...
In its default nudging configuration the model requires a spectral and a gridpoint forcing file every six hours, at 000000, 060600, 121200, and 18 1800 UTC.
The default naming convention for these files are rlxmlshYYYMMDDHHHH for the spectral files, and rlxmlggYYYYMMDDHHHH for the gridpoint files. YYYY, MM, DD, HH HHHH represent the year, month, day and hour of the forcing data. The model will expect to find these files in the experiment directory unless the path variables CSPSHRLX and CSPGGRLX in the namelist are set.
Using IFS – Scripts Branch
...