create restart XX command to reset a GAHM run

[wwlwpd]

e.g.,

  asgs> restart 08 # where advisory O8 is used to compute nowcast length

Sometimes when the NHC issues intermediate advisories, it can cause some hiccups in the nowcast timings. This issue is to create a command to fix that - initially to run manually, in the future to run automatically if detected.

1. stop your instance if you have not done so already
2. edit statefile
3. set LASTSUBDIR to the directory containing the nowcast for advisory 08, eg., LASTSUBDIR=/work/$USER/asgs373853/08
4. set ADVISORY=08 (so the ASGS thinks the last advisory it saw was 08, and it will pick up and run with the latest advisory immediately)
5. if you have a subdirectory for advisory 10 in your RUNDIR rename it, e.g., mv 10 10.old so ASGS can create a fresh one for this advisory

[jasonfleming]

Same procedure applies to NAM and GFS, it's just that the cycle number is 10 digits rather than 2 :-)