Comparison of Galileo-Probe and Earth-Based Translation Rates of Jupiter's Equatorial Clouds

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Science  10 May 1996:
Vol. 272, Issue 5263, pp. 841
DOI: 10.1126/science.272.5263.841


The Doppler wind speeds derived from Galileo probe data are comparable with the maximum translation speeds observed in the equatorial zone by Voyager 1 and the Hubble Space Telescope. Slower published values of east-west winds are based on measurements of larger features and should be interpreted as translation rates of large weather systems interacting with the wind. The nature of the hot-spot region that the Galileo probe entered is compatible with a high-speed jet at 6 degrees north. The hot spot is associated with an equatorial weather system that spans 5 degrees of latitude and translates at 103 meters per second.