I am interested in running WRF to examine modern and future climate over Oklahoma and north Texas,

both as 20-year simulations forced by an IPCC AR4 global model. I have experience with other RCMs but wish to expand into WRF, so any advice on an experiment design would be appreciated.

My understanding is that the ratio of parent to child nested domain should be 3:1, right?

So if I wish to perform a non-hydrostatic simulation of about 6-km in the inner-most domain,

I could use the roughly 160-km GCM to force WRF for 3 nested domains of 53 km, 17 km, and 6 km, right?

The 6-km domain would cover Oklahoma and N Texas (the outermost domain could cover the middle

half of the country probably). Does this sound practical?

Any idea how long it would take to run a simulation year for such a grid (even a rough estimate)?

I want to be sure I am not proposing to run a simulation that would take forever and is impractical.

I am interested in weather extremes so I wish to run at a high spatial resolution.

Thanks,

Michael