Computer Science
Scientific paper
May 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995nasa.reptq....j&link_type=abstract
Technical Report, 1 Apr. 1992 - 31 May 1995 National Aeronautics and Space Administration. Ames Research Center, Moffett Field,
Computer Science
Cross Correlation, Data Reduction, Emission Spectra, Molecular Clouds, Near Infrared Radiation, Neutral Atmospheres, Radio Occultation, Sulfuric Acid, Vapors, Venus (Planet), Venus Atmosphere, Abundance, Annual Variations, Cloud Cover, Daytime, Infrared Imagery, Night, Pioneer Venus 1 Spacecraft, Vertical Distribution
Scientific paper
In this study, we sought to characterize variations in the abundance and distribution of subcloud H2SO4(g) in the Venus atmosphere by using a number of 13cm radio occultation measurements conducted with the Pioneer Venus Orbiter near the inferior conjunction of 1991. A total of ten data sets were examined and analyzed, producing vertical profiles of temperature and pressure in the neutral atmosphere, and sulfuric acid vapor abundance below the main cloud layer. Two of the vertical profiles of the abundance of H2SO4(g) were correlated with NIR images of the night side of Venus made during the same period of time by Boris Ragent (under a separate PVO Guest Investigator Grant). Initially, we had hoped that the combination of these two different types of data would make it possible to constrain or identify the composition of the large particles causing the features observed in the NIR images. However, the sparseness of the radio occultation data set, combined with the sparseness of the NIR data set (one image per day over an 8 day period) made it impossible to draw strong conclusions. Considered on their own, however, the parameters retrieved from the radio occultation experiments are valuable science products.
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