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Optical characteristics of composite ellipsoidal solid-phase aerosols with variable carbon content

DOI: 10.1615/ICHMT.2007.ConfElectromagLigScat.230
pages 81-84

Miroslav Kocifaj
Astronomical Institute, Slovak Academy of Sciences, Dúbravská 9, 845 04 Bratislava, Slovak Republic

Gorden Videen
Astronomical Institute "Anton Pannekoek", University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands; Space Science Institute, 4750 Walnut St. Suite 205, Boulder CO 80301; U.S. Army Research Laboratory AMSRL-CI-EE, Adelphi, USA

Résumé

The optical behavior of three-component carbonaceous ellipsoidal aerosols is analyzed. Compared to compact ellipsoids, the fragmented particles show enhanced backscatter and linear polarization. Employment of EMTs may lead to overestimation of both the asymmetry parameter and efficiency factor for absorption, but bulk Qext is only slightly influenced. Typically the compact particles, whose absorbing component has the largest air-carbon interface, absorb less efficiently than particles with random fragmentation.

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