The POP distribution you obtained is probably in the form of a compressed tar file. You must first uncompress the tar file using
uncompress popXXXX.tar
where XXXX refers to the version number which appears in the file name. Then the tar archive must be unpacked using
tar -xvf popXXXX.tar.
This process will result in a directory named pop with several subdirectories containing source code, templates for various input files, utilities and test codes.
In order to build a version of POP to run, a directory with the appropriate makefiles and input files must be created. In the main POP directory, a script has been provided to create all the necessary structure. Typing
setup_run_dir dirname [model]
will create a directory called dirname with all
the necessary makefiles and input files. A sub-directory
called compile will also be created to provide a
work area for the compilation process. The optional
argument model will copy files that are specific
to a standard resolution or model setup. One example
of such a setup is the
test case
which should be used to test the code for the first
time.
CESM1 users should follow the create_newcase instructions in the CESM1 User's Guide to create a new run directory.