Composition and thermal profiles of the Jovian upper atmosphere determined by the Voyager ultraviolet stellar occultation experiment

Details Composition and thermal profiles of the Jovian upper atmosphere determined by the Voyager ultraviolet stellar occultation experiment Composition and thermal profiles of the Jovian upper atmosphere determined by the Voyager ultraviolet stellar occultation experiment

Jul 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86.5715f&link_type=abstract

Journal of Geophysical Research, vol. 86, July 1, 1981, p. 5715-5725.

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83

Atmospheric Composition, Jupiter Atmosphere, Stellar Occultation, Temperature Profiles, Ultraviolet Spectra, Voyager 2 Spacecraft, Absorption Spectra, Ammonia, Atmospheric Density, Atmospheric Temperature, Clouds (Meteorology), Data Reduction, Hydrocarbons, Hydrogen, Lyman Spectra, Lyman-Alpha Radiation, Helium, Emissions, Ultraviolet Spectrometer, Data, Uvs, Spectrum, Analysis, Light Curves, Wavelengths, Experiments, Ethane, Distribution, Structure, Pressure, Gravity Effects, Aeronomy, Jupiter, Atmosphere,

Scientific paper

During the occultation of the star Regulus (B7 type) by Jupiter as seen from the Voyager 2 spacecraft on July 9, 1979, two absorbing regions were detected. Between 911 and 1200 A, H2 was absorbing over a 600 km altitude range. Above 1300 A, the rapid increase of the absorption by the hydrocarbons was observed over an altitude interval of approximately 100 km with a height resolution of 3 km. The analysis of these absorption features has provided the height profiles of molecular hydrogen, methane, ethane, and acetylene, as well as the thermal profile in the upper atmosphere of Jupiter. Combining the Voyager ultraviolet spectrometer results with other data, such as those obtained by the Voyager infrared and radioscience instruments, has yielded a comprehensive model of the composition and structure of the atmosphere of Jupiter.

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