Elsayed: I have put a tar file of tgcm15 (tiegcm) source on the hao anon ftp site, ftp://download.hao.ucar.edu in /pub/foster, file name tgcm15.tar.Z. You can uncompress and extract this tar file, and read the README file. I suggest you try running this on the ncar IBM's first (babyblue or blackforest) before porting to your own system. I set -DMSS in the Makefile, indicating presence of the NCAR mass store. That way it will get the netcdf input source history from the mss when you run on the NCAR system. The local disk file will be FOSTER.tgcm15.peqse01_ibm.nc. (mss file /FOSTER/tgcm15/peqse01_ibm.nc). When you run on your own system, rebuild without -DMSS, and put the source history file in the cwd. --Ben