Megastorms leave marks on Saturn’s atmosphere for centuries. Researchers have discovered long-lasting megastorms on Saturn, similar to Jupiter's Great Red Spot, through the study of radio emissions and ammonia gas disruptions. The research uncovers significant atmospheric differences between the tw
During its seven-year Solstice Mission, Cassini watched as a huge storm erupted and encircled Saturn. Scientists think storms like this are related, in part, to seasonal effects of sunlight on Saturn’s atmosphere. Credit: NASA/JPL-Caltech/Space Science InstituteResearchers have discovered long-lasting megastorms on’s Great Red Spot, through the study of radio emissions and ammonia gas disruptions.
, and the University of Michigan, Ann Arbor. They examined radio emissions from the planet, originating from beneath the surface, and discovered long-term disruptions in the distribution of ammonia gas.Radio image of Saturn taken with the VLA in May 2015, with the brighter radio emissions from Saturn and its rings subtracted to enhance the contrast in the fainter radio emissions between the various latitudinal bands in the atmosphere.
In the optical, Saturn’s banded atmosphere appears to smoothly shift from color to color. But seen here in radio light — VLA data overlays a Cassini image of Saturn — the distinct nature of the bands is apparent. Scientists used VLA data to better understand ammonia in the gas giant’s atmosphere and learned that megastorms transport the ammonia from the upper to the lower atmosphere. Credit: S. Dagnello , I.
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