Study of the ammonia ice cloud layer in the Equatorial Region of Jupiter from the infrared interferometric experiment on Voyager

Details Study of the ammonia ice cloud layer in the Equatorial Region of Jupiter from the infrared interferometric experiment on Voyager Study of the ammonia ice cloud layer in the Equatorial Region of Jupiter from the infrared interferometric experiment on Voyager

May 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981icar...46..233m&link_type=abstract

Icarus, vol. 46, May 1981, p. 233-248.

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60

Ammonia, Cloud Cover, Equatorial Atmosphere, Ice, Ice Clouds, Infrared Interferometers, Jupiter Atmosphere, Aerothermochemistry, Atmospheric Chemistry, Brightness Temperature, Radiative Transfer, Spectrum Analysis, Voyager 1 Spacecraft, Radiative Transfer, Brightness Temperatures, Spectroscopy, Observations, Thermal Properties, Models, Radius, Pressure, Temperatures, Spectrum, Scattering, Jupiter, Voyager 1, Ammonia, Ice, Clouds, Layers, Data, Equatorial Regions, Interferometry, Infrared, Experiments, Compa

Scientific paper

Spectra from the Voyager 1 infrared interferometer spectrometer (IRIS) obtained near the time of closest approach to Jupiter were analyzed for the purpose of inferring ammonia cloud properties associated with the Equatorial Region. Comparisons of observed spectra with synthetic spectra computed from a radiative transfer formulation, that includes multiple scattering, yielded the following conclusions: (1) very few NH3 ice particles with radii less than 3 microns contribute to the cloud opacity; (2) the major source of cloud opacity arises from particles with radii in excess of 30 microns; (3) column particle densities are between 1 and 2 orders of magnitude smaller than those derived from thermochemical considerations alone, implying the presence of important atmospheric motion; and (4) another cloud system is confirmed to exist deeper in the Jovian troposphere.

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