Polarization of the Sky

摘要: Based on full-sky imaging polarimetric measurements, in this chapter we demonstrate that the celestial distribution of angle polarization (or E-vector direction) skylight is a very robust pattern being qualitatively always same under all possible sky conditions. Practically only qualitative difference among clear, partly cloudy, overcast, foggy, smoky and tree-canopied skies occurs degree linear d: The higher optical thickness non-clear atmosphere, lower d skylight. We review here how well Rayleigh model describes clear cloudy skies. deal with patterns twilight, total-solar-eclipsed describe influences changed eclipsed insect orientation. consider ‘water-skies’ above Arctic open waters characteristics fogbows. Finally, change due to transmission through Snell’s window flat water surface.