Re: Why do troughs overpower hurricanes?
Posted by
Target on 9/18/2010, 5:38 pm
There are two ways a hurricane can dump heat to make power. Interact with a colder air mass or interact with the stratosphere.
I imagine the cold front reacts with the warm air that the hurricane brings up from the tropics and the resulting rain along the front drops the pressure to the north of the storm.
With Wilma in 2005, I remember a diagonal line across Florida where tropical air hit colder air from the north and it seemed like a low pressure rope pulled Wilma to the Northeast.
While the cold front may suck all the rain out of the hurricane, I don't see it as beating the cane, but letting it do it's thing faster. The cold front lets the hurricane make more rain.
Athough, personally, I find it more interesting when a hurricane busts up into the stratosphere and creates a nice big green blob on the Funktop loop.
Perhaps cold fronts pull the drain on the more interesting convective bursts and rapid intensification that can occur when a hurricane must dump it's heat to the stratosphere. But what do I know....
I think I see a few tiny green spots on Igor now:
http://www.ssd.noaa.gov/goes/east/nwatl/flash-ft.html
http://www.ssd.noaa.gov/goes/east/nwatl/flash-wv.html |
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