Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999kosis..37..168u&link_type=abstract
Kosmicheskie Issledovaniia, Tom 37, No. 2, p. 168 - 175
Astronomy and Astrophysics
Astronomy
Earth Atmosphere: Polarimetry, Earth Atmosphere: Scattering, Earth Atmosphere: Photometry
Scientific paper
This work is devoted to the study of solar light that experiences multiple scattering in the atmosphere at the twilight time, from the setting of the sun to nightfall. The work is based on polarimetric twilight sky observations at 3560 Å that were conducted in summer 1997 at the Astronomical Observatory at Odessa University. These data were used to determine the fraction of multiple-scattered light in the total sky background for various points of the sky, various depths of the sun under the horizon, and various polarization directions. A critical analysis is performed of some methods previously employed to take into account multiple scattering in twilight observations. The altitude distribution of small-sized amospheric aerosol particles in the stratosphere is also examined.
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