Models for integrated and differential scattering optical properties of encapsulated light absorbing carbon aggregates
Artikel i vetenskaplig tidskrift, 2013

Optical properties of light absorbing carbon (LAC) aggregates encapsulated in a shell of sulfate are computed for realistic model geometries based on field measurements. Computations are performed for wavelengths from the UV-C to the mid-IR. Both climate- and remote sensing-relevant optical properties are considered. The results are compared to commonly used simplified model geometries, none of which gives a realistic representation of the distribution of the LAC mass within the host material and, as a consequence, fail to predict the optical properties accurately. A new core-gray shell model is introduced, which accurately reproduces the size- and wavelength dependence of the integrated and differential optical properties.

p577

electromagnetic scattering

ang h

proceedings of the royal society-mathematical and physical sciences

wavelength

v430

discrete-dipole approximation

soot

morphology

black carbon

t-matrix

1990

aerosol-particles

in-situ

absorption

Författare

Michael Kahnert

Chalmers, Rymd- och geovetenskap, Global miljömätteknik och modellering

T. Nousiainen

Helsingin Yliopisto

H. Lindqvist

Helsingin Yliopisto

Optics Express

1094-4087 (ISSN)

Vol. 21 7974-7993

Ämneskategorier

Fysik

DOI

10.1364/OE.21.007974