Finite sun effect on the interpretation of solar aureole

Details Finite sun effect on the interpretation of solar aureole Finite sun effect on the interpretation of solar aureole

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apopt..20.2806b&link_type=abstract

Applied Optics, vol. 20, Aug. 15, 1981, p. 2806-2810.

Physics

Optics

5

Aerosols, Atmospheric Scattering, Rayleigh Scattering, Solar Radiation, Wave Diffraction, Atmospheric Optics, Mie Scattering, Particle Size Distribution, Plane Waves, Radiance, Radiation Effects, Radiation Measurement

Scientific paper

Although it is usually assumed that solar radiation falls on the earth's atmosphere in the form of plane waves, the finite angular size of the solar disk contradicts this assumption. For most purposes, this finite sun effect on computed or measured radiation quantities is negligible. However, in the region of the solar aureole, which is dominated by aerosol diffraction scattering, measurable effects may be obtained. In this paper, we show that the finite sun effect is related to derivatives of the scattering phase function and that a 1% effect may be obtained close to the sun if enough large particles are present in the atmosphere.

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