Params_file

[Evgeny_Chur]

Dear All,

I'm using the latest version of CESM with CLMv5.0, also the model automatically uses the ./lnd/clm2/paramdata/clm50_params.c211112.nc file. I got input data, from B simulation prepared another person using CESM 2.1.2 with ./lnd/clm2/paramdata/clm5_params.c171117.nc. I want to use these B data as a source of atmospheric forcing for my simulation.

When I use the clm50_params.c211112.nc file with input data everything works fine, but if I change the version of param file to clm5_params.c171117.nc, I got error in reading in pft dataERROR in pftconMod.F90

My question: Is it possible to use the clm5_params.c171117.nc file with the latest version of CESM or if I want to use this input file, I should use the CESM2.1.2 version?

Why the problem in atm.log happened when the model reads the topodata_0.9x1.25_USGS_070110_stream_c151201.nc file? Can I change this topo file to another topo file and solve this problem?

Best regards,
Evgenii

 

[slevis]

If I understood correctly, you already showed that you cannot use the older params file with the latest CESM. To run the latest CESM with the old parameter values, try making a third params file as follows:
- make a copy of the 211112 file
- in this copy, overwrite parameter values (not parameter names) with the values from the 171117 file
- in this copy, do not add parameters that seem missing or remove parameters missing in the old file; the new file contains the list of parameters needed by the latest CESM
- run with this params file; I think it should work

 

[Evgeny_Chur]

If I understood correctly, you already showed that you cannot use the older params file with the latest CESM. To run the latest CESM with the old parameter values, try making a third params file as follows:
- make a copy of the 211112 file
- in this copy, overwrite parameter values (not parameter names) with the values from the 171117 file
- in this copy, do not add parameters that seem missing or remove parameters missing in the old file; the new file contains the list of parameters needed by the latest CESM
- run with this params file; I think it should work

Dear Sam,

Thank you for your answer. No, I didn't use the old params file. Previously, I had problems with other things. I will try to fix and run the model again.

Best regards,
Evgenii

 

[xiaoxiaokuishu]

Dear Sam,

Thank you for your answer. No, I didn't use the old params file. Previously, I had problems with other things. I will try to fix and run the model again.

Best regards,
Evgenii

Hi, Evgeny_Chur

I also meet the same probles, the clm_paramter is modified by me, do you know what is the
problem.

Best
Ru