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

Documentation

See the summary under the Documentation page 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