Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984icar...57...72p&link_type=abstract
Icarus (ISSN 0019-1035), vol. 57, Jan. 1984, p. 72-82.
Astronomy and Astrophysics
Astronomy
16
Aerosols, Albedo, Astronomical Models, Particle Size Distribution, Satellite Atmospheres, Titan, Inhomogeneity, Methane, Mie Scattering, Nitrogen, Optical Thickness, Refractivity, Saturn, Satellites, Titan, Aerosols, Distribution, Homogeneity, Models, Atmosphere, Particles, Altitude, Refractive Index, Mass, Flux, Albedo, Comparisons, Observations, Optical Properties, Depth, Visible Radiation, Methane, Temperature
Scientific paper
A model of Titan's aerosol is presented which allows the particle size to vary with height. The model assumes a refractive index appropriate to an ethylene polymer and a mass flux independent of height equal to the value derived from laboratory measurements. The free parameters of the model are determined by fitting to the observed geometric albedo at 4000 and 6000 A. A methane spectrum is derived which is in excellent agreement with observations. An aerosol optical depth of about 5 is found in the visible, with the particle radius varying from 0.01 to 8 microns. The presence of an optically thick methane cloud at the temperature minimum is indicated.
Bar-Nun Akiva
Giver Lawrence P.
Noy N.
Podolak Morris
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