¥Climate modeling is hard.
¥We can never obtain exact solutions to
the governing equations.
¥The spatial resolution (grid point
spacing) possible with present-generation computers leaves out many things we are interested in, or requires that we represent them
using educated guesswork (i.e., parameterization).
¥There are advantages to doing lots of
runs using lots of models (i.e., ensemble simulations).
¥Regional climate models give a way to
use improved resolution over a particular area of interest.