6533b822fe1ef96bd127d64e
RESEARCH PRODUCT
The optical constants of atmospheric aerosol particles in the 7.5–12 ?m spectral region
Klaus Fischersubject
Atmospheric ScienceJet (fluid)Materials science010504 meteorology & atmospheric sciencesScatteringbusiness.industryOceanography01 natural sciencesMolecular physicsAerosolOpticsThermal radiationParticlebusinessDispersion (chemistry)Absorption (electromagnetic radiation)Refractive indexPhysics::Atmospheric and Oceanic Physics0105 earth and related environmental sciencesdescription
Thin films of atmospheric aerosol particles which have been collected by an automatic jet impactor are used to obtain the real and imaginary part of the mean complex refractive index of aerosol particles of various types in the 7.5–12 ?m spectral region. A dispersion analysis of the measured ir-spectra of absorption of the particle films is performed. By applying the Lorentz theory of continuous dielectrics to the particle films a mathematical relation between the optical constants of the particle films and those of the aerosol particles themselves is obtained. The resulting complex refractive indices are applied to Mie computations to indicate the importance of scattering and absorbing aerosol particles to the radiative heat transfer in the longwave window of the atmosphere. DOI: 10.1111/j.2153-3490.1976.tb00675.x
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-12-29 | Tellus A |