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Archives >> 2005 News Talkbacks

Clark
Meteorologist


Reged: Wed
Posts: 1710
Loc: Great Lakes
Re: Delta... why not?
      Wed Nov 23 2005 01:52 AM

Mark brings up a good point via the NHC discussion on Olga -- it's not just the surface temperatures that are important, although having that surface heating (and moisture) does help a lot. Instead, the key factor is the difference in temperature between the ocean's surface and the top of the troposphere, or the tropopause. If you have cooler than ideal SSTs, say 5C below normal, you can "make up for it" with cooler temperatures at the tropopause, also 5C cooler than what you might normally see in the tropics.

This all works because we view a tropical cyclone as a heat engine. As with all machines, a heat engine has a specified efficiency -- you aren't going to get it working perfectly, in many cases. With a tropical system, the efficiency is generally about 30%; this efficiency is specified by the difference in temperatures noted above. This helps to drive a lot of the midlatitude "tropically transitioned" tropical systems and was a key factor in the development of Vince.

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Entire topic
Subject Posted by Posted on
* Delta... why not? HanKFranK Wed Nov 23 2005 01:52 AM
. * * Re: Delta... why not? FloydRTurbo   Wed Nov 23 2005 10:31 PM
. * * Re: Delta... why not? UKCloudgazer   Thu Nov 24 2005 05:25 AM
. * * Re: Delta... why not? FloydRTurbo   Thu Nov 24 2005 12:10 PM
. * * Re: Delta... why not? vineyardsaker   Tue Nov 22 2005 08:11 PM
. * * Re: Delta... why not? Rich B   Tue Nov 22 2005 05:28 PM
. * * Re: Delta... why not? typhoon_tip   Tue Nov 22 2005 06:29 PM
. * * Re: Delta... why not? Margie   Tue Nov 22 2005 06:03 PM
. * * Re: Delta... why not? Clark   Tue Nov 22 2005 07:48 PM
. * * Re: Delta... why not? Old Sailor   Tue Nov 22 2005 07:58 PM
. * * Re: Delta... why not? Clark   Tue Nov 22 2005 08:54 PM
. * * Re: Delta... why not? Old Sailor   Tue Nov 22 2005 09:06 PM
. * * Re: Delta... why not? HanKFranK   Tue Nov 22 2005 09:31 PM
. * * Re: Delta... why not? Old Sailor   Tue Nov 22 2005 09:53 PM
. * * Re: Delta... why not? HanKFranK   Tue Nov 22 2005 11:51 PM
. * * Re: Delta... why not? Margie   Wed Nov 23 2005 12:24 AM
. * * Re: Delta... why not? Bloodstar   Wed Nov 23 2005 01:30 AM
. * * Re: Delta... why not? Clark   Wed Nov 23 2005 01:52 AM
. * * Re: Delta... why not? danielwAdministrator   Wed Nov 23 2005 02:20 AM
. * * Re: Delta... why not? Bloodstar   Wed Nov 23 2005 02:25 AM
. * * Re: Delta... why not? danielwAdministrator   Wed Nov 23 2005 02:32 AM
. * * Re: Delta... why not? dave foster   Wed Nov 23 2005 08:39 AM
. * * Re: Delta... why not? UKCloudgazer   Wed Nov 23 2005 10:39 AM
. * * Re: Delta... why not? dave foster   Wed Nov 23 2005 11:45 AM
. * * Re: Delta... why not? HanKFranK   Wed Nov 23 2005 12:12 PM
. * * Re: Delta... why not? Rabbit   Wed Nov 23 2005 01:57 PM
. * * Why is the NHC not naming this storm? vineyardsaker   Wed Nov 23 2005 02:59 PM
. * * Re: Why is the NHC not naming this storm? Margie   Wed Nov 23 2005 03:41 PM
. * * Re: Why is the NHC not naming this storm? Storm Hunter   Wed Nov 23 2005 03:24 PM
. * * Re: Why is the NHC not naming this storm? Lee-Delray   Wed Nov 23 2005 03:41 PM
. * * Re: Why is the NHC not naming this storm? Trekman   Wed Nov 23 2005 04:17 PM
. * * Re: Why is the NHC not naming this storm? typhoon_tip   Wed Nov 23 2005 04:22 PM
. * * Re: Why is the NHC not naming this storm? Rabbit   Wed Nov 23 2005 03:42 PM
. * * Re: Why is the NHC not naming this storm? HanKFranK   Wed Nov 23 2005 03:57 PM
. * * Re: Why is the NHC not naming this storm? *Killed -- Sent to Graveyard* La Nimo   Wed Nov 23 2005 04:23 PM
. * * Re: Why is the NHC not naming this storm? *Killed -- Sent to Graveyard* dave foster   Wed Nov 23 2005 04:39 PM
. * * Re: Why is the NHC not naming this storm? Random Chaos   Wed Nov 23 2005 05:16 PM
. * * Re: Why is the NHC not naming this storm? Margie   Wed Nov 23 2005 05:37 PM
. * * Re: Why is the NHC not naming this storm? Tak   Wed Nov 23 2005 05:48 PM
. * * Re: Why is the NHC not naming this storm? Tak   Wed Nov 23 2005 05:55 PM
. * * Re: Why is the NHC not naming this storm? tpratch   Wed Nov 23 2005 06:20 PM
. * * Re: Why is the NHC not naming this storm? GuppieGrouper   Wed Nov 23 2005 06:59 PM
. * * Interesting Note danielwAdministrator   Wed Nov 23 2005 07:46 PM
. * * hmmm.. HanKFranK   Wed Nov 23 2005 08:32 PM
. * * Re: hmmm.. LoisCane   Wed Nov 23 2005 09:45 PM
. * * Re: hmmm.. Margie   Wed Nov 23 2005 10:00 PM
. * * Delta Burke's direction..? ltpat228   Wed Nov 23 2005 10:19 PM
. * * Re: hmmm.. emackl   Wed Nov 23 2005 08:40 PM
. * * Re: hmmm.. NONAME   Wed Nov 23 2005 08:48 PM
. * * Re: hmmm.. dave foster   Wed Nov 23 2005 09:18 PM
. * * Re: Why is the NHC not naming this storm? UKCloudgazer   Wed Nov 23 2005 05:48 PM
. * * Re: Why is the NHC not naming this storm? Rabbit   Wed Nov 23 2005 05:06 PM
. * * Re: Why is the NHC not naming this storm? typhoon_tip   Wed Nov 23 2005 04:18 PM
. * * Re: Why is the NHC not naming this storm? Margie   Wed Nov 23 2005 04:04 PM
. * * Re: Delta... why not? ltpat228   Wed Nov 23 2005 08:46 AM
. * * Re: Delta... why not? Lee-Delray   Wed Nov 23 2005 10:48 AM
. * * Re: Delta... why not? ltpat228   Wed Nov 23 2005 11:34 AM
. * * Re: Delta... why not? Rabbit   Wed Nov 23 2005 11:22 AM
. * * Re: Delta... why not? dave foster   Wed Nov 23 2005 11:49 AM
. * * Re: Delta... why not? damejune2   Wed Nov 23 2005 10:24 AM
. * * Re: Delta... why not? Lee-Delray   Wed Nov 23 2005 08:54 AM
. * * December Doombot!   Wed Nov 23 2005 03:30 AM
. * * Re: Delta... why not? danielwAdministrator   Wed Nov 23 2005 01:21 AM
. * * Re: Delta... why not? HanKFranK   Tue Nov 22 2005 09:04 PM
. * * Re: Delta... why not? Bloodstar   Tue Nov 22 2005 07:05 PM
. * * Re: Delta... why not? Rabbit   Tue Nov 22 2005 03:46 PM
. * * Re: Delta... why not? Rich B   Tue Nov 22 2005 04:20 PM
. * * Re: Delta... why not? ltpat228   Tue Nov 22 2005 04:37 PM
. * * Re: Delta... why not? Rich B   Tue Nov 22 2005 02:37 PM

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