CAOSP abstracts, Volume: 29, No.: 1, year: 1999
- Author(s): KOCIFAJ, M.
- Journal: Contributions of the Astronomical Observatory Skalnate Pleso,
vol. 29, no. 1, p. 14-30.
- Date: 04/1999
- Title: The contribution to the inverse scattering problem in the Martian atmosphere
- Keyword(s): DUST PARTICLES, MARTIAN ATMOSPHERE, RADIATION SCATTERING
- Pages: 14 -- 30
Abstract:
The accessible optical data for the Martian atmosphere are theoretically
analyzed. Fast evaluation of radiative transfer in the atmosphere is based on
Eddington's approximation, a two-stream method. The results show a feasible
profile of radiative fluxes in the Martian environment and confirm the
possibility of identification of large submicron particles using this approach.
To get more precise results, the MRSM (multiple radiation scattering model) was
used. The improvement of accelerated MRSM is included. The scattering problem
formulated in terms of upward and downward radiance structure is applied to get
information about the particle size distribution. Expressions for spectral
radiances are simplified to the form of Fredholm integral equations of the
first kind, which are solvable by special methods. The analysis of the observed
spectral dependence of particle optical thickness in the visible spectrum
brings a wide particle size distribution with a modal radius larger than
0.2 micrometers.
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