The aim of this work is to derive appropriate irradiance data from Meteosat imagery. For this purpose the Heliosat method is applied. It is a statistical approach to calculate global irradiance values from satellite data. The method is extended to account for diffuse irradiance. For the determination of global irradiance a clearsky model which accounts for atmospheric turbidity is introduced.
Special emphasis is on the analysis of the method s accuracy.
Notes By MMM-diss .