Light scattering by the Martian dust analog, palagonite, modeled with ellipsoids
Artikel i vetenskaplig tidskrift, 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.






S. Merikallio

Finnish Meteorological Institute

T. Nousiainen

Helsingin Yliopisto

Michael Kahnert

Chalmers, Rymd- och geovetenskap, Global miljömätteknik och modellering

A. M. Harri

Finnish Meteorological Institute

Optics Express

1094-4087 (ISSN)

Vol. 21 17972-17985

Aerosolpartiklarnas direkta klimatpåverkan i global jordsystemmodellering

Vetenskapsrådet (VR), 2011-10-26 -- 2014-10-26.


Astronomi, astrofysik och kosmologi