Changes between Version 121 and Version 122 of DevelopmentActivities/ORCHIDEE-DOFOCO

Timestamp:

2017-06-20T14:00:04+02:00 (7 years ago)

Author:

luyssaert

Comment:

--

DevelopmentActivities/ORCHIDEE-DOFOCO

@@ -43 +43 @@
 
 The number of age classes is defined by the parameter '''NAGEC'''. Setting this parameter to 1 is a good start unless you have a special interest in using age classes. When NAGEC is set to more than 1, '''PFT_TO_MTC'''', '''AGEC_GROUP''' and '''PFT_NAME''' will all need to be carefully defined. See the attached run.def for a functional example. See below for some principles:
-NAGEC = 2
-Assume we want to use two age classes in the tropical evergreen forest (default PFT 2). We will end-up with 14 PFTs, the 13 default PFTs and the 14the which is used as an age class for tropical evergreen forest
-PFT_TO_MTC_01 = 1
-PFT_TO_MTC_02 = 2
-PFT_TO_MTC_03 = 2
-PFT_TO_MTC_04 = 3
-PFT_TO_MTC_05 = 4
+NAGEC = 4
+Assume we want to use four age classes for all forests. We will end-up with 37 PFTs, the 1 for bare soil, C3 grass, C4 grass, C3 crop and C4 crop and 4 times 8 for the 8 forest PFTs. Thus NVM = 37
+
+Because we still use the 13 default MTC we can use the default maps. Let the model know how many MTCs it should find on the maps:
+NVMAP=13
+
+If you want to use IMPOSE_VEG=y then only vegetation should be added to the youngest age class. ORCHIDEE will update the vegetation fractions during the simulations
+SECHIBA_VEG__01=0.0769230769231
+SECHIBA_VEG__02=0.0769230769231
+SECHIBA_VEG__03=0.0
+SECHIBA_VEG__04=0.0
+SECHIBA_VEG__05=0.0
 ...
 
-Now we need to inform ORCHIDEE that PFT 2 and PFT 3 are age classes from each other
-AGEC_GROUP_01 = 1
-AGEC_GROUP_02 = 2
-AGEC_GROUP_03 = 2
-AGEC_GROUP_04 = 3
+SECHIBA_VEGMAX__01=0.0769230769231
+SECHIBA_VEGMAX__02=0.0769230769231
+SECHIBA_VEGMAX__03=0.0
+SECHIBA_VEGMAX__04=0.0
+SECHIBA_VEGMAX__05=0.0
+...
+
+Link PFTs to MTCs 
+PFT_TO_MTC__01=1
+PFT_TO_MTC__02=2
+PFT_TO_MTC__03=2
+PFT_TO_MTC__04=2
+PFT_TO_MTC__05=2
+...
+
+Tell ORCHIDEE which PFTs have a successional relationship
+AGEC_GROUP__01=1
+AGEC_GROUP__02=2
+AGEC_GROUP__03=2
+AGEC_GROUP__04=2
+AGEC_GROUP__05=2
+...
+
+Give all PFTs a name for clarity
+PFT_NAME__01=SoilBare
+PFT_NAME__02=BroadLeavedEvergreenTropical_age01
+PFT_NAME__03=BroadLeavedEvergreenTropical_age02
+PFT_NAME__04=BroadLeavedEvergreenTropical_age03
+PFT_NAME__05=BroadLeavedEvergreenTropical_age04
+...