Study of the ammonia ice cloud layer in the north tropical zone of Jupiter from the infrared interferometric experiment on Voyager

Details Study of the ammonia ice cloud layer in the north tropical zone of Jupiter from the infrared interferometric experiment on Voyager Study of the ammonia ice cloud layer in the north tropical zone of Jupiter from the infrared interferometric experiment on Voyager

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986joat.conf...64s&link_type=abstract

In NASA. Goddard Inst. for Space Studies The Jovian Atmospheres p 64-70 (SEE N87-17598 09-91)

Physics

1

Ammonia, Chemical Clouds, Ice Clouds, Infrared Interferometers, Infrared Spectra, Jupiter Atmosphere, Iris Satellites, Mie Scattering, Particle Density (Concentration), Particle Size Distribution, Radiative Transfer, Tropical Regions, Voyager Project

Scientific paper

An average of 51 Voyager 1 IRIS spectra of Jupiter's North Tropical Zone was analyzed to infer the abundance, vertical extent, and size distribution of the particles making up the ammonia cloud in this region. It is assumed that the cloud base coincides with the level at which 100% saturation of ammonia vapor occurs. The vertical distribution of particulates above this level is determined by assuming a constant total ammonia mixing ratio and adjusting the two phases so that the vapor is saturated throughout the cloud. A constant scaling factor then adjusts the base number density. A radiative transfer program is used that includes the effects of absorption and emission of all relevant gases as well as anisotropic scattering by cloud particles. Mie scattering from a gaussian particle size distribution is assumed. The vertical thermal structure is inferred from a temperature retrieval program that utilizes the collision induced S(0) and S(1) molecular hydrogen lines between 300 and 700.cm, and the 1304.cm methane band.

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