The far ultraviolet reflection spectrum of Uranus - Results from the Voyager encounter

Details The far ultraviolet reflection spectrum of Uranus - Results from the Voyager encounter The far ultraviolet reflection spectrum of Uranus - Results from the Voyager encounter

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989icar...77..439y&link_type=abstract

Icarus (ISSN 0019-1035), vol. 77, Feb. 1989, pt. 1, p. 439-456. Research supported by NSERC.

Computer Science

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Emission Spectra, Solar Radiation, Ultraviolet Reflection, Ultraviolet Spectrometers, Uranus (Planet), Voyager Project, Data Reduction, Far Ultraviolet Radiation, Photochemical Reactions, Radiative Transfer, Raman Spectra, Solar Spectra, Uranus, Ultraviolet, Reflectance, Spectra, Voyager 2 Mission, Models, Spacecraft Observations, Uvs Instrument, Atmosphere, Absorption, Methane, Scattering, Hydrocarbons, Diffusion, Depletion, Abundance, Wavelengths, Latitude, Stratosphere, Circulation, Analysis, Radiative T

Scientific paper

The present analysis of the 1250-1700 A region Uranus spectrum obtained by Voyager's US spectrometer characterizes these observation results as due primarily to solar light reflected from an H2 Rayleigh and Raman scattering atmosphere with small but measurable hydrocarbon absorption. The hydrocarbon abundances obtained are substantially lower than those at comparable levels of the Saturn or Jupiter atmospheres; it is suggested, in one-dimensional terms, that this is due to diffusive separation, in conjunction with photochemical depletion caused by a very low eddy-diffusion coefficient. Strong latitudinal variations in the hydrocarbon abundances are suggested in the subsolar, polar stratosphere.

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