Physics
Scientific paper
Feb 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002kfnt...18...33d&link_type=abstract
Kinematika i Fizika Nebesnykh Tel, vol. 18, no. 1, p. 33-42
Physics
Scientific paper
Using spherical and oblate spheroidal particles, we investigated the influence of the shape of the dust aerosol on the imaginary part of the refractive index ni obtained from the photometric observations carried out during the highest activity period in the global dust storm in 1971. A similar analysis for high transparency periods was performed relative to the estimates of the mean particle radius r0 and the optical thickness of the dust layer τ0 which were obtained from polarimetric measurements. The adopted shape of aerosol was found to affect these optical parameters. Namely, the values of ni, r0, and τ0 obtained for spheroidal particles proved to be approximately a factor of 2 greater than those for spheres. Anyway, they remain to be much lower than the estimates found for these parameters from space experiments. So far, the origin of such a discrepancy is not clear.
Dlugach Zh. M.
Mishchenko Michael I.
Morozhenko A. V.
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