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Running CLM diagnostics
This page contains instructions for a few ways of running CLM diagnostics with diag_run.
In the examples below, it is assumed that you are in the bin directory of a clone of this repository.
For your use, replace <n1850.ne30_tn14.hybrid.20240829> with your case name.
- For comparing new CLM with observations (model-obs comparision)
One should use -m ctsm to indicate it is processing the new CLM.
./diag_run -m ctsm -c <n1850.ne30_tn14.hybrid.20240829> -s 1 -e 14 -i /projects/NS9560K-datalake/noresm3/case
Sample output: https://ns9560k.web.sigma2.no/datalake/diagnostics/noresm/yanchun/n1850.ne30_tn14.hybrid.20240829/CLM_DIAG/yrs1to14-obs/
- For comparing two new CLM simulations (model1-model2 comparison)
/diag_run -m ctsm -c1 <n1850.ne30_tn14.hybrid.20240829> -s1 1 -e1 14 -c2 n1850.ne30_tn14.hybrid_fatessp.202401007 -s2 1 -e2 14 -i1 /projects/NS9560K-datalake/noresm3/cases -i2 /projects /NS9560K-datalake/noresm3/cases
- For comparing new CLM simulation with old CLM (NorESM2 version):
One has to go to the passive mode of diag_run to tweak a little bit by making a change in lnd_template.csh.
./diag_run -m ctsm -c1 <n1850.ne30_tn14.hybrid.20240829> -s1 1 -e1 14 -c2 N1850_f19_tn14_20190621 -s2 1601 -e2 1614 -i1 /projects/NS9560K-datalake/noresm3/cases -i2 /projects/NS9560K/noresm/cases -p
cd /scratch/$USER/diagnostics/noresm/out/CLM_DIAG
sed -i -e 's/^[ ]*setenv[ ]*regrid_2[ ]*1/setenv regrid_2 0/' lnd_template.csh
./lnd_template.csh
Note, for the CMIP6 version of CLM, the diagnostic only works for some simulations with the monthly averaged field stored in files of each individual months. The script does not work for those with 12-monthly files stored in one single file of a year. NCO has difficulty dealing with these name conventions.