Other
Scientific paper
Jul 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992icar...98...82g&link_type=abstract
Icarus (ISSN 0019-1035), vol. 98, no. 1, July 1992, p. 82-93.
Other
23
Ammonia, Atmospheric Chemistry, Atmospheric Composition, Jupiter Atmosphere, Jupiter Red Spot, Phosphorus Compounds, Abundance, Atmospheric Models, Atmospheric Pressure, Atmospheric Temperature, Hydrides, Iris Satellites, Photolysis
Scientific paper
The tropospheric abundances of NH3 and PH3 in Jupiter's Great Red Spot (GRS) are presently determined on the basis of a group of Voyager IRIS spectra, and compared with those of the surrounding South Tropical Zone (STZ) obtained from another two groups of IRIS spectra, in order to characterize the GRS's chemistry and dynamics. Although the GRS is believed to be a region of strong vertical transport, NH3 depletion is surprisingly found to occur below the tropopause within the GRS. Since one of the STZ's selections has a temperature-pressure profile similar to that of the GRS below the 300 mbar level, condensation cannot explain the low NH3 abundance in the GRS.
Bezard Bruno
Gautier Daniel
Griffith Caitlin A.
Owen Tobias
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