Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983icar...53..538g&link_type=abstract
Icarus (ISSN 0019-1035), vol. 53, March 1983, p. 538-547.
Astronomy and Astrophysics
Astronomy
7
Abundance, Atmospheric Composition, Interferometry, Sulfur Dioxides, Venus Clouds, Atmospheric Chemistry, Atmospheric Models, Limb Darkening, Millimeter Waves, Planetology, Satellite-Borne Instruments, Spaceborne Astronomy, Venus Atmosphere, Vertical Distribution, Venus, Sulfur Dioxide, Abundance, Interferometry, Observations, Clouds, Wavelengths, Chemistry, Mixing Ratio, Atmosphere, Concentrations
Scientific paper
The role of SO2 in the chemistry of the clouds of Venus has been investigated by deducing its mixing ratio profile in the atmosphere through millimeter wavelength interferometric measurements of the planet's limb darkening. The first zero crossing of the Venus visibility function was measured to be 0.6221 + or - 0.0007 at a wavelength of 3.4 mm, using a reference radius for Venus of 6100 km. This measurement constrains the amount of limb darkening and shows that the high concentrations of SO2 found in the lower atmosphere do not persist above an altitude of 42 km. Thus, a sink for SO2 exists below the level of the lowest cloud deck.
Good John C.
Schloerb Peter F.
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