I want to change Vcmax to enhance the simulated value of GPP and NPP, but I dont know where to do with. I decide to find a way in clm5_params.c171117.nc (lnd/clm2/paramdata ) file. I want to know if the field - s_vcad(pft) is my target field to change. Thanks!
How and where to change Vcmax value of photosynthesis?
- Thread starter liyongkang
- Start date
I don't think s_vcad has any effect if LUNA is on (default is on in CLM5), unless it's a C4 plant or a crop. i_vcad is in the same category as s_vcad.
Based on an ongoing global parameter perturbation study we are conducting, you could try leafcn (leaf carbon to nitrogen ratio). The model GPP at least is quite sensitive to changes of +-30% in that parameter.
Based on an ongoing global parameter perturbation study we are conducting, you could try leafcn (leaf carbon to nitrogen ratio). The model GPP at least is quite sensitive to changes of +-30% in that parameter.
Thanks a lot!
Hello everyone,
I checked the parameter file and I believe we can use nco to make certain changes to it?
If i want to change the value of a variable for a particular pft, how can I change it?
I would be grateful for any suggestions.
I checked the parameter file and I believe we can use nco to make certain changes to it?
If i want to change the value of a variable for a particular pft, how can I change it?
I would be grateful for any suggestions.
slevis
Moderator
Guidance for adding/changing params in the params file:
github.com
Moving a parameter to the params file
Community Terrestrial Systems Model (includes the Community Land Model of CESM) - ESCOMP/CTSM
github.com
Thank you very much for your response.