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News Talkback >> 2005 Storm Forum
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Clark
Meteorologist


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Posts: 1710
Re: Area of Interest - Central Tropical Atlantic
      Thu Jul 14 2005 12:39 PM

Keith -- that is what we call Maximum Potential Intensity, which isn't so much a manifestation of the global circulation, but one illustrating what we understand about the circulation of a tropical cyclone and the factors that impact its intensity. All that goes into it are temperatures at the ocean's surface and aloft (at the outflow layer) plus a bunch of other physical variables (drag coefficients and the like), allowing us to come up with a max. theoretical intensity of both wind speed and pressure.

This circulation assumes a Carnot cycle for the tropical storm -- too lengthy to explain here -- but needless to say, it is a direct circulation with inflow at low levels at about the temperature of the SST, rising motion near the center of the storm (slantwise moist ascent), moist outflow aloft, followed by moist and then dry descent at outer radii. It doesn't take into account the eye or the eyewall -- the features of which I've explained in a current post in the News Talkbacks -- but does a pretty good job of capturing the environmental factors affecting a single hurricane's intensity.

The global circulation deals more with the exchange of energy between the midlatitudes, polar regions, and tropics; some of these factors may work their way down to the fine-scale and impact SSTs and the like, but they aren't directly related.

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Entire topic
Subject Posted by Posted on
* Area of Interest - Central Tropical Atlantic Ed DunhamAdministrator Thu Jul 14 2005 12:39 PM
. * * Re: Area of Interest - Central Tropical Atlantic HanKFranK   Sun Jul 10 2005 08:07 AM
. * * Re: Area of Interest - Central Tropical Atlantic Keith234   Sun Jul 10 2005 11:11 AM
. * * Re: Area of Interest - Central Tropical Atlantic HanKFranK   Sun Jul 10 2005 12:33 PM
. * * Re: Area of Interest - Central Tropical Atlantic Keith234   Sun Jul 10 2005 03:16 PM
. * * Re: Area of Interest - Central Tropical Atlantic cjzydeco   Sun Jul 10 2005 05:26 PM
. * * Re: Area of Interest - Central Tropical Atlantic Keith234   Sun Jul 10 2005 05:33 PM
. * * Re: Area of Interest - Central Tropical Atlantic cjzydeco   Tue Jul 12 2005 01:02 AM
. * * Re: Area of Interest - Central Tropical Atlantic Keith234   Tue Jul 12 2005 11:20 AM
. * * Re: Area of Interest - Central Tropical Atlantic Clark   Tue Jul 12 2005 12:40 PM
. * * Re: Area of Interest - Central Tropical Atlantic Lysis   Tue Jul 12 2005 02:06 PM
. * * Re: Area of Interest - Central Tropical Atlantic Clark   Tue Jul 12 2005 07:12 PM
. * * Re: Area of Interest - Central Tropical Atlantic Keith234   Wed Jul 13 2005 04:43 PM
. * * Re: Area of Interest - Central Tropical Atlantic Clark   Thu Jul 14 2005 12:39 PM
. * * Re: Area of Interest - Central Tropical Atlantic B.C.Francis   Tue Jul 12 2005 08:41 PM
. * * Re: Area of Interest - Central Tropical Atlantic Ryan   Tue Jul 12 2005 07:40 PM
. * * Re: Area of Interest - Central Tropical Atlantic HanKFranK   Sun Jul 10 2005 04:25 PM
. * * Re: Area of Interest - Central Tropical Atlantic stormchazer   Sun Jul 10 2005 05:33 PM
. * * Re: Area of Interest - Central Tropical Atlantic HanKFranK   Sun Jul 10 2005 07:32 PM
. * * Re: Area of Interest - Central Tropical Atlantic Keith234   Sun Jul 10 2005 07:48 PM
. * * Re: Area of Interest - Central Tropical Atlantic Keith234   Sun Jul 10 2005 05:27 PM
. * * Re: Area of Interest - Central Tropical Atlantic Lysis   Sun Jul 10 2005 05:27 PM
. * * Re: Area of Interest - Central Tropical Atlantic Keith234   Sun Jul 10 2005 05:28 PM
. * * Re: Area of Interest - Central Tropical Atlantic Lysis   Sun Jul 10 2005 01:24 PM
. * * 98L T-numbers Jamiewx   Sun Jul 10 2005 02:45 PM
. * * 98L now special feature in the Discussion Jamiewx   Sun Jul 10 2005 03:05 PM

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