Computer Science
Scientific paper
Oct 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986joat.conf...48b&link_type=abstract
In NASA. Goddard Inst. for Space Studies The Jovian Atmospheres p 48-52 (SEE N87-17598 09-91)
Computer Science
Atmospheric Composition, Atmospheric Models, Jupiter Atmosphere, Spatial Distribution, Vertical Distribution, Water Vapor, Abundance, Equatorial Regions, Iris Satellites, Polar Regions, Spectral Resolution, Tropical Regions, Voyager Project
Scientific paper
High spectral resolution observations of Jupiter at 2.7 and 5 microns acquired from the Kuiper Airborne Observatory were used to infer the vertical distribution of H2O between 0.7 and 6 bars. The H2O mole fraction, qH2O, is saturated for P<2 bars, qH2O = 4x.000001 in the 2 to 4 bar range and it increases to 3x.00001 at 6 bars where T = 288 K. The base of the 5 micron line formation region is determined by pressure-induced H2 opacity. At this deepest accessible level, the O/H ratio in Jupiter is depleted by a factor of 50 with respect to the solar atmosphere. High spatial resolution Voyager IRIS spectra of Jupiter's North Tropical Zone, Equatorial Zone, and Hot Spots in the North and South Equatorial Belt were analyzed to determine the spatial variation of H2O across the planet. The column abundance of H2O above the 4 bar level is the same in the zones as in the SEB Hot Spots, about 20 cm-amgt. A cloud model for Jupiter's belts and zones was developed in order to fit the IRIS 5 micron spectra. An absorbing cloud located at 2 bars whose 5 micron optical thickness varies between 1 in the Hot Spots and 4 in the coldest zones satisfactorily matches the IRIS data.
Bjoraker Gordon L.
Kunde Virgil G.
Larson Harold P.
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