Climate - Climate One difference between Neptune and Uranus...

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Climate One difference between Neptune and Uranus is the typical level of meteorological activity. When the Voyager 2 spacecraft flew by Uranus in 1986, that planet was visually quite bland. In contrast Neptune exhibited notable weather phenomena during the 1989 Voyager 2 fly-by. [70] The Great Dark Spot (top), Scooter (middle white cloud), [71] and the Small Dark Spot (bottom), with contrast exaggerated. Neptune's weather is characterized by extremely dynamic storm systems, with winds reaching speeds of almost 600 m/s—nearly attaining supersonic flow. [16] More typically, by tracking the motion of persistent clouds, wind speeds have been shown to vary from 20 m/s in the easterly direction to 325 m/s westward. [72] At the cloud tops, the prevailing winds range in speed from 400 m/s along the equator to 250 m/s at the poles. [50] Most of the winds on Neptune move in a direction opposite the planet's rotation. [73]
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