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Scientists have solved the mystery of why bands in Jupiter’s atmosphere have different rotation directions. They also understood why they began to change rapidly every few years. Currents
Scientists have solved the mystery of why bands in Jupiter’s atmosphere have different rotation directions. They also understood why they began to change rapidly every few years. Currents in the giant planet’s magnetic field were responsible for everything.
The Juno mission recently helped solve another mystery of the magnetic field of Jupiter, the largest planet in the Solar System. It has to do with the behavior of its atmosphere. Very strong latitudinal winds blow across the equator that stretch the clouds. As a result, they take on the appearance of stripes, which are the main features of the planet’s appearance, along with eddies such as the Great Red Spot.
At the same time, winds blow in different directions at different latitudes of Jupiter. At the equator they have east directions, but as they move north and south they gain a west direction. Then everything changes and as they get closer to the poles, they fly east again.
But that’s not all. Every 4-5 years, dramatic changes occur in bands in Jupiter’s atmosphere. The lines begin to change color. And sometimes there are real disasters where the weather changes completely and cloud belts are mixed.
Scientists were able to determine even earlier that these changes were related to the fluctuation of infrared radiation 50 km below the planet’s surface. In turn, it is caused by currents caused by changes in the planet’s magnetic field.
He studied the Juno apparatus for many years. It turned out to be much more durable than its designers had anticipated and resistant to the effects of the giant planet’s radiation belts. It was these observations that became the basis for the scientists’ conclusions in a new study.
“There are wave-like movements in the planet’s magnetic field called torsional oscillations. The fascinating thing is that when we calculate the periods of these oscillations, they match the changes seen in infrared emission at Jupiter,” said Chris Jones, one of the two authors of the study.
In particular, the scientists are watching an interesting region of Jupiter’s magnetic field called the Great Blue Spot, but the colors in its vault are traditional. This is a region of the magnetic field of the giant planet with special properties.
The big blue dot is heading east. But lately it has started to slow down. Scientists believe this is the beginning of great hesitation. It will cause enormous amounts of torsional oscillations that will once again tear and confuse the colored lines on Jupiter.
In general, scientists have already understood how changes in the upper layers of the atmosphere relate to processes occurring in its depths. Only the specific mechanism of conversion of magnetic oscillations into infrared radiation remains a mystery. It will help form an idea of ​​future research.
Source: Port Altele
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