Ferraro, V.; Mele, M.; Marinelli, V. - In: Energy 37 (2012) 1, pp. 287-298
Data of sky luminance measured in Osaka (Japan) and in Arcavacata di Rende (Italy) during a year were analysed and compared with the values predicted by the Perez, Igawa and CIE calculation methods. The best predictions of absolute, relative and zenith luminances were obtained by the CIE method....