CAM-CLM tsi and other forcing inquiries

[wvsi3w]

Hello,
I am working with CESM2.1.3, and I have done several simulations with CLM5.
I have asked a question related to using different TSI and the related process that I have asked here:

Guidance on Running with LME datasets with CESM2.1.3 (CLM5)

Unfortunately, we can't provide any specific answers since we don't have any experience with this type of workflow. Our suggestion is to experiment with a short sequence of simulations, e.g., just a few years for each segment, to see how the workflow should be implemented.

bb.cgd.ucar.edu

And I have been referred to this CAM forum.

My questions are these:
1- How to use a different TSI file for this path inputdata/atm/cam/solar/ ? Is there a way to assign it in the namelist options, and how? I found that path in my IHIST case, which is weird because I can't find it in I1850 case! And as Sam said, this shouldn't be there if it is for land compsets. So, if I want to run a fully coupled or CAM-CLM case, how should I assign my tsi file (should I replace the existing file with mine by "overwriting" it? or is there a way to refer to it in the user-defined namelists?)
2- And how to use a different volcanic file
I have found these paths in here, but I dont know how to replace them:
(inputdata/atm/cam/physprops/
inputdata/atm/cam/chem/emis/CMIP6_emissions_2000climo/)
Should I just overwrite them with mine?

Thank you for your support

 

[peverley]

Hi,

A couple thoughts that might help you.

1. If you want a fully coupled CAM-CLM case, you'll want to use an F compset rather than an I compset (e.g. FHIST or F1850). "I" compsets are going to give you use a data atmosphere that you won't be able to configure the way you want.

2. Once you create a new case with an F compset, you can override the default tsi file with the following namelist in user_nl_cam:

solar_irrad_data_file = '<full path to file>'

3. What specific volcano file are you looking to replace? If you let me know, I can point you to more namelist options. Alternatively, if you create an F compset case and then run:

./case.setup
./preview_namelists

And then inspect the atm_in file in your run directory, you should be able to find the file that you are wanting to replace and use that namelist option in user_nl_cam.

4. FYI: You will find that F compsets run significantly slower than I compsets.

Hope that helps,
Courtney