First results of an Investigation of Sulfur Dioxide in the Ultraviolet from Pioneer Venus through Venus Express

Details First results of an Investigation of Sulfur Dioxide in the Ultraviolet from Pioneer Venus through Venus Express First results of an Investigation of Sulfur Dioxide in the Ultraviolet from Pioneer Venus through Venus Express

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dps....42.1503m&link_type=abstract

American Astronomical Society, DPS meeting #42, #15.03; Bulletin of the American Astronomical Society, Vol. 42, p.974

Physics

Space Physics

Scientific paper

The Laboratory for Atmospheric and Space Physics is carrying on a project to restore and preserve data products from several past missions for archival and use by the scientific community. This project includes the restoration of data from Mariner 6/7, Pioneer Venus, Voyager 1/2, and Galileo. Here, we present initial results of this project that involve Pioneer Venus Orbiter Ultraviolet Spectrometer (PVO UVS) data. Using the Discrete Ordinate Method for Radiative Transfer (DISORT), we generate a suite of models for the three free parameters in the upper atmosphere of Venus in which we are interested: sulfur dioxide abundance at 40mb, scale height of sulfur dioxide, and the typical radius of the upper haze particles (assumed to be composed of 84.5% sulfuric acid). We calculate best fits to our radiative transfer model results for multi-spectral images taken with PVO UVS, as well as the 'visible' channel (includes wavelengths from 290nm to about 1000nm) of the mapping mode of the Visible and Infrared Thermal Imaging Spectrometer (VIRTIS-M-Vis) on the Venus Express spacecraft, currently orbiting Venus.
This work is funded though the NASA Planetary Mission Data Analysis Program, NNH08ZDA001N.

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