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The contribution of atmospheric aerosols to the Martian opposition effect*
Published online by Cambridge University Press: 14 August 2015
Abstract
Mie scattering calculations have been made for atmospheric aerosols having various indices of refraction to determine their possible contribution to a Martian opposition effect, such as that reported by O'Leary in 1967. Neither substances with a real index between 1.20 and 1.50, such as ice, water, or solid CO2, nor highly absorbing materials, such as limonite, can produce the observed effect. Submicron-sized spherical particles with refractive indices of 1.55 to 2.00 do, on the other hand, exhibit a marked increase in reflectivity at small phase angles and might be responsible for the enhanced brightness at the shorter wavelengths.
- Type
- Part II: Mars
- Information
- Symposium - International Astronomical Union , Volume 40: Planetary Atmospheres , 1971 , pp. 166 - 169
- Copyright
- Copyright © Reidel 1971