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About Ryan Hastings
Expertise
I can answer general questions about meteorology and atmospheric physics, and more specialized questions relating to convective storms, especially supercells and tornadoes.

Experience
I am a graduate student at Penn State specializing in mesoscale meteorology. I am also on VORTEX2.

Organizations
Chi Epsilon Pi, American Meteorological Society

Education/Credentials
Did my M.S. on shallow boundary layer convection and its effects on moisture fields, and have begun a Ph.D. on supercell mergers.

 
   

You are here:  Experts > Science > Weather > Meteorology (Weather) > Tornado outbreaks as patterned mathematical processes

Meteorology (Weather) - Tornado outbreaks as patterned mathematical processes


Expert: Ryan Hastings - 11/2/2009

Question
Would you care to verify that

       //sin x cos x-sin^2x =the cardioid

You see, this is a derivation of the balancing terms of the pressure field and horizontal velocity equations found in first year dynamic meteorology from

              du/dt=-1/rhopartial pressure/partial x+fv
              dv/dt=-1/rhopartial pressure/partial y-fu

The point is that past tornado outbreaks can be resolved to show that the cardioid is involved in placing storm cells in a cardioid series/sequenced process, hence, tornado outbreaks are not random but deterministic!  

Answer
Well, first off tornado outbreaks are not random events at all.  They are caused by a number of well-known atmospheric processes, and it's not uncommon for the possibility of a major outbreak to be recognized several days before the event.  They are not random, but there is a limit to our ability to predict them more than a few days in advance because the atmosphere is a chaotic system.

The equations you mention are the result of rewriting the Navier-Stokes equations for an observer in a rotating frame and scaling them for the synoptic scale.  As such, they're okay for getting a first approximation for large scale behavior; but they're mostly useful as a starting place for deriving quasigeostrophic theory.  Certainly the mathematics of the occurrence of a tornado itself would require including the stress tensor as well as finding a way to treat turbulence.  And for predicting storm cells you'll definitely need some form of the conservation equations for energy and mass and an equation relating vertical velocity to buoyancy.

I do not understand what you mean when you say that "the cardioid is involved in placing storm cells in a cardioid series/sequenced process."

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