How can I use the "user-created input data"?

[Gary]

I'm using the F compset and the f45_g37 resolution in CESM1_2_2.
The sst data from the CESM server is sst_HadOIBl_bc_1x1_clim_c101029.nc, however, I want to use another sst data such as Hadisst.
I know that I need to link my dataset directory to the CESM input data directory by link_dirtree. But how should I modify my sst nc file?
For example, do I need to change the variables name in my data to that in "sst_HadOIBl_bc_1x1_clim_c101029.nc"?
Besides, the spatiotemporal resolution is also different.
What are the rules for using "user-created input data"?
Any help is appreciated.

 

[Gary]

I think I find something. There is a description of input files and variables in $CASEROOT/CaseDoc/docn.streams.txt.prescribed:

      <dataSource>
         GENERIC
      </dataSource>
      <domainInfo>
         <variableNames>
            time    time
            xc      lon
            yc      lat
            area    area
            mask    mask
         </variableNames>
         <filePath>
            /home/gary/CESM/cesm1_2_2/exe/run/input_data/ocn/docn7
         </filePath>
         <fileNames>
            domain.ocn.1x1.111007.nc
         </fileNames>
      </domainInfo>
      <fieldInfo>
         <variableNames>
            SST_cpl    t
         </variableNames>
         <filePath>
            /home/gary/CESM/cesm1_2_2/exe/run/input_data/atm/cam/sst
         </filePath>
         <fileNames>
            sst_HadOIBl_bc_1x1_clim_c101029.nc
         </fileNames>
         <offset>
            0
         </offset>
      </fieldInfo>

And I think I just need to replace the data in SST_cpl by Hadisst since their grid are the same.
I will update my result after trying that.

 

[dbailey]

You'll need to copy CaseDocs/docn.streams.txt.prescribed to user_docn.streams.txt.prescribed in the main case directory. Edit the user_ version.

 

[Gary]

You'll need to copy CaseDocs/docn.streams.txt.prescribed to user_docn.streams.txt.prescribed in the main case directory. Edit the user_ version.

Thanks a lot. I noticed the instructions in user_nl_docn and it worked.

 

[nuvolet]

Thanks a lot. I noticed the instructions in user_nl_docn and it worked.

Hi,

I would be also interested to create my own input data when I run CESM, in particular I am using edition 2.2.
In what step of creating a new case I should modify the docs.streams.txt.prescribed?
These files can be created for any kind of input we want to modify/customized such as the AOD (aerosol optical depth)?.
Thanks in advance