$CTSMROOT/tools/mkmapgrids/README June08/2018 NCL script to create a SCRIP grid file for a regular lat/lon grid. To use the script, set the following environment variables Required (or defaults to a single point over Boulder Colorado) PTNAME ! name of your grid S_LAT ! Southern latitude corner N_LAT ! Northern latitude corner E_LON ! Eastern longitude corner W_LON ! Western longitude corner Optional: NX ! Number of grid points along longitude (default 1) NY ! Number of grid points along latitude (default 1) IMASK ! 0 or 1, mask to use if all points are active or not (default active) PRINT ! TRUE/FALSE do extra verbose printing or not (default FALSE) GRIDFILE ! Output filename