NASA NTRS · 19900033137
Uranus deep atmosphere revealed
Abstract
The present examination of the radio spectrum and latitudinal radio brightness temperature variation of Uranus leads to a ejection of thermochemical equilibrium models and the adoption of an atmospheric model characterized by a low ammonia volume-mixing ratio that is uniformly distributed over a wide altitude range. The elemental ratios derivable from this model support the planetary accretion theory of Pollack and Bodenheimer (1989). It is noted that while the equatorial and midlatitude values of Uranian radio brightness temperature are explainable by condensation theories, the polar value can only be accounted for through the invocation of strong, dry air downdrafts.
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De Pater, Imke, Romani, Paul N., Atreya, Sushil K.. 1989-12-01. Uranus deep atmosphere revealed. https://ntrs.nasa.gov/citations/19900033137
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