Abstract: The concept of standardized Linke's turbidity factor TLAM2 allows the conversion of the usual TL values, which exhibit virtual diurnal variations into new ones, which are strictly representative of the atmospheric turbidity ...

Abstract: A set of 509 direct solar irradiance spectra, carefully measured over one year, is checked against spectral irradiances computed from five updated transmittance models. The wavelengths under investigation range from 290 ...