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5.4 Modifying Restart Files

Restart file writes and reads can be found in the module $ice\_history$. The structure of the restart files can be surmised from the writes and reads in the routines $dumpfile$ and $restartfile$ respectively. One needs to determine where in the time sequencing the appropriate restart field(s) need(s) to be assigned, and then written by adding extrae write code in $dumpfile$, as well as read code in $restartfile$. Exact restarts can be checked by running a startup run more than two days, rerunning but stopping at least one day short of the first run, and then restarting. The diagnostic log file printout from the sea ice model at the end of the first and the latter two runs should be identical. This ensures bit-for-bit restartability.