== Reports of technical meeting ORCHIDEE ==

=== 16/09/2010 ===

 * introduction on forge ORCHIDEE wiki : create this page
 * short words from Phillipe on the organization of those meetings
   * every two weeks
   * organized by Martial, supplied by Nicolas Vuichard
   * reports are done during the meeting or just after [[BR]]
     and all participants have to read and perhaps correct the report
 * presentation of work on externalization of parameters (see attached file)
   * definition of readding PFTs versus Meta-Classes : discution of idea of Didier versus Sebastiaan. [[BR]]
     We don't keep idea that definition of PFT are in MTC sets (Sebastiaan) [[BR]]
     But for clearing the def file, Nicolas has proposed that we give number of MTC for each PFT per line. Accepted. 
   * simplification of all parameters in code : regroup all constant modules (MTC parameters) in src_parameters and stomate_constants (all participant are agreed ). [[BR]] 
     Discussion on initialization functions [[BR]]
     We have to talk to all ORCHIDEE developpers before this fusion. Two steps[[BR]]
     1. put all STOMATE constant in src_parameter
     1. fusion if needed all constant files.
     Some SAVE values are not parameters and lot of MTC array are SAVE and will be PARAMETER.
   * Possible flags related to the externalization [[BR]]
     1. flag CONFIG_AR5 in order to get back to the AR5 config (13 PFT with default values for all PFT parametes) [[BR]]
     This corresponds to only define nvm=13 and pft_to_mtc = 1 2 3 4 5 6 7 8 9 10 11 12 13  [[BR]]
     We wont' implement the CONFIG_AR5 flag[[BR]]
     1. flag IMPOSE_PARAM : a user has developed a orchidee.def with for instance 16 PFT and has modified some parameter values [[BR]]
     In order to be able to use this .def file but for a run with default values (eg without removing the lines in the .def that redefined the parameter values)[[BR]]
     we set IMPOSE_PARAM to FALSE else we set it to TRUE.
   * All vegetation maps for variable number of PFTs will be land use like maps (result of pre-process in the right number of types). 
 * Spacialization of variables : Didier has asked for a list of spatialization parameters to begin change in the code. [[BR]]
   We decide to begin the work with vcmax_opt. Nicolas Viovy has proposed to build a map by PFTs.[[BR]]
 * Next technical meeting : '''30th September 2010 2pm''' [[BR]]
   Suggested topics (to be confirmed) : 
   1. interpolation of 6-hourly climatology
   1. bug reported by Tea/Pierre on water stress