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GENERAL NEWS
General information for all users about recent changes linked to the ORCHIDEE code and environment as well as the project. In between the news summarized here below, follow also weekly meeting reports and main changes done on the trunk.
- Next ORCHIDEE-DEV meeting the 8 March: meeting on the Fair use policy
News February 2016
Main changes in the trunk since July 2015
- Change of Bare soil albedo calculation: a new formulation based on MODIS derived background albedo can be used with the keyword ALB_BG_MODIS, see ticket #227, r3171
- Implemented use of XIOS 2.0 as option, see ticket #202, r3096
- Implicit coupling of "soil-snow-atmosphere", see ticket #203, r3059 => NOTE: a BUG was introduced for the use of explicit snow scheme
- humcste initialized depending on soil depth, see ticket #183, r3041
- Added fractions for snow cover, see ticket #203, r3020
- Bug correction in water conservation, see ticket #188, r2927
- Soil thermal properties, see ticket #194, r2922
- New vertical soil discretization, see ticket #190, r2917
- Corrections for restartability 1day+1day=2days. This is now ok in all tested cases, see ticket #143, r2868
New model features to come soon in the trunk
- Nitrogen cycle has been completed in a branch and is currently under validation
- BVOC : Emission fluxes for BVOCs and NOx, vegetation fraction, see ticket #230
Reported problems in the current trunk
- A bug for the new snow scheme was introduced in revision [3059]. The snow does not melt properly, see ticket #229
- Soil hydric stress with the 11-layer model: bug in the trunk; corrected by Nicolas Vuichard in a specific version (see ticket #228); will be comitted to the trunk soon.
Reference simulations done with the trunk
The latest reference simulations done with the trunk are using revision 3171 and 3109. See here : wiki:ReferenceSimulations
XIOS is now the default
XIOS 1.0 is now replacing IOIPSL for writing of output files (history files). This is the case in the trunk and the libIGCM configurations (ORCHIDEE_trunk, LMDZOR_v6).
- If you need to install the trunk without XIOS, read more here : wiki:Documentation/UserGuide/DeactivateXIOS
- Add variables using XIOS, read here wiki:Documentation/UserGuide/XIOSaddVar
- XIOS is compiling by default at curie, ada, obelix and ciclad. At ciclad only a small modification is needed, read more in igmcg_doc. At other machines, read here about installation : https://forge.ipsl.jussieu.fr/ioserver
- The use of XIOS 2.O is implemented as an option in the trunk using the same features as XIOS1 (only writing output files). In a near future, XIOS2 will be used also to read and interpolate files, and to read and write restart files instead of IOIPSL.
