Come up with simplified weather model

[oubiwann]

See the following:

• https://www.weather.gov/jetstream/models
• https://www.weather.gov/jetstream/mos_max
• https://www.weather.gov/jetstream/300mb (locating the jetstream)
• https://www.weather.gov/jetstream/500mb (locating precipitation fronts with vorticity)
  • Model: https://en.wikipedia.org/wiki/Barotropic_vorticity_equation
  • Blog: http://lukemweather.blogspot.com/2012/05/simplest-kind-of-weather-model.html
• https://www.weather.gov/jetstream/700mb (identifying humidity zones)
• https://www.weather.gov/jetstream/700mb (actual precipitation)
• https://physics.stackexchange.com/questions/145724/atmosphere-model
• https://software.nasa.gov/featuredsoftware/earth-gram-2016

Open sourced weather models:

• http://www.met.rdg.ac.uk/~mike/dyn_models/igcm/

(Note: this ticket was copied from and supersedes hexagram30/map#29.)