This is the NCAR Command Language (NCL) Graphics library.
To see what versions of NCL NCARG are available type
module avail ncl_ncarg
To see what other modules are needed, what commands are available and how to get additional help type
module help ncl_ncarg
To use NCL NCARG, include a command like this in your batch script to load the ncl_ncarg module:
module load ncl_ncarg
Be sure you also load any other modules needed, as listed by the
module help ncl_ncarg command.