Nature of the Ultraviolet Absorber in the Venus Clouds: Inferences Based on Pioneer Venus Data

  title={Nature of the Ultraviolet Absorber in the Venus Clouds: Inferences Based on Pioneer Venus Data},
  author={James B. Pollack and Boris Ragent and Robert W. Boese and Martin George Tomasko and Jacques Blamont and Robert G. Knollenberg and Larry W. Esposito and A. Ian F. Stewart and Lawrence Travis},
  pages={76 - 79}
Several photometric measurements of Venus made from the Pioneer Venus orbiter and probes indicate that solar near-ultraviolet radiation is being absorbed throughout much of the main cloud region, but little above the clouds or within the first one or two optical depths. Radiative transfer calculations were carried out to simulate both Pioneer Venus and ground-based data for a number of proposed cloud compositions. This comparison rules out models invoking nitrogen dioxide, meteoritic material… 

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Ultraviolet photometry from the orbiting astronomical observatory. III - Observations of Venus, Mars, Jupiter, and Saturn longward of 2000 A.

A number of high-quality spectra of Mars, Jupiter, the combined disk and rings of Saturn, as well as lower-quality spectra of Venus, have been obtained with an objective-grating spectrometer of the

Electron Observations and Ion Flows from the Pioneer Venus Orbiter Plasma Analyzer Experiment

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The decrease in the reflectivity of Venus in the near-UV can be explained if the clouds contain particles of elemental sulfur in addition to sulfuric acid. The low-resolution McDonald-Pittsburgh

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