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Indexed by:会议论文

Date of Publication:2010-10-22

Included Journals:EI、CPCI-S、SCIE、Scopus

Volume:483

Page Number:770-774

Key Words:Patterns of skylight polarization; Atmospheric conditions; Measurement

Abstract:A skylight polarization measurement system has been designed. With the measurement system, the patterns of skylight polarization measured at four kinds of atmospheric conditions at the spectral range 450 similar to 475 nm are presented. It is obvious that qualitatively the patterns of skylight polarization in sunny skies are in agreement with Rayleigh model. The stronger atmospheric turbidity, the greater disturbance to the patterns of skylight polarization appears in the atmosphere. The cloudy sky has terrible patterns of skylight polarization, this is mainly because it is overclouded and the sunlight is occluded completely. The degree of the skylight polarization P and the angle of the skylight polarization chi are the greatest in the clear sky. However, some meteorologic factors can disturb the polarized characteristics of skylight. Cloud layer and dust decrease P of skylight polarization and disturb chi of skylight polarization at different atmospheric conditions.