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A global traveling wave on venus
Science (New York, N.Y.)
|May 1, 1992
Summary
The dominant cloud pattern on Venus is confirmed to be a Kelvin wave. This atmospheric wave may explain observed phenomena and help maintain Venus's general circulation.
Area of Science:
- Planetary Science
- Atmospheric Physics
- Venusian Climatology
Background:
- The large-scale cloud patterns on Venus, known as "gamma" or "Psi", have been previously suggested to be Kelvin waves.
- Understanding these patterns is crucial for comprehending Venus's atmospheric dynamics.
Purpose of the Study:
- To verify the identification of the dominant Venusian cloud pattern as a Kelvin wave.
- To explore potential mechanisms for the wave's excitation and its role in atmospheric circulation.
Main Methods:
- Detailed calculations of linear wave modes within the Venusian atmosphere.
- Analysis of cloud feedback mechanisms, specifically infrared heating fluctuations.
Main Results:
- The detailed calculations confirm that the dominant cloud pattern is indeed a Kelvin wave.
- Cloud feedback through infrared heating fluctuations is identified as a plausible excitation mechanism.
- The Kelvin wave's modulation of the large-scale pattern is a potential explanation for observed phenomena (designated "Y").
Conclusions:
- The study provides strong evidence that the "gamma"/"Psi" cloud pattern on Venus is a Kelvin wave.
- Infrared-driven cloud feedback is a likely source for this atmospheric wave.
- The Kelvin wave plays a significant role in Venus's atmospheric dynamics, potentially explaining observed patterns and contributing to general circulation.
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