Hanging Out with Supermodels

1
Hanging Out with Supermodels
Models

• Ted Russell
• Georgia Tech

Computer
Code
Yes, we have our own magazine!
2
Supermodels and You

• Built and natural environments are very complex
  systems
• Huge payoffs to be able to understand how they
  will respond to human/natural intentional/unintent
  ional perturbations
• Emissions controls
• Land-use planning
• Transportation planning
• Current computational systems allow us to
  simulate a variety of systems affecting future
  air quality
• Emissions
• Traffic and other
• Atmospheric dynamics
• Economics
• Climate
• Etc.

Is this a built or natural environment?
Theres a joke here involving laptops, but I am
not going there.
3
Supermodels Undressed

• Underneath all of the dressing they are simply
  representation of physical, chemical, and
  economic processes
• Result set of mathematical equations
• Numerical integration routines
• Scientifically most sound method to assess how
  our systems will respond

Supermodels undressed air quality model
Computational Planes
5-20
50-100
50-200
Computational grid
Numerics CAxBE
Emissions
Meteorology
200 species x 10000 hor. grids x 20 layers 40
million coupled, stiff non-linear differential
equations
I was warned not to use a state-owned computer to
find the corresponding figure for this slide
4
What You Will See Today

• How air quality modeling is going to calm our
  hearts
• Jim Boylan
• Traffic, traffic everywhere, but where are we
  going, how fast can we get there, and what are we
  doing to the air?
• Randy Guensler
• Supermodels They dont have to be so bright to
  get what they want
• Anna Nicole Smith and Doug Noonan
• Looking to tomorrow
• Talat Odman

I know, not exactly what you were hoping for,
though I am told Jim Boylan might have something
5
Parting Words
All models are wrong, but some are useful
Some go bad
6
My FavoriteSupermodels