These files can be unpacked with:
tar -zxvf CAM_1-20.gztarIf you get an error about -z being an unsupported flag, try this instead:
gunzip -c CAM_1-20.gztar | tar -xvf -Note the trailing single dash above; it tells tar to read standard input for the data to unpack.
They'll create subdirectories CAM, CLM, and DART_MPI with the appropriate files in them. So they should be unpacked where they won't interfere with any other CAM, CLM, or DART_MPI directories that you've already unpacked (initial condition sets with different resolutions or dates).
The filter_ic.#### files in DART_MPI are binary and are "little-endian", so they should be readable on Intel (including recent Macs), AMD and SGI chips. If you are running on a "big-endian" machine (e.g. an IBM Power system, or a pre-Intel Mac), there is a conversion program in .../DART/utilities/swabrestart.c that can be compiled:
cc -o swabrestart swabrestart.cand copied over to the current directory, and then run like this:
./swabrestart < filter_ic.0001 > filter_ic_bigend.0001(The swabrestart program will not run correctly on a little-endian machine, but it is not needed there. It was written to convert files into big-endian when running on a big-endian machine.)