Statistics – Methodology
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992gita.rept.....f&link_type=abstract
Technical Report No. 1992-1 Georgia Inst. of Tech., Atlanta. School of Electrical Engineering.
Statistics
Methodology
Absorptivity, Atmospheric Composition, Atmospheric Effects, Atmospheric Models, Emission Spectra, Millimeter Waves, Radiative Transfer, Sulfuric Acid, Venus Atmosphere, Cloud Cover, Dissociation, Measurement, Opacity, Partial Pressure, Permittivity, Sulfur Dioxides
Scientific paper
The effects of the Venus atmospheric constituents on its millimeter wavelength emission are investigated. Specifically, this research describes the methodology and the results of laboratory measurements which are used to calculate the opacity of some of the major absorbers in the Venus atmosphere. The pressure broadened absorption of gaseous SO2/CO2 and gaseous H2SO4/CO2 has been measured at millimeter wavelengths. We have also developed new formalisms for computing the absorptivities of these gases based on our laboratory work. The complex dielectric constant of liquid sulfuric acid has been measured and the expected opacity from the liquid sulfuric acid cloud layer found in the atmosphere of Venus has been evaluated. The partial pressure of gaseous H2SO4 has been measured which results in a more accurate estimate of the dissociation factor of H2SO4. A radiative transfer model has been developed in order to understand how each atmospheric constituent affects the millimeter wave emissions from Venus. Our results from the radiative transfer model are compared with recent observations of the micro-wave and millimeter wave emissions from Venus. Our main conclusion from this work is that gaseous H2SO4 is the most likely cause of the variation in the observed emission from Venus at 112 GHz.
Fahd Antoine K.
Steffes Paul Gregory
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