Polarization measurements of the ring effect in the daytime sky

Details Polarization measurements of the ring effect in the daytime sky Polarization measurements of the ring effect in the daytime sky

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989p%26ss...37..627c&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 37, May 1989, p. 627-630.

Computer Science

10

Daytime, Fraunhofer Lines, Light Scattering, Polarimetry, Polarized Light, Rayleigh Scattering, Absorption Spectra, H Beta Line, Line Spectra, Raman Spectra, Solar Spectra

Scientific paper

Measurements of the H-beta line from the zenith sky reveal that the 'ring' component to the general Rayleigh scattered light, the filling-in of Fraunhofer lines in the spectrum of the daytime sky, is substantially polarized. The degree of polarization at these times is much higher than is predicted by rotational Raman scattering from air molecules (the mechanism favored as the origin of the ring intensity). These results contradict earlier claims, and suggest that some additional mechanism is necessary to account for the line filling-in effect.

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