Using the images from Cassini spacecraft, the scientists found that the hot spots of Jupiter’s atmosphere
are created by a wave named Rossby. The hot spots are cloudless patches of Jupiter’s atmosphere. This is the first time that the scientists observed the hot spots, and this is the best way to appreciate the nature of features of hot spots. Also the scientists made movies from the observations taken by Cassini, during its last flyby Jupiter. The films zoom in (approximately 7 degrees) the hot spots between the dark parts and bright white parts of Jupiter.
About the hot spots the scientists much knew from Galileo spacecraft, which descended into a hot spot in 1995.
In fact, the hot spots are breaks in the clouds. They are in the unseen layers on the atmosphere, may be all the way down the level, where can form water clouds.
In the pictures, the hot spots seems shadowy, but as the deeper layers are warmer, the hot spots are bright at the infrared length, where is sensed the heat.
The movies of Cassini helped the researchers to map the wind in and around to each hot spot.
The run time of hot spots is approximately 362 kilometers per hour. The results of individual movements, the scientists found that the motion of the hot spots fit to the Rossby wave in the atmosphere of Jupiter. The Rossby wave plays main role in the Earth’s weather. The planet is circled from west to east by the wave. Also the wave is responsible for hot spots. The scientists think that the wave can raise and fall 15 to 30 miles in altitude. The results can help the scientists to understand how well the observations felt by the Galileo probe extend to the rest of atmosphere of Jupiter.