Light scattering by the Martian dust analog, palagonite, modeled with ellipsoids
Journal article, 2013

We have investigated the suitability of the ellipsoidal model particles to mimic scattering by Martian dust particles by comparing simulations against laboratory data for palagonite, a Mars analog sample. By optimizing the shape distribution of ellipsoids, a very good match with a laboratory-measured scattering matrix was obtained. Even an equiprobable distribution of ellipsoids performed well. The asymmetry parameter and single-scattering albedo were found to depend on the assumed shape distribution as much as on the typical uncertainties associated with refractive indices and size, suggesting that shape is an important parameter that potentially influences remote retrievals of dust particle properties.

atmosphere

particles

spheroids

optical-properties

Author

S. Merikallio

Finnish Meteorological Institute (FMI)

T. Nousiainen

University of Helsinki

Michael Kahnert

Chalmers, Earth and Space Sciences, Global Environmental Measurements and Modelling

A. M. Harri

Finnish Meteorological Institute (FMI)

Optics Express

1094-4087 (ISSN)

Vol. 21 15 17972-17985

Aerosol Optics in Global Earth System Modelling (AGES)

Swedish Research Council (VR), 2011-10-26 -- 2014-10-26.

Subject Categories

Astronomy, Astrophysics and Cosmology

DOI

10.1364/oe.21.017972

More information

Latest update

5/23/2018