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Split model input, Restart Runs & FDDA

• If you have only ONE MMINPUT_DOMAINx file(s), which contain all the time periods for your ENTIRE model run, creating a restart run is NO different from ANY other restart run.
  
• If you have split input file and are NOT running FDDA as well. If you are, see the following example.
   
• This example is ONLY if you have split input file and ARE running FDDA as well.

configure.user

No different settings are required here

mm5.deck

Run the model for 2 months, and do this in 2 runs, one month per run. Initial time for run is Jan 01, 2005 Input data for month one:      MMINPUT_DOMAIN1_01 ; LOWBDY_DOMAIN1_01 ; BDYOUT_DOMAIN1_01 Input data for month two:      MMINPUT_DOMAIN1_02 ; LOWBDY_DOMAIN1_02 ; BDYOUT_DOMAIN1_02 SWITCH FDDA ON FOR ENTIRE 2 MONTHS

INITIAL RUN

COPY or LINK:
     MMINPUT_DOMAIN1_01  to   MMINPUT_DOMAIN1
     LOWBDY_DOMAIN1_01   to   LOWBDY_DOMAIN1
     BDYOUT_DOMAIN1_01   to   BDYOUT_DOMAIN1

TIMAX = 44640.,	; 31 days in first month
TISTEP = 240.,
IFREST = .FALSE.,    IXTIMR = 720,	; this is not a restart run ; thus the time setting here has no impact
IFSAVE = .TRUE.,    SVLAST = .TRUE.,    SAVFRQ = 720.,	; save data for restart ; We will only save the last restart file - good to save space ; save restart file every 12 hours

RESTART RUN

COPY or LINK:
     MMINPUT_DOMAIN1_02  to   MMINPUT_DOMAIN1
     LOWBDY_DOMAIN1_02   to   LOWBDY_DOMAIN1
     BDYOUT_DOMAIN1_02   to   BDYOUT_DOMAIN1

MOVE: SAVE_DOMAINx   to   RESTART_DOMAINx

TIMAX = 84960.,	; total run time for Jan and Feb
TISTEP = 240.,
IFREST = .TRUE.,    IXTIMR = 44640,	; this is a restart run ; restart from 44640 - look in mm5.print.out for the EXACT time the restart file was created (for very long runs time may drift, and you need the exact time for a correct restart)
IFSAVE = .TRUE.,    SVLAST = .TRUE.,    SAVFRQ = 720.,	; We would still like to create restart files every 12 hours
IFRSFA = .TRUE.,   CDATEST = 2005-01-01_00:00:00'	; this is a RESTART run, AND FDDA is ON, AND multiple input FILES are used ; set time to initial model start time

NOTE in this case we need 3D information from the second input as well (MINPUT_DOMAIN1_02), and MUST therefore have this file available in the MM5/Run/ directory. As we also still need the initial model start time information (which normally would have come form the MMINPUT_DOMAIN1_01 file), we provide this information to the model via the "IFRSFA" and "CDATEST" parameters.