Request C3 and C4 distribution dataset

[yan Chen]

Describe your problem or question: Dear NCAR scientists,
I am using output from the historical run of CMIP6 (variant_label = 'r1i1p1f1') to analyze photosynthesis. In CLM, plants use C3 and C4 pathways for photosynthesis. I think the input data from CLM should include C3 and C4 plant distribution. I am wondering how I can access this dataset.

 

[slevis]

You need the "fsurdat" file, also known as the simulation's "surface dataset" to view the distribution of C4 grasses versus all other plant functional types. I am not familiar with the organization of the CMIP6 data to say where you should look for that...

 

[slevis]

@asphilli or @strandwg would you know?

 

[oleson]

Looking at the CMIP6 data tables, I *think* we reported "c3PftFrac" and "c4PftFrac". Are those variables available? If not, let us know.

 

[strandwg]

The fsurdat file used for the CMIP6 historical runs is

surfdata_0.9x1.25_78pfts_CMIP6_simyr1850_c170824.nc