Comments on: Category 4 Ike devastates Turks and Caicos; heads for Cuba, central Gulf http://pjmedia.com/weathernerd/2008/09/07/category-4-ike-devastates-turks-and-caicos-heads-for-cuba-central-gulf/ Brendan Loy\'s hurricane blog Sun, 11 Sep 2011 03:42:18 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Shreela http://pjmedia.com/weathernerd/2008/09/07/category-4-ike-devastates-turks-and-caicos-heads-for-cuba-central-gulf/comment-page-1/#comment-709 Shreela Sun, 07 Sep 2008 22:09:31 +0000 http://pajamasmedia.com/weathernerd/2008/09/07/category-4-ike-devastates-turks-and-caicos-heads-for-cuba-central-gulf/#comment-709 Thanks for the upper atmosphere education Brendan. I learned a little about how high pressure zones can 'bounce' a hurricane away if they're a strong enough high pressure zone and that if there was a low pressure zone next to a high pressure zone, the storm would follow the low pressure zone, but that was about it for my understanding. I understand the basics about shears too: if there's shearing, then the storm will weaken (I am never going on "Are you smarter than a 5th grader" show LOL). Could you explain if upper atmosphere zones affects or causes shearing, and if so, how? Thanks! Thanks for the upper atmosphere education Brendan. I learned a little about how high pressure zones can ‘bounce’ a hurricane away if they’re a strong enough high pressure zone and that if there was a low pressure zone next to a high pressure zone, the storm would follow the low pressure zone, but that was about it for my understanding.

I understand the basics about shears too: if there’s shearing, then the storm will weaken (I am never going on “Are you smarter than a 5th grader” show LOL).

Could you explain if upper atmosphere zones affects or causes shearing, and if so, how? Thanks!

]]> By: Alan Sullivan http://pjmedia.com/weathernerd/2008/09/07/category-4-ike-devastates-turks-and-caicos-heads-for-cuba-central-gulf/comment-page-1/#comment-707 Alan Sullivan Sun, 07 Sep 2008 19:42:42 +0000 http://pajamasmedia.com/weathernerd/2008/09/07/category-4-ike-devastates-turks-and-caicos-heads-for-cuba-central-gulf/#comment-707 Check the loops, Brendan. I think we are seeing a slight shift to the right. The Cuba-skimming track is starting to look more plausible. Check the loops, Brendan. I think we are seeing a slight shift to the right. The Cuba-skimming track is starting to look more plausible.

]]> By: pedro http://pjmedia.com/weathernerd/2008/09/07/category-4-ike-devastates-turks-and-caicos-heads-for-cuba-central-gulf/comment-page-1/#comment-706 pedro Sun, 07 Sep 2008 19:30:45 +0000 http://pajamasmedia.com/weathernerd/2008/09/07/category-4-ike-devastates-turks-and-caicos-heads-for-cuba-central-gulf/#comment-706 asshole, Cuba don't need no help from you maldito gringo! asshole, Cuba don’t need no help from you maldito gringo!

]]> By: Rand Simberg http://pjmedia.com/weathernerd/2008/09/07/category-4-ike-devastates-turks-and-caicos-heads-for-cuba-central-gulf/comment-page-1/#comment-705 Rand Simberg Sun, 07 Sep 2008 17:38:45 +0000 http://pajamasmedia.com/weathernerd/2008/09/07/category-4-ike-devastates-turks-and-caicos-heads-for-cuba-central-gulf/#comment-705 To expand, it's not just upwelling that cools the water under hurricane. A hurricane is essentially a large heat engine that gets its energy from the surface heat of the water. Basic thermodynamics would indicate that the water has to cool as it converts its heat to kinetic energy in the form of the winds. In fact, I think that it is this cooling that causes the upwelling, as the warmer water below rises to replace the cooler (and denser) water on the surface, until there is no more warmer water below. Even over a loop, it would eventually run out of fuel, though it might take a while. To expand, it’s not just upwelling that cools the water under hurricane. A hurricane is essentially a large heat engine that gets its energy from the surface heat of the water. Basic thermodynamics would indicate that the water has to cool as it converts its heat to kinetic energy in the form of the winds. In fact, I think that it is this cooling that causes the upwelling, as the warmer water below rises to replace the cooler (and denser) water on the surface, until there is no more warmer water below. Even over a loop, it would eventually run out of fuel, though it might take a while.

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