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Changing output frequency for a run continuation?

Hi there,

I've run a cesm2.1.3 simulation for a number of years (compost = 1850_CAM40_CLM40%CN_CICE_DOCN%SOM_RTM_SGLC_SWAV). I want to continue the simulation, but change the output frequency for certain variables.

In particular, I modifying user_nl_cam as follows:

FINCL2 = 'DEI_rad', 'MU_rad', 'LAMBDAC_rad', 'ICIWP_rad', 'ICLWP_rad', 'DES_rad', 'ICSWP_rad', 'CLD_rad', 'CLDFSNOW_rad'
nhtfrq = 0,-1
mfilt = 1,24
avgflag_pertape = 'A','I'
ndens = 2,2


I then ran ./preview_namelists, and this updated ./run/atm_in as intended. But when I continued the run (submitted to queue using ./case.submit), the output frequency remained the same (i.e. was not modified as intended).

Any idea why the model is not following the data output specifications in atm_in?

Cheers,

Mike
 

katec

CSEG and Liaisons
Staff member
Hi Mike,

Unfortunately, CESM does not allow changes to history streams during a continue run. To make changes to history streams, you will need to make a branch. The easiest way to do this is to use "create_clone" to clone your case into a new case, make your history changes in the new case, and then change the xml variable RUN_TYPE to "branch." Also, CONTINUE_RUN should be FALSE, and your REF_CASE should be your previous case. This will continue your previous run on as a branch with new history streams. There's more information on branch runs here: 5. Running a Case — CIME cime5.6 documentation
 
Hi Mike,

Unfortunately, CESM does not allow changes to history streams during a continue run. To make changes to history streams, you will need to make a branch. The easiest way to do this is to use "create_clone" to clone your case into a new case, make your history changes in the new case, and then change the xml variable RUN_TYPE to "branch." Also, CONTINUE_RUN should be FALSE, and your REF_CASE should be your previous case. This will continue your previous run on as a branch with new history streams. There's more information on branch runs here: 5. Running a Case — CIME cime5.6 documentation
Thanks @katec, that's super clear!
 
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