10-October-2007, 11:40 PM
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Established Member
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Join Date: Jan 2006
Posts: 2,680
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space.com
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There is one significant difference, however: The Great Red Spot is a high-pressure system, and rotates the opposite direction from cyclones on Earth, which are low-pressure systems.
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nasa.gov:
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The Great Red Spot is a high-pressure system in which warm gases from below are forced upward.
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bautforum.com
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Originally Posted by Christofer Ferro
The Great Red Spot is a high-pressure system, associated with atmospheric subsidence, whereas typhoons/hurricanes are low-pressure systems, associated with atmospheric uplift. . . .
These large storms on Jupiter and Neptune are not areas of low pressure. They are areas of HIGH pressure. I don't know the proposed mechanism for such strong and persistent high pressure systems, but calling them hurricanes is misleading.
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badastronomy.com
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However, the Red Spot is a high pressure system, while terrestrial hurricanes are low pressure systems. A high pressure system rotates in an opposite sense from a low pressure system. They got that right!
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haydenplanetarium.org
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It is an anticyclonic storm and has a high-pressure center (unlike storms on Earth that have low-pressure centers). Its winds rotate counterclockwise and have a period of about 6 days. Scientists do not know what drives the storm or if the storm will ever dissipate.
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spacedaily.com
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Astronomers have snapped high-resolution near-infrared images of Jupiter's Great Red Spot, a persistent, high-pressure storm, as a smaller storm, called Red Spot Jr., breezed by it on its race around the planet.
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universetoday.com
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Astronomers from the University of California, Berkeley, and the W. M. Keck Observatory in Hawaii last month snapped high-resolution near-infrared images of the Great Red Spot, a persistent, high-pressure storm on Jupiter, as an upstart storm, Red Spot Jr., breezed by it on its race around the planet.
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more from space.com
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"The Great Dark Spot and the Great Red Spot are entirely different," [Bob West, a planetary scientist at the Jet Propulsion Laboratory.
] says. The Great Red Spot is deep. "It's a high-pressure storm system rooted in Jupiter's troposphere far below the cloudtops. The Great Dark Spot is apparently shallow and confined to Jupiter's high stratosphere."
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physicsforums.com
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Yes, because a hurricane is a low pressure driven system, and as Phobos uncovered, the GRS is a high pressure system. It is rotating, but is not a hurricane. Wind goes the opposite direction around a high pressure island than it does a low pressure island.
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The Hubble Heritage Site
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Unlike a low-pressure hurricane in the Caribbean Sea, however, the Red Spot rotates in a counterclockwise direction in the southern hemisphere, showing that it is a high-pressure system.
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wonderquest.com
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The most spectacular sight on Jupiter's surface is the Great Red Spot, a high-pressure storm gyrating in the opposite direction from Earth’s low-pressure hurricanes.
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usatoday.com
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We've been watching what may be the solar system's longest lasting storm — Jupiter's Great Red Spot — on and off for 340 years, since Cassini first discovered it in 1665, after Hans Lippershey invented the telescope in 1608. The high-pressure storm gyrates (in the opposite direction from low-pressure Earth hurricanes) due to Coriolis effects (just as on Earth) making a complete rotation every 6 days (2.5 times faster than storms rotate on Earth)
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tufts.edu (NASA's Cosmos)
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The Great Red Spot swirls in the counter-clockwise direction, like a high-pressure cyclone [sic] in the Earth's southern hemisphere
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So, Korjik, you are not doing anyone a favor by insisting that the GRB be referred to as a high pressure system that is somehow in contrast to hurricanes on Earth. I mean, should we refer to hurricanes on Earth as high pressure systems? You're only adding to the prevailing (popular, mainstream) confusion.
Last edited by Warren Platts; 11-October-2007 at 02:15 AM..
Reason: add more evidence that the high pressure view is MS
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