Jake
Posted by
JAC on 6/30/2010, 10:51 pm
Sorry, I got side tracked for a while.
Actually seen it many times.
RI comes when a hot-tower fires on the eyewall.
Two indications of a hot tower are extremely high rain rates and a cumulus nimbus that shoots very high above the cirrus canopy.
For altitude, the bar is 15km. Anything above that is considered a hot tower.
The mechanism is rapid latent heat release into the core due to rapid condensation directly adjacent to the core.
There is a lot of literature covering hot-towers.
I was also reading a paper on high theta-e measurements made by dropsondes in the eye and on the eyewall that correlate to RI.
If interested I can pass these along.
Let me know if you would like to see them.
As a side note, one of the pioneers in hot-tower research died a few months ago.
We had a thread going on here about her.
She helped design the TRMM satellite which has a down-looking precipitation radar that was specifically designed to ID hot-towers.
One mechanism that may have sparked the hot-tower this afternoon was an influx of very unstable air from Mexico.
I noticed there was not a lot of cloud cover ahead of Alex and that helped to heat the ground and destabilize the air to a high degree.
I didn't get a sounding today, but yesterday I was seeing CAPE's of greater than 4000 over the Mexican coast in the afternoon.
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In this thread:
948mb -
Chris in Tampa,
6/30/2010, 8:09 pm- RI on ADT - JAC, 6/30/2010, 8:18 pm
- Re: RI on ADT - Jackstraw, 6/30/2010, 8:24 pm
- Re: RI on ADT - BobbiStorm, 6/30/2010, 8:28 pm
- Re: RI on ADT - Bateauxdriver, 6/30/2010, 8:42 pm
- Re: RI on ADT - JAC, 6/30/2010, 8:47 pm
- JAC?? - Jake, 6/30/2010, 9:01 pm
- Re: JAC?? - Chris in Tampa, 6/30/2010, 9:05 pm
- Re: JAC?? - Jake, 6/30/2010, 9:10 pm
- Jake - JAC, 6/30/2010, 10:51 pm
- Re: Jake - BobbiStorm, 6/30/2010, 11:05 pm
- Re: 948mb - CMJ, 6/30/2010, 8:11 pm
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