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- Ivanhater
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im looking at visible, has the center died out??
http://hadar.cira.colostate.edu/ramsdis ... at2_0.html
http://hadar.cira.colostate.edu/ramsdis ... at2_0.html
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- Astro_man92
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- Astro_man92
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ivanhater wrote:im looking at visible, has the center died out??
http://hadar.cira.colostate.edu/ramsdis ... at2_0.html
I don't think it has died out but it just isn't as visable with the night floater
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ivanhater wrote:im looking at visible, has the center died out??
http://hadar.cira.colostate.edu/ramsdis ... at2_0.html
Night-time visible is hard to discern all the clouds. The center seems fine on shortwave IR.
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- Astro_man92
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cinlfla wrote:anticyclone
Umm, I don't mean to sound stupid but what is an Anticyclone????
From the American Meteorological Society Glossary:
Anticyclone:
An atmospheric anticyclonic circulation, a closed circulation. The wind in an anticyclone is in the clockwise direction in the Northern Hemisphere and counterclockwise in the Southern Hemisphere.
With respect to the relative direction of its rotation, it is the opposite of a cyclone. Because anticyclonic circulation and relative high atmospheric pressure usually coexist, the terms anticyclone and high are used interchangeably in common practice. Compare ridge.
http://amsglossary.allenpress.com/gloss ... ticyclone1
Last edited by clfenwi on Mon Aug 08, 2005 6:46 pm, edited 1 time in total.
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- Astro_man92
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gkrangers wrote:Its an area of high pressure over top of a tropical system. The anti-cyclonic flow helps the outflow of the storm, allowing it to strengthen.cinlfla wrote:anticyclone
Umm, I don't mean to sound stupid but what is an Anticyclone????
and what i'm asking is if Shear hits a hurricane just right can it help it spin
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- wxman57
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Astro_man92 wrote:WHOW QUESION that I think would be pretty interesting. is it possible if shear hits a hurricane just right can it actually help the circulation (note the drawing)
To answer your question, small amounts of wind shear can actually aid in the intensifation of a hurricane, but your drawing would not represent what I'm talking about. Your drawing basically shows an upper-level aiticyclone over a hurricane (high center), which would aid in the outlow and help it to intensify. What I'm thinking of was Charley last year.
As Charley entered the southeastern Gulf, there was a fairly sharp trof to its northwest. This put Charley into the southeast quadrant of the upper low. Normally, you'd associate an upper-low with wind shear. But Charley wasn't quite close enough for the wind shear to disrupt the storm. Instead, the increased southwesterly winds aloft helped evacuate the large amount of rising air inside Charley, allowing it to deepen quickly prior to landfall. So by drawing air out the top of Charley, it allowed pressure to fall in Charley's center, which allowed the winds to increase.
We saw a similar situation with Lili in 2002. Lili exploded with it ran into the outer periphery of an upper low, but decreased in intensity rapidly at landfall as it encountered shear that was too strong.
There were quite a number of excellent papers on wind shear effects presented at the 26 Conference on Hurricanes and Tropical Meteorology in Miami last year. Here's a link to the papers which were presented. Some of them may still be available online:
http://ams.confex.com/ams/26HURR/techpr ... ed_212.htm
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