Temperature of the atmosphere of Jupiter from Pioneer 10/11 radio occultations

Details Temperature of the atmosphere of Jupiter from Pioneer 10/11 radio occultations Temperature of the atmosphere of Jupiter from Pioneer 10/11 radio occultations

Mar 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976georl...3..113k&link_type=abstract

Geophysical Research Letters, vol. 3, Mar. 1976, p. 113-116.

Physics

3

Atmospheric Temperature, Jupiter Atmosphere, Radio Occultation, Flyby Missions, Oblate Spheroids, Pioneer 10 Space Probe, Pioneer 11 Space Probe, Temperature Distribution, Temperature Inversions

Scientific paper

Radio-occultation data from the Pioneer 10 and 11 flybys are analyzed using an integral inversion technique combined with a model for Jupiter's shape based on gravity data in order to account for the oblateness of the planet's atmosphere. The inversion technique defines the center of refraction in terms of the radius of curvature and the normal to the equipotential surface at the closest approach point of the ray. An Abelian inversion of the data obtained during the Pioneer 10 entry, the Pioneer 10 exit, and the Pioneer 11 exit is performed by fixing the center of refraction at some average value for each occultation event. The results for all three measurements are found to be consistent and to show a temperature inversion between the 10-mb and the 100-mb levels, with temperatures of 130 to 170 K at 10 mb and 80 to 100 K at 100 mb. Major sources of error are discussed, and it is concluded that the range of reasonable temperature uncertainties at these levels does not exceed 40 K. It is noted that the temperature inversion was also inferred from Pioneer 10 IR radiometric data.

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