Jupiter: Interpretation of the Pioneer 10 Infrared Radiometer and S-Band Occultation Observations

J. S. Hogan Laboratory for Planetary Atmosphere Research, State University of New York, Brook, 11794

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R. D. Cess Laboratory for Planetary Atmosphere Research, State University of New York, Brook, 11794

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T. Encrenaz Group Planétes, Observatoire de Paris, Meudon, France 92190

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D. Gautier Group Planétes, Observatoire de Paris, Meudon, France 92190

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Abstract

Using recently calculated models of the Jovian atmosphere, we have derived a value of 5.0 for the H2/He mixing ratio from the Pioneer 10 infrared radiometer data. We have also computed a far-infrared spectrum corresponding to the thermal profile obtained in the Pioneer S-band occultation experiment. Our computed spectrum strongly suggests a misinterpretation of the data obtained in that experiment.

Abstract

Using recently calculated models of the Jovian atmosphere, we have derived a value of 5.0 for the H2/He mixing ratio from the Pioneer 10 infrared radiometer data. We have also computed a far-infrared spectrum corresponding to the thermal profile obtained in the Pioneer S-band occultation experiment. Our computed spectrum strongly suggests a misinterpretation of the data obtained in that experiment.

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