Spectral And Bidirectional Measurements Of The Stokes Vector In The O(2)A Band And Their Interpretation

Bidirectional measurements of the downward radiance, degree and plane of polarization were performed with the high resolution spectrometers OVID and HiRES in the spectral range of 650 nm - 830 nm on two different days with meteorologically different conditions. The measurements have shown that the spectral and bidirectional behavior of the degree of polarization is different for these two days, especially in the 02A band. It can be assumed that this behavior is caused either by different aerosol types on these two days, or by different height distributions of the aerosol types, or by a combination of these two effects. To simulate the measured Stokes vector, first of all aerosol optical thickness and its height distribution are varied and different calculations are performed.