Atmospheric forcing files for a POP run

[colepersch]

Hello, my name is Cole Persch and I'm a graduate student at CU Boulder.

I'm wondering if someone could direct me to instructions to create atmospheric forcing files for an ocean-only simulation. These forcings would be extracted from a coupled ocean and atmospheric case. We're specifically looking to run G1850ECO.

Thank you!

 

[cesm_beginner]

There are some instructions I found on the Internet. However, I cannot make it from this instruction. You can refer to it.
Here are the instructions:

Say I want to change precipitation.
“cp ~/cases/GIAF_wind_fw1/CaseDocs/datm.streams.txt.CORE2_IAF.GCGCS.PREC~/cases/GIAF_wind_fw1/user_datm.streams.txt.CORE2_IAF.GCGCS.PREC”
***note that add “user_” in the front of the file name ***

Open file “user_datm.streams.txt.CORE2_IAF.GCGCS.PREC”. Change the second file pathto your forcing data file path.
Change the listed data filename to your own data file name. Prepare your own data assimilar to the original data as possible. For example, use annual data and ncfile format and same resolution.

Open “~/cases/GIAF_wind_fw1/user_nl_datm”, copy “stream = … , … , … , … ” from “~/cases/GIAF_wind_fw1/CaseDocs/datm_atm_in” to user_nl_datm, then change the variable and year range you want to change.

After building the case, check “/glade/scratch/username/GIAF_wind_fw1/run/datm.streams.txt.CORE2_IAF.GCGCS.PREC” and “~/cases/GIAF_wind_fw1/CaseDocs/datm.streams.txt.CORE2_IAF.GCGCS.PREC” to make sure it is changed successfully.

If you succeed, please help me!