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7.2 Example 2: Restart run

The following namelist generates a restart run starting from the last file generated by Example 1.

 &clmexp
 CASEID         = 'test01' 
 NSREST         =  1 
 NELAPSE        = -1 
 FSURDAT        = '$CSMDATA/srfdata/cam/clms_64x128_T42_c020514.nc'
 FINIDAT        = ' '
 FPFTCON        = '$CSMDATA/pftdata/pft-physiology' 
 FRIVINP_RTM    = '$CSMDATA/rtmdata/rdirc.05'
 OFFLINE_ATMDIR = '$CSMDATA/NCEPDATA' 
 START_YMD      =  19971231 
 DTIME          =  1800 
 HIST_NHTFRQ(1) =  -24
 /


NSREST = 1
Requests a restart run. A restart run finds the name of the appropriate restart file automatically by reading the file, lnd.CASEID.rpointer. In this example, the pointer file will be lnd.test01.rpointer. Restart runs are meant to be 'seamless,' producing the same output as runs which were not restarted.


NELAPSE = -1
Specifies the run's ending time to be one day after the point of restart. This is equivalent to entering NESTEP = -2 instead, since the previous run stopped at the end of day 1.


All other namelist variables remain the same to ensure a 'seamless' restart (for information, see example 1). Also, for a seamless restart, the user should generally execute the code with the same executable used in the initial run (ie, without compiling the code again).



csm@ucar.edu