A simple method to calculate average spectra of clear sky solar radiation and their dependence on the atmospheric parameters

2014 There are several models to compute instantaneous clear sky solar radiation and they require the precise knowledge of meteorologically relevant parameters as the turbidity and the optical thickness of water vapour and ozone. However, in many cases only a mean radiance spectrum is wanted. In this paper we introduce and analyse a simplified method which permits to calculate the daily average radiance spectrum with an error less than 2 %. The dependence of the daily radiance spectrum on the atmospheric parameters and on the season is also analysed. Revue Phys. Appl. 20 (1985) 109-120 FÉVRIER 1985, PAGE Classification Physics Abstracts 94.40