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W ater isotopes in ORCHIDEE. The isotopic composition of water is affected by phase transitions . . …and therefore is a good tracer for the hydrological cycle . Francesca Guglielmo (LSCE), Camille Risi(LMD), Catherine Ottl é (LSCE). to better understand land surface processes

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w ater isotopes in orchidee

Water isotopes in ORCHIDEE

The isotopiccompositionof water isaffected by phasetransitions.

…and thereforeis a goodtracer for the hydrologicalcycle.

Francesca Guglielmo (LSCE), Camille Risi(LMD), Catherine Ottlé (LSCE)

to betterunderstandlandsurfaceprocesses

to improvethe evaluationof LSMs

Projectionsof future changescould be more reliable

water isotopes in orchidee
Water isotopes in ORCHIDEE

ORCHIDEE-iso(Risi et al., in preparation )

Parallelisation

11 –layershydrology(de Rosnay et al. 2002 )

Permafrost, wetlands(Gouttevin et al. 2011)

LMDZ

Snow model (T. Wang) + other hi latsprocesses

Coupled, global simulations of continentalrecycling.

Evaluation againstriver, soil and stem water measurements.

Offline single-pointruns on instrumentedsites.

Forcing: meteorology and isotopes in water vapor and precipitation.

Evaluation againstsoil and stem water measurements.