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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 15 — Jul. 29, 2013
  • pp: 17972–17985

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

S. Merikallio, T. Nousiainen, M. Kahnert, and A.-M. Harri  »View Author Affiliations

Optics Express, Vol. 21, Issue 15, pp. 17972-17985 (2013)

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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.

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OCIS Codes
(010.1110) Atmospheric and oceanic optics : Aerosols
(290.1310) Scattering : Atmospheric scattering
(290.5850) Scattering : Scattering, particles
(290.5855) Scattering : Scattering, polarization

ToC Category:

Original Manuscript: April 22, 2013
Revised Manuscript: June 12, 2013
Manuscript Accepted: July 12, 2013
Published: July 19, 2013

S. Merikallio, T. Nousiainen, M. Kahnert, and A.-M. Harri, "Light scattering by the Martian dust analog, palagonite, modeled with ellipsoids," Opt. Express 21, 17972-17985 (2013)

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