Anticyclonic rotation: Difference between revisions
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'''Anticyclonic rotation''', or '''anticyclonic circulation''', is [[atmosphere|atmospheric]] motion in the direction opposite to a [[cyclonic rotation]]. For cyclonic rotation, this motion is in a counter-clockwise direction in the [[Northern Hemisphere]] and clockwise in the [[Southern Hemisphere]]. Thus, just anticyclonic rotation would mean clockwise in the Northern Hemisphere and counter-clockwise in the Southern. For [[synoptic scale meteorology|large-scale]] weather systems, greater than approximately {{cvt|500|km|mi}}, anticyclonic rotation only occurs for [[high-pressure area|high-pressure systems]]. This is due to how the [[Coriolis force|Coriolis effect]] acts on high-pressure systems. Large, [[low-pressure area|low-pressure systems]], such as [[tropical cyclone]]s, have [[cyclonic rotation]]. Small scale rotating atmospheric features, such as [[tornado]]es, [[water spout]]s, and [[dust devil]]s can have either anticyclonic or cyclonic rotation, since the direction of their spin depends on local forces rather than the Coriolis effect. |
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'''Anticyclonic rotation''' or '''circulation''' is movement in the direction opposite to the Earth's rotation. In the attached video an example of an anticyclonic couplet to a supercell is documented. Note that while the supercell itself is rotating in a cyclonic direction, the couplet is forced into an anticyclonic rotation due to the Rear Flank Downdraft and inflow intersecting. |
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[[File:http://mesocyclonestudios.com/media/anticyclonicrotation.mov|thumbnail|Anticyclonic Rotation (Anticyclonic Couplet) courtesy of Aaron Jayjack and Jason Zahn]]<ref>{{cite web|last1=Jayjack|first1=Aaron|title=Anticyclonic Rotation in Floydata Supercell Couplet|url=https://www.facebook.com/permalink.php?story_fbid=652608238217250&id=347252955419448|website=Scudchasers Storm Tours|publisher=Scudchasers Storm Tours|accessdate=26 April 2015}}</ref> |
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*''Compare: [[cyclonic rotation]]'' |
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==External links== |
==External links== |
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*[http:// |
*[http://glossary.ametsoc.org/wiki/Anticyclonic_rotation Anticyclonic Rotation] - AMS Glossary of Meteorology |
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[[Category:Climate patterns]] |
[[Category:Climate patterns]] |
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Latest revision as of 04:07, 26 December 2024
 | This article appears to be a dictionary definition. (December 2023) |
Anticyclonic rotation, or anticyclonic circulation, is atmospheric motion in the direction opposite to a cyclonic rotation. For cyclonic rotation, this motion is in a counter-clockwise direction in the Northern Hemisphere and clockwise in the Southern Hemisphere. Thus, just anticyclonic rotation would mean clockwise in the Northern Hemisphere and counter-clockwise in the Southern. For large-scale weather systems, greater than approximately 500 km (310 mi), anticyclonic rotation only occurs for high-pressure systems. This is due to how the Coriolis effect acts on high-pressure systems. Large, low-pressure systems, such as tropical cyclones, have cyclonic rotation. Small scale rotating atmospheric features, such as tornadoes, water spouts, and dust devils can have either anticyclonic or cyclonic rotation, since the direction of their spin depends on local forces rather than the Coriolis effect.
External links
[edit]- Anticyclonic Rotation - AMS Glossary of Meteorology
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