To anyone who might be interested,
Here are my steps for ingesting CCSM3.0 data in NetCDF format (from NCAR's MSS) into WRF-ARW:----------------------------------------------------------------------------------------------------------------
1) Use the NCO suite of utilities to extract the variables and times that you want from the raw CCSM3.0 output. The end result is a single netCDF file with all the surface and 3D variables over a given time period.
2) Use the NCL function called vinth2p to interpolate the 3D variables in the file to pressure levels.
http://www.ncl.ucar.edu/Document/Functions/Built-in/vinth2p.shtmlThe problem with this function is that is seems to do a lousy job on the specific humidity variable
3) Now comes the fun part , you have to write a fortran code to convert the netcdf file to the wrf intermediate format, here is a link:
http://www.mmm.ucar.edu/wrf/OnLineTutorial/Basics/IM_files/index.html------------------------------------------------------------------------------------------------------------
Now obviously the fortran code in step #3 could do the interpolation to pressure levels and thus eliminate the need for NCL and step #2 entirely. For what it's worth these are the steps I followed, probably not the best way of doing things but maybe it will help some of my fellow nerds out there...
If anyone knows of a better (or just simpler way) of ingesting CCSM output into WRF I would be very curious to hear about it.
-mj