The atmosphere of Jupiter - an analysis of the Voyager radio occultation measurements

Details The atmosphere of Jupiter - an analysis of the Voyager radio occultation measurements The atmosphere of Jupiter - an analysis of the Voyager radio occultation measurements

Sep 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86.8721l&link_type=abstract

Journal of Geophysical Research, vol. 86, Sept. 30, 1981, p. 8721-8727. NASA-supported research.

Astronomy and Astrophysics

Astronomy

196

Jupiter Atmosphere, Radio Astronomy, Radio Occultation, Voyager Project, Abundance, Aerosols, Ammonia, Atmospheric Composition, Atmospheric Density, Atmospheric Pressure, Atmospheric Temperature, Tropopause, Jupiter, Atmosphere, Analysis, Radio Occultations, Voyager 1, Voyager 2, Observations, Gases, Refractivity, Density, Pressure, Temperatures, Microwaves, Absorption, Troposphere, Stratosphere, Latitudes, Ammonia, Tropopause, Altitude, Aerosols, Distribution, Dynamics, Comparisons, Equatorial Regions, Iri

Scientific paper

Coherently related S and X band signals of 2.3 and 8.4 GHz, respectively, which were transmitted from Voyagers 1 and 2 were used to probe the Jovian atmosphere. Height profiles of the gas refractivity, molecular number density, pressure, temperature, and microwave absorption in the troposphere and stratosphere were observed at latitudes ranging from 0 to 70 deg S. At 1000 mbar, the temperature was + or - 5 K and the lapse rate was equal to the adiabatic value of 2.1 K/km within the resolution of the measurements. The ammonia abundance in this region was 0.022 + or - 0.008%, which is in good agreement with values derived from cosmic abundance considerations. The tropopause at the 140 mbar level had a temperature of 110 K, which increased with increasing altitude, reaching 160 + or - 20 K in the 10 to 1 mbar region. Significant horizontal density variations were detected in the stratosphere, which implies a nonuniform temperature and aerosol distribution across the Jovian disk or across high- and low-pressure regions due to local atmospheric dynamics.

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