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Venus: an isothermal lower atmosphere?
Science (New York, N.Y.)
|May 30, 1969
Summary
Earth-based microwave data reveal an isothermal atmospheric layer on Venus extending to 7 km. This finding refines the planet
Area of Science:
- Planetary Science
- Atmospheric Science
- Radio Astronomy
Background:
- Previous Venus atmospheric studies were limited by probe depth.
- Understanding Venus's lower atmosphere is crucial for climate modeling.
Purpose of the Study:
- To determine the atmospheric profile of Venus below previously probed regions.
- To refine the known radius of Venus.
Main Methods:
- Extrapolation of atmospheric data using Earth-based microwave observations.
- Analysis of microwave interferometry, radar cross sections, and brightness spectrum.
Main Results:
- Identification of an isothermal atmospheric layer at 670 K extending to an altitude of 7 km.
- Determination of Venus's radius as 6054.8 km.
Conclusions:
- Microwave data provide valuable insights into Venus's lower atmosphere.
- The refined radius and atmospheric profile improve planetary models.
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