Water Cloud Thunderstorm Northwest of Great Red Spot
Credit: NASA/ESA/ISA/JPL · Download full size image
This false-color picture of a convective thunderstorm 10,000 kilometers (6,218 miles) northwest of Jupiter's Great Red Spot was obtained by NASA's Galileo spacecraft on June 26, 1996. The white cloud in the center is a tall, thick cloud 1,000 kilometers (620 miles) across, standing 25 kilometers (15 miles) higher than most of the surrounding clouds. Its base extends off to the left and appears red in this representation. This red color indicates that the cloud base is very deep in the atmosphere, about 50 kilometers (30 miles) below the surrounding clouds. Most of the wisps and features in Jupiter's clouds are thick and thin ammonia clouds, forming at a pressure just less than Earth's sea level pressure. On Jupiter, water is the only substance to form a cloud at a depth where the pressure is about five times the Earth's sea level pressure. The red base of this thunderstorm is so deep that it can only be a water cloud. Posted on: 19 Mar, 2003
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