Statistics – Computation
Scientific paper
Apr 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esasp.338..389s&link_type=abstract
In its Symposium on Titan p 389-395 (SEE N92-32348 23-91)
Statistics
Computation
1
Aerosols, Atmospheric Models, Light Scattering, Polarized Radiation, Titan, Data Processing, Haze, S Matrix Theory
Scientific paper
Studies of the intensity and polarization curve of Titan which were carried out to find the properties of the Titan haze are discussed. For several types of model atmospheres the disk integrated intensity and polarization were computed, using the doubling/adding method and a nest method to integrate the reflected light over the visible disk. In these computations the scattering matrix aerosol particles was correctly taken into account. Comparison with the Pioneer 11 and Voyager 2 measurements of the intensity and polarization phase curve of Titan led to a three layer atmospheric model: (1) a top haze layer consisting of small (0.03 micrometers radius) tholin spheres with optical thickness 0.1 at wavelength 0.648 micrometers; (2) next, a main haze layer consisting of nonspherical tholin particles (prolate spheroids, axes ratio 4:1) with volume equivalent radius of 0.15 micrometers and optical thickness 1.0 at wavelength 0.648 micrometers; and (3) a nitrogen gas layer at the bottom. The fit to the Pioneer 11 data was good, but to the Voyager 2 data no fit could be found.
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