Observations of spectral sky radiance and solar irradiance

Abstract

Ninety observation series of solar irradiance and angular distributions of sky radiance at different sun angles and wavelengths from ultraviolet to red are presented in tabular form. The observed distributions of spectral sky radiance do not compare well with the algorithm for clear sky luminance proposed by CIE. From the observations of polarized radiance it is found that polarization has little effect on the irradiance reflectance of the sea surface.