Jupiter’s decade of Storm Chasing was rewarded by the Hubble Space Telescope.
Telescopes have been researched for many years Great Red Spot — Jupiter’s Great Storm — It is shrinking for some mysterious reason. In addition, researchers have discovered significant changes in wind speed during a storm.
Jupiter It takes 12 earth years to orbit the sun. Hubble found that during the Jupiter year from 2009 to 2020, the wind speed on the outer ring of the Great Red Spot increased by up to 8%. Although the wind speed changed depending on when Hubble was watching the storm, the telescope tracked a long-term increase in the speed of rotation of the outer ring.
Today’s typical paddlewheel wind speeds easily exceed 100 meters per second (223mph or 360km / h), but ten years ago the range was often as low as 90 meters per second (about 200mph or 324km / h). became.
The storm is larger than the planet Earth, and astronomers have observed it regularly for over 150 years, with occasional other observations in the 1600s, providing evidence of change over a relatively long period of time. Storm velocities are incredible compared to what we see on Earth, but on Jupiter the typical increase was less than 1.6 mph (2.6 km / h) per Earth year. Said in a statement..
“When I first saw the results, I asked,’Does this make sense?’” Michael Wong, a planetary scientist at the University of California, Berkeley, said in a statement that no one has ever seen it. I’ve never seen this. ”
But Wong and other researchers Hubble Space TelescopeAccurate and long-term observation records have provided sufficient confirmation, along with software data analysis that tracks tens of thousands to hundreds of thousands of wind vectors (directions and velocities) during observations of Jupiter.
Hubble can’t look into the depths of the storm, so researchers have a hard time understanding why the increase is happening. “Everything below the cloud top doesn’t look like data,” Wong said. “But it’s interesting data that helps us understand what fuels the Great Red Spot and how it sustains energy.”
NASA is currently running a Juno mission on Jupiter. I saw the Great Red SpotHowever, the press release did not say whether observations from this mission would help unravel the windy mystery.Junho is already working with Hubble and the Gemini Observatory in Hawaii to create charts Atmospheric and storm conditions On a huge planet.I also have Junho I looked deeply Great Red Spot to graph the depth of the storm.
Most of the research was from Hubble’s Outer Planetary Atmosphere Legacy (OPAL) program. The program allows the telescope to monitor the weather conditions of the outer planets by making observations at least annually. The program includes Jupiter, Saturn, Uranus, and Neptune, far outside the solar system and beyond close-up observations with current technology, so it’s about how giant exoplanets work. It also provides context.
Research-based treatises Published last month In the Geophysics Research Letter.
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Jupiter’s Great Red Spot isn’t just shrinking. The wind is also accelerating.
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