Changes between Version 174 and Version 175 of DevelopmentActivities/ORCHIDEE-DOFOCO

Timestamp:

2018-11-29T09:15:31+01:00 (5 years ago)

Author:

luyssaert

Comment:

--

DevelopmentActivities/ORCHIDEE-DOFOCO

@@ -159 +159 @@
 === Anthropogenic species change ===
 Following a disturbance (which could be a clear cut), tree species changes and forest management change can be prescribed or read from a map in ORCHIDEE-CAN. Set '''lchange_species''' = y, '''read_species_change_map''' = y, and '''read_desired_fm_map''' = y and specify the paths of those maps in the COMP/stomate.card. This functionality replaces the DGVM in areas where humans rather than nature govern species distribution, for example, Europe. Note that there are some constraints on the possible species changes. If the forest is unmanaged (fm=1), the code assumes that nature will determine the species rather than humans. Anthropogenic species change has not been developed to work together with land cover change. For the moment it is one or the other.  
-  
+
+=== Bare soil (in progress) ===
+Total bare soil is still calculated as a function of veget. Fraction of bare soil in the mesh (bio+nobio). Given the new albedo scheme we should no longer do this. What happens in a PFT stays in a PFT. We should not move the gaps between the canopy to the bare soil. We no longer want to treat the gaps in the canopy as bare soil. It needs to be tested what will happen with the evaporation in the single-layer model. The multi-layer energy budget should be able to correctly deal with the gaps in the canopy. '''ok_bare_soil_new'''
 
 === C13 ===
@@ -227 +229 @@
 
 
-=== Litter decomposition ===
+=== Litter decomposition (needs editing) ===
 After large-scale dieback events (with a closed n-cycle, i.e., impose_cn = n), so much soil mineral N becomes immobilized to decompose litter that too little N is left for plant regrowth. To address this, we implicitly represent the action of fungivores, which eat the decomposing fungi and release N for the plants and increase N turnover rates. We set aside a fraction of qd (stomate_litter.f90) which becomes available for plant uptake in nitrogen_dynamics. This fraction is prescribed by '''fungivores'''  and is allocated to '''n_fungivores''' which represents the nitrogen that is released by the fungivores and that is moved into the variable plant_uptake.  This parameter is not very well constrained and has been calibrated to find a good compromise between plant regrowth and litter decomposition. The share of the n contained in the decomposing fungi that is released as an excrement from the fungivores should be between 0 and 1 and is set in the run.def:
 {{{
@@ -380 +382 @@
 The initial values of carbon for the four SOM pools are used globally. Sensitivity test have shown that the analytic spin-up is not sensitive to the actual size of the initial values. The different system will after a while settle in to there own state (N limited or saturated) in spite of having the same initial state. 
 
-
+=== Start and restart (in pgrogress) ===
+|| '''Sechiba''' || || || || '''stomate''' || ||
+|| '''Restart''' || '''impveg''' || '''impsoil''' || '''laimap''' || '''ok_stomate''' || '''restart''' || '''Comment''' ||
+ 
 === Stomate ===
 ORCHIDEE-CN-CAN strengthen the links between sechiba and stomate. As in previous versions, stomate makes use of variables calculated in sechiba but in ORCHIDEE-CAN and ORCHIDEE-CN-CAN, sechiba requires information from stomate to work properly. For the moment set '''stomate_ok_stomate''' to y (_AUTOBLOCKER_). For the future it seems possible to prescribe LAI and assume a canopy structure but this code still needs to be restored and tested. For the time being set '''lai_map''' = n.