Opened 7 years ago

Closed 7 years ago

#181 closed task (fixed)

Add average temperature threshold for C4 grass in pheno_moigdd

Reported by: jgipsl Owned by: jgipsl
Priority: major Milestone: IPSLCM6.v1
Component: Physical processes Version:
Keywords: Cc:


Work done by Dan Zhu:

According to the paper:
Still et al., Global distribution of C3 and C4 vegetation: Carbon cycle implications, 2003, Global Biogeochemmical Cycles, DOI: 10.1029/2001GB001807

an average temperature threshold at 22deg Celsius has been added for the C4 grass in pheno_moigdd. This has been done in the MICT version of ORCHIDEE by Dan Zhu. She implemented a new subroutine called pheno_moi_C4 which is similar to pheno_moigdd. This subroutine is called for C4 grass.

Note: this enhancement is important for the DGVM.

Merge in trunk: (NViovy, JG)

In the trunk we prefer to keep pheno_moigdd and add a constraint using a new variable pheno_moigdd_t_crit depending on the pft. As default, this variable is set to undef for all pft except C4 grass where it is set to 22.0 deg. When the variable is set to undef, the new constraint is not active.

Commit in the trunk to come...

Change History (1)

comment:1 Changed 7 years ago by jgipsl

  • Resolution set to fixed
  • Status changed from new to closed

Done in rev [2665]

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