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Looping over a single year using HIST compsets

H

hsjung

Hee-Sung Jung
New Member
What version of the code are you using?

I am using CESM 2.1.5

Have you made any changes to files in the source tree?

No

Describe your problem or question:

Hi everyone,

I am trying to loop over a single year multiple times to get a spin-up run for an experiment.
To do this I have been trying to branch from a restart file from one of the CESM2-LE runs which is run with the compset BHISTsmbb.
I understand that compsets that start with 1850 or 2000 will loop over the forcings representative of that time period while the HIST compsets have a transient forcing.
Is there anyway that I can configure the BHIST compset to loop over a certain year of forcing (for example loop over year 2010 and force it to behave like B2010)?

Thanks!
 
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xnnzka

xnnzka

xnnzka
Member
Hello Hee-Sung,

Regretfully, I do not know if there is B2010. So I also want to listen suggestions from others.
From my view, I think you could modify the namelist, repeating forcings from one year over variable dynamics use.
I use CAM to as an example:
In user_nl_cam:
&chem_inparm
ext_frc_type = 'CYCLICAL'
ext_frc_cycle_yr = 2010
srf_emis_type = 'CYCLICAL'
srf_emis_cycle_yr = 2010

&chem_surfvals_nl
flbc_type = 'CYCLICAL'
flbc_cycle_yr = 2010

I must say this might be a little tedious, you have to make such modifications in all namelists.
 
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H

hsjung

Hee-Sung Jung
New Member
Ahh I see,
Thanks for the advice!
If there is a streamlined method for adjusting each component to cycle over a single year's forcing, I would also love to learn about them too.
 
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