The CCSM3 scripts have been significantly upgraded from CCSM2 and are based on a completely different design philosophy. The new scripts will generate a set of "resolved scripts" for a specific configuration determined by the user. The configuration includes components, resolution, run type, and machine. The run and setup scripts that were previously in the /scripts directory for CCSM2 are now generated automatically. See the CCSM3 User's Guide for information on how to use the new scripts. The file that contains the ice model namelist is now located in ccsm3/scripts/$CASE/Buildnml_Prestage. The script containing the environment variables used for building the executable file for the ice model is in ccsm3/scripts/$CASE/Buildexe. The contents of the ice model namelist are described in section 4.