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Cassini Imaging Science: Initial Results on Saturn's Atmosphere

Burns, J. A.; Neukum, G.; Wagner, R. +32 more

The Cassini Imaging Science Subsystem (ISS) began observing Saturn in early February 2004. From analysis of cloud motions through early October 2004, we report vertical wind shear in Saturn's equatorial jet and a maximum wind speed of ~375 meters per second, a value that differs from both Hubble Space Telescope and Voyager values. We also report a…