[FRIAM] PSC Tornado Visualization (2008) [720p] - YouTube

[thompnickson2 at gmail.com]

Frank, 

I think that was the one that depicted tornadoes as arising from a horizontal barrel roll being bulged upward in the middle and ultimately split into two vortexes, one clockwise one, counter.  This idea does explain why sometimes a weak anti-cyclonic tornado often appear next to a main cyclonic one.   But the idea did seem kind of rinky-dink to me.  You are right, of course, I had no way to visit the math and evaluate it 

 

Nick 

 

Nicholas Thompson

Emeritus Professor of Ethology and Psychology

Clark University

 <mailto:ThompNickSon2 at gmail.com> ThompNickSon2 at gmail.com

 <https://wordpress.clarku.edu/nthompson/> https://wordpress.clarku.edu/nthompson/

 

 

From: Friam <friam-bounces at redfish.com> On Behalf Of Frank Wimberly
Sent: Wednesday, May 13, 2020 9:31 PM
To: The Friday Morning Applied Complexity Coffee Group <friam at redfish.com>
Subject: Re: [FRIAM] PSC Tornado Visualization (2008) [720p] - YouTube

 

The fluid dynamics model used for that visualization is based on first principles.  Many years ago Nick was trying to figure out how tornadoes develop.  I told him I thought this was pretty well understood and I asked Droegemeier for a paper.  He sent one which I forwarded to Nick.  It was full of advanced math.  

 

Frank

 

---
Frank C. Wimberly
140 Calle Ojo Feliz, 
Santa Fe, NM 87505

505 670-9918
Santa Fe, NM

 

On Wed, May 13, 2020, 9:23 PM Marcus Daniels <marcus at snoutfarm.com <mailto:marcus at snoutfarm.com> > wrote:

Nick writes:

 

“The result looks so much like iconic tornado vids that we wannabee tornado chasers idolize that one suspects that the video was back constructed from that film, rather than developing organically from the physics.”

Suppose the equations were extracted, or the behavior re-generated, from a deep neural net (or whatever automated machine learning thing), but nonetheless were predictive of other tornados.    One might reasonably ask, “Who cares?”

Marcus

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