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Status of the CERFACS Coupled Model for WP4

Status of the CERFACS Coupled Model for WP4. Ch. Cassou, E. Maisonnave (CERFACS) P. Marquet (CNRM). Dynamite Meeting Bucharest 2006. LIM (Louvain Ice Model). Same grid as ORCA. NEMO [OPA.9-ORCA] (LOCEAN). 2 o x2 o on average+ 3 poles (South, Siberia, Canadian Northern Territories)

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Status of the CERFACS Coupled Model for WP4

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  1. Status of the CERFACS Coupled Model for WP4 Ch. Cassou, E. Maisonnave (CERFACS) P. Marquet (CNRM) Dynamite Meeting Bucharest 2006

  2. LIM (Louvain Ice Model) Same grid as ORCA NEMO [OPA.9-ORCA] (LOCEAN) 2ox2o on average+ 3 poles (South, Siberia, Canadian Northern Territories) Increased resolution along the equator And in the Med. Sea. Status of the CERFACS coupled model for WP4 1. Model components TRIP [Total Runoff Integrating Pathway] (Univ. of Tokyo) (~1ox1olon) ARPEGE-IFS: V4.5 (Meteo-France, ECMWF) DYN1 Dynamics : T63 (~1.8ox1.8olon) Physics: Reduced linear T42 (~2.8ox2.8olon) VIMA OASIS3 (Cerfacs) 10yr with restoring followed by 50yr of integration

  3. The model DOES have a promising ENSO Nino3 index Status of the CERFACS coupled model for WP4 2. Promising start The model has a great NAO and nice variability modes in the North Atlantic DYN1 VIMA EOF for Winter MSLP DYN2

  4. Difference between Model mean CRF and observed CRF Too shallow oceanic Mixed layer: Reformulation of TKE in NEMO JJA Status of the CERFACS coupled model for WP4 3. But… it has some biases Difference between Model mean state and observed SST DYN1 DJF VIMA DYN2

  5. Status of the CERFACS coupled model for WP4 4. Model performance for SH ice 50% observed ice cover limit Model Ice concentration DYN1 VIMA JAS JFM Ice volume

  6. Status of the CERFACS coupled model for WP4 5. Model performance for NH ice Ice concentration JFM JAS Ice volume

  7. Diff between model and observed (ERBE) Annual Radiative Budget @TOA 3D Global Ocean Temperature Annual Radiative Budget @TOA + 3 W/m2 Status of the CERFACS coupled model for WP4 6. Drifts Global SST

  8. Status of the CERFACS coupled model for WP4 7. Conclusions A promising start but… … we have to find a physical way to balance the model energy before long integrations…

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