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Optical properties ...
Optical properties of light absorbing carbon aggregates mixed with sulfate: assessment of different model geometries for climate forcing calculations
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- Kahnert, Michael, 1968 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Nousiainen, T. (författare)
- Helsingin Yliopisto,University of Helsinki
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- Lindqvist, H. (författare)
- Helsingin Yliopisto,University of Helsinki
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- Ebert, M. (författare)
- Technische Universität Darmstadt
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(creator_code:org_t)
- 2012
- 2012
- Engelska.
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Ingår i: Optics Express. - 1094-4087 .- 1094-4087. ; 20:9, s. 10042-10058
- Relaterad länk:
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http://publications.... (primary) (free)
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- Light scattering by light absorbing carbon (LAC) aggregates encapsulated into sulfate shells is computed by use of the discrete dipole method. Computations are performed for a UV, visible, and IR wavelength, different particle sizes, and volume fractions. Reference computations are compared to three classes of simplified model particles that have been proposed for climate modeling purposes. Neither model matches the reference results sufficiently well. Remarkably, more realistic core-shell geometries fall behind homogeneous mixture models. An extended model based on a core-shell-shell geometry is proposed and tested. Good agreement is found for total optical cross sections and the asymmetry parameter.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
Nyckelord
- soot
- proceedings of the royal society of london series a-mathematical physical
- spheres
- absorption cross-sections
- aerosol-particles
- t-matrix
- 1990
- algorithms
- wavelength
- ang h
- radiative properties
- black carbon
- electromagnetic scattering
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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