Operational method for deriving high resolution direct normal irradiance from satellite data

摘要: Abstract Ground-based measurements of solar beam irradiance are expensive and rarely available especially in the sunbelt countries, favourable regions for concentrating energy techniques. A method based on satellite data is presented that calculates hourly direct normal large many years with high spatial resolution independently from ground measurements. The attenuation due to scattering absorption cloud-free atmosphere calculated by a clear-sky broadband parameterisation model. It uses ozone optical depth Total Ozone Mapping Spectrometer, aerosol Global Aerosol Climatology Project water vapour reanalysis National Centers Environmental Prediction. Attenuation clouds taken into account cloud index derived infrared visible channel geostationary Meteosat weather satellites. As have strongest impact at ground, dominates overall temporal resolution. algorithm provides related nominal 5 × 5 km 2 Meteosat.