I haven't done this before but I imagine your input files would need to be global 1deg domain and surface datasets. You could get these filenames by creating a 1deg global case, running preview_namelists, and then looking at lnd_in. @erik may be able to provide further guidance here. If you are using CTSM master/main then the subset_data.py might be an alternative script to use, although I think there is further development of this script in an upcoming tag.
Hi @oleson, Thank you for your kind help. I have followed your instruction: create a case for 1 deg, get the surface and atm dataset from ./getregional_datasets.pl. I put the atm and surface dataset in my user_nl_clm but in case.build step is failing and showed the following error. I have attached the screenshots.
Hi @oleson thank you again. Can I use my 0.125 deg resolution run ATM_DOMAIN_FILE (domain.lnd.0.125nldas2_0.125nldas2.190410.nc) for this 1 deg run? In that case do I need to only change the surface dataset that I got from ./getregional?