The Jovian spectrum in the 3-micron window

Details The Jovian spectrum in the 3-micron window The Jovian spectrum in the 3-micron window

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983icar...55..390d&link_type=abstract

Icarus (ISSN 0019-1035), vol. 55, Sept. 1983, p. 390-398.

Computer Science

Sound

5

Abundance, Infrared Absorption, Infrared Windows, Jupiter Atmosphere, Molecular Absorption, Albedo, Methane, Near Infrared Radiation, Planetary Temperature, Thermal Radiation, Water Vapor, Jupiter, Spectra, Analysis, Thermal Properties, Galileo Mission, Galileo Near Infrared Mapping Spectrometer Experiment, Calculations, Calibration, Ammonia, Absorption, Reflectance, Water, Atmosphere, Temperature, Models, Layers, Albedo, Distribution, Spectroscopy

Scientific paper

The spectral window of Jupiter at 3 microns is analyzed and compared with previously published spectra. The two components of the spectrum, the thermal and the solar reflected contributions, are calculated at low resolution (30 per cm) between 3300 and 3800 per cm for preparing the interpretation of the Galileo Near Infrared Mapping Spectrometer experiment. The calculations yield to the following conclusions: (1) NH3 is the main absorber between 3300 and 3600 per cm for both the thermal spectrum and the solar reflected spectrum; H2O appears only in the thermal component above 3600 per cm. (2) The thermal component can be seen only on the dark side of Jupiter; the atmosphere is sounded down to temperature levels of about 210 K. (3) The solar reflected component can be modelized by a reflecting layer between 135 and 140 K with an albedo of 0.3; high spatial resolution maps of Jupiter at 3 microns should give access to the NH3 spatial distribution on Jupiter.

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