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Causes of epic storms on Saturn unravelled
Scientists have finally decoded the long-standing mystery of why Saturn seethes with enormous storms every 30 years. After analysing data from NASA\'s Cassini mission, they found that violent windstorms which can grow into bright bands that encircle the entire planet are on a natural timer that is reset by each subsequent storm. In 140 years of telescope observations, great storms have erupted on Saturn six times.
This situation shuts off the process of convection - in which warm, moist air rises, and cool, dense air sinks - that creates new clouds and storms
Washington: Scientists have finally decoded the long-standing mystery of why Saturn seethes with enormous storms every 30 years. After analysing data from NASA's Cassini mission, they found that violent windstorms which can grow into bright bands that encircle the entire planet are on a natural timer that is reset by each subsequent storm. In 140 years of telescope observations, great storms have erupted on Saturn six times.
Once each giant storm dumps its huge mass of rain, the air within the clouds is left lighter than the atmosphere below. For a time, this situation shuts off the process of convection - in which warm, moist air rises, and cool, dense air sinks - that creates new clouds and storms. Other observations by ground and space-based telescopes have hinted at a wet interior for Saturn.These ingredients provide important clues about the formation of the two planets - which are thought to have formed before all the others - and conditions in the early solar system.
