1.  summary: one-degree tripole region-mask file 

    vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
    For testing purposes only -- not to be used in scientific experiments
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

    Original filename: lmask.360x240.nomarg.da

2.  created by: Frank Bryan
 
3.  date and time: Approximately 10 May 2005

4.  platform: Mac
 
5.  dataset format: ieeei4
 
6.  endian: big
 
7.  archival copy location:

    /CCSM/inputdata/ocn/pop/tx1v1/grid/region_mask_20050510.ieeei4
    /CCSM/inputdata/ocn/pop/tx1v1/grid/region_mask_20050510.readme
                    
 
8.  creation details:

This is a simple region mask with land=0 and ocean=1, which is to be used only
for tripole grid testing purposes only.