In this section we present the simulations performed following the same protocol used in simulations for ORCHIDEE trunk rev 3109.

The protocol consists in tree parts:

  • Spin-up : 340 years spin-up with CRU-NCEP forcing, cycling on 1901-1910. No restart.
  • Transient : Land cover map is changing annually. Forcing is still cycling over 1901-1910. Restart from spin-up simulation simulation.
  • Historical : Historical simulation using CRU-NCEP. Restart from transient simulation.

For further details see the FG1low.CWRR.3109, FG1translow.CWRR.3109, FG2low.CWRR.3109 simulations in

BUGS During the first test, at the historical step, the simulation crashed. A big bug was found related to the allometric rule coding. The problem comes from the NewX function in stomate_growth_fun_all.f90. The function aim is to find the Cs_target which respects the allometric rules, knowing Cl_target, but this function does not work properly. In some cases it does not find any solution for Cs_target and the model crashes. This function is not always called, but only in the cases when the allometric rules are not respected. As a first approximation degree we decide not to call NewX function.

1) reflowCN3238 simulations

The code is modified starting from the branch ORCHIDEE_CN revision 3238. The simulation follows the protocol described above and consists in 3 parts:

  • FG1low.Choi.CN3238.SPINUP.NewX: Spin-up
  • FG1low.Choi.CN3238.TRANS.NewX: Transient
  • FG1low.Choi.CN3238.RUN.NewX: Historical

FG1low.Choi.CN3238.RUN.NewX is compared with the FLUXNET Multi-Tree Ensemble data set and the FG2low.Choi.2724 simulations, that was performed with an ORCHIDEE trunk version similar to that in ORCHIDEE_CN revision 3238 (ORCHIDEE trunk rev. 2740). More information on FLUXNET can be find here:

The results are summarized here:

While the results of the intermonitoring between FG1low.Choi.CN3238.RUN.NewX and FG2low.Choi.2724 are provided here:

Last modified 22 months ago Last modified on 07/11/17 11:53:53