Centuries-Long Aftermath: Saturn's Giant Storms Leave Lasting Impact

Saturn's giant storms, which occur every decade or two, leave ammonia footprints in the lower atmosphere that can last for centuries. A recent study by University of Michigan planetary scientist Cheng Li and his colleagues found that these storms carry ammonia vapor deep into Saturn's atmosphere, where it can linger for extended periods. The researchers discovered patches of ammonia trapped in the lower layers of Saturn's atmosphere, matching the latitudes of previous observed storms, some of which have been trapped for almost 120 years. The study suggests that mushballs, ice balls containing a blend of ammonia and water, play a role in carrying ammonia deeper into the atmosphere. The researchers hope to study the evolution of future storms and their impact on Saturn's atmosphere.