oxides, emission inventory, urban air pollution, environmental impact assessment, Switzerland, modelling, air pollution, environmental pollution
Modelling surface pollutant concentrations in the city of Zurich
First results of a dispersion modelling study in the city of Zurich are presented. Surface pollutant concentrations (yearly averages) at several monitoring stations were modelled using the Danish OML-Multi operational model and compared with observations. For this purpose a detailed SO2 and NOx emission inventory for the year 1990 was constructed. The results show an average overestimation of the observed NOx concentrations of about 35% and an average overestimation of the observed SO2 concentrations of almost 50% at 24 sites distributed all over the area of investigation.