Author(s)

S. Tilmes, J. Rifimann, I. Jacobsen, J. Zimmermann

Abstract

From May to September 1999 quasi-operational forecasts of atmospheric trace gases for Central Europe were performed at the Deutscher Wetter- dienst (DWD) using a comprehensive model system developed in of a co- operation between the DWD and several universities. In parallel to the forecasting an operational real-time verification of model results was estab- lished using the measurements of the environmental agencies of Germany and its Federal States at about 360 sites. Subsequently an evaluation of the model performance for the complete summer season was carried out. The aim of this was twofold. On the one hand the focus lies on the climatologi- cal properties of the modelling system. On the other hand, monitoring the underlying observations is essential for t

Keywords