High spatial and spectral resolution 10-micron observations of Jupiter

Details High spatial and spectral resolution 10-micron observations of Jupiter High spatial and spectral resolution 10-micron observations of Jupiter

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980icar...44...93t&link_type=abstract

Icarus, vol. 44, Oct. 1980, p. 93-101.

Astronomy and Astrophysics

Astronomy

27

Abundance, Infrared Astronomy, Infrared Spectra, Jupiter Atmosphere, Spectral Resolution, Ammonia, Ethane, Phosphines, Photolysis, Spatial Resolution, Turbulent Diffusion

Scientific paper

Ten-micrometer spectra of the North Tropical Zone, North Equatorial Belt, and Great Red Spot at a spectral resolution of 1.1/cm are compared to synthetic spectra. These ground-based spectra were obtained simultaneously with the Voyager 1 encounter with Jupiter in March, 1979. The NH3 vertical distribution is found to decrease with altitude significantly faster than the saturated vapor pressure curve and is different for the three observed regions. Spatial variability in the NH3 mixing ratio could be caused by changes in the amount of NH3 condensation or in the degree of the NH3 photolysis. The C2H6 emission at 12 microns has approximately the same strength at the North Tropical Zone and North Equatorial Belt, but it is 30% weaker at the Great Red Spot. A cooler temperature inversion or a smaller abundance of C2H6 could explain the lower C2H6 emission over the Great Red Spot.

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