Are there SSP scenarios that can be run with a small number of PFTs types now?

[CGL]

Hi,all!

my CESM version is 2.1.3.I wonder if CESM can have SSP scenarios that can be run with few landuse PFTs?

The current SSP scenarios have a lot of land use categories set up, with 78 for CROP. Are there any SSP scenarios that can be run where the land types are not as detailed? (For example, Crop is classified into 10 species and vegetation into 5 types or something like that) Please note that I would like to run a fully coupled CESM.

Thanks :)

 

[slevis]

No. I can think of two options:
- More difficult: You generate your own custom fsurdat/landuse files to fulfill your specifications.
- Less difficult: Use some namelist options that may help you. For example:

n_dom_pfts
n_dom_landunits
collapse_urban
toosmall_soil
toosmall_crop
toosmall_glacier
toosmall_lake
toosmall_wetland

 

[CGL]

If I use land use data that I produce myself, then this land use data has to be consistent with the CLM input data? I am referring to the land class.

 

[slevis]

Yes, it has to be like CLM's default landuse files, except you would change the pft areas according to your custom data.

It would require a code rewrite if you rewrote CLM's list of pfts.