= ORCHIDEE Retreat near Saint Remy les Chevreuse 19/20 Jan 2012 =

== Documentation ==
See the summary under the Documentation page [wiki:OrchideeDocumentation Documentation Retreat]

== Brainstorming session ==

The brainstorming session last from 18H to 20H on thursday.
We started with 4 short presentations describing the VISION of 4 researchers for ORCHIDEE and the possible evolution of the code for the next 3 to 5 years. The Presentations are linked below with a summary of the main points raised.

==== Nathalie Denoblet (presentation) ====
 * Presentation of the history of ORCHIDEE developments and the current imbalance in the level of complexity between the hydrology and the carbon cycle.
 * Emphasize on the need to harmonize the level of complexity and reinforce the evaluation strategy including evaluation of the coupled mode.
 * Need to brainstorm on the potential use of the model for impact studies
 * Reinforce the developments on agro-systems

==== Philippe Ciais (presentation) ====
 * Need to consolidate past developments and to work on the consistency between these developments
 * Raised out attention on the possible use of ORCHIDEE by industrial/private compagny; Intellectual property need to be clarified 
 * Resolution: Why not going to a reference very high resolution (1 km) simulation
 * Automatisation: Potential of Near Real Time applications (within GMES) and maybe to "promote" ORCHIDEE for a use within ECMWF
 * Frontier developments: Inclusion of the Phosphorus cycle, soil as a biota, complete integration of past disturbances, export of DOC and DIC, pedogenesis (soil alteration), Isotopes,...

==== Agnes Ducharne (presentation) ====
 * Focussed her vision on the hydrology
 * Need to adress carefully lateral flows when going to high spatial resolution
 * Do not forget the spatial variations of soil properties!
 * Need to Include a link with ground water over areas with shallow water table 

==== Sebastiaan Luyssaert (presentation) ====
 * We may need to move from climate science focuss (central in the past activities) to descision making strategy (including some integrated quantities like wood production or food supply,...)
 * Land Manadgement becomes crucial
 * Move from PFTs to species (group of species)
 * Include the rivers as an ecosystem

We then had a fruitfull discussion on the different directions raised by these presentations. The discussion was supported by few additional slides on specific topics from 5 volunteers:
 * Fabienne M. (presentation): she raised the issue of having currently too many branches and the need for more ingeniering power to have a comprehensive main trunc version.
 * Valentin B. (presentation) : Current model version is not easy to use; interests for a version


== Organisational issue: planning of the meetings ==

We had