Why the root respiration doesn't include the live coarse respiration in src/biogeochem/CNVegCarbonFluxType.F90

[Xueli Huo]

Hi,

I am checking the respiration code in src/biogeochem/CNVegCarbonFluxType.F90

For the soil respiration starting at line 4547 in CNVegCarbonFluxType.F90

this%sr_col(c) = &
this%rr_col(c) + &
soilbiogeochem_hr_col(c)

where the root respiration is coded starting at line 4197:

this%rr_patch(p) = &
this%froot_mr_patch(p) + &
this%cpool_froot_gr_patch(p) + &
this%cpool_livecroot_gr_patch(p) + &
this%cpool_deadcroot_gr_patch(p) + &
this%transfer_froot_gr_patch(p) + &
this%transfer_livecroot_gr_patch(p) + &
this%transfer_deadcroot_gr_patch(p) + &
this%cpool_froot_storage_gr_patch(p) + &
this%cpool_livecroot_storage_gr_patch(p) + &
this%cpool_deadcroot_storage_gr_patch(p)

Why the live coarse root respiration livecroot_mr_patch(p) is not included in the calculation of root respiration above? Am I missing something ?
I am using the version with the tag as PPE.n01_ctsm5.1.dev012.

Sincerely,

 

[oleson]

I've asked around a bit and we're not sure why live coarse root respiration is not included.
Would you mind filing an issue on this:

Issues · ESCOMP/CTSM

Community Terrestrial Systems Model (includes the Community Land Model of CESM) - Issues · ESCOMP/CTSM

github.com

and we'll see if we can tap any knowledge about this from the rest of the community.

 

[Xueli Huo]

Okay. Thanks for the suggestion. I filled an issue#1676 there, and hope someone could answer it.

 

[oleson]

Closing the loop here, this appears to be a bug, live coarse root respiration should be included. Thanks for finding this. A fix will be included in an upcoming tag.