Ethan has developed the Intermediate Complexity Atmospheric Research model (ICAR) which is capable of running hundreds to thousands of times faster than state of the art regional climate models (e.g. WRF) while still providing ~90% of the information about precipitation and temperature patterns. ICAR will allow climate models to be downscaled based on first principles instead of statistics. ICAR simulations can run with a high-resolution over the continental US for over a hundred years for each of one hundred differen climate model scenarios with only modest computational costs.