Changes between Version 17 and Version 18 of Documentation/TrunkFunctionality4

Timestamp:

2020-03-09T14:30:03+01:00 (4 years ago)

Author:

luyssaert

Comment:

--

Documentation/TrunkFunctionality4

@@ -197 +197 @@
 In terms of grassland phenology ORCHIDEE trunk 4 follows ORCHIDEE 3.0 as closely as possible. For the moment ORCHIDEE trunk 4 is also using Nicolas's patch that enforces senescence if too many of the leaves are in the oldest leaf age class.  This patch is controlled by the LNVGRASSPATCH flag, and is set to T in the standard run.def.
 
-Part of the turnover goes into the harvest pool (was that parameter extermalized?) -> simplified use of grasslands. Harvest goes into harvest_pool (just like wood) and its decomposition is accounted for in the fluxes from the product use pool.
+Part of the turnover goes into the harvest pool (harvest_fraction is now hard coded to 0.5 in stomate_turnover.f90 - see ticket #687). This simple parameter should be replaced by a grassland management module but for the moment 50% of the turnover goes into the harvest_pool (just like wood) and its decomposition is accounted for in the fluxes from the product use pool.
 
 
@@ -210 +210 @@
 
 The functionality to simply prescribe an lai value (either through impose or by reading a map) will need to be replaced by functionality that prescribes or reads the biomass, leaf age, and number of individuals. Given that the current lai map is based on a previous ORCHIDEE run, the same approach could be used to generate a spatially explicit canopy map that contains biomass, individuals and leaf age distribution. Nevertheless, reading an observed lai, i.e., from MODIS, and using it to force ORCHIDEE trunk 4 would require a substantial number of assumptions to turn an aggregated 1D lai value into a disaggregated 3D canopy at the PFT level.
+
 
 === Land cover change (with age classes) (CHECK) ===