WGCM19 Report from the French groups

IPSL plans for CMIP6

IPSL-CM ESM structure (same as in CMIP5) chemistry & aerosols INCA / REPROBUS Land and vegetation ORCHIDEE Atmospheric physics LMDZ coupler OASIS Oceanic physics OPA NEMO biogeochmistry PISCES Sea Ice LIM

IPSL Models for CMIP6 IPSL-CM6 ESM AOGCM: Two resolutions: LR : Atm: 2.5x1.5° (144x144) L79 Oce: 1° L75 MR : Atm: 1.3x0.6° (280x280) L79 Oce: 0.25° L75 Configurations standard: physical + carbon cycle + prescribed aerosol and ozone standard with interactive aerosol Atmosphere only: High resolution HR : Atm with new dynamical core DYNAMICO 0.5° IPSL-CM5A-AerChem Continuity with IPSL-CM5A used in CMIP5 Interactive chemistry and aerosols VLR : Atm: 3.75x1.9° (96x95) L39 Oce: 2° L31

Configuration and hierarchy of IPSL Models IPSL-CM6 ESM Configurations: standard: physical + carbon cycle + prescribed aerosol and ozone standard with interactive aerosol  High interest in: Consistency between past-present-future “Realistic” versus idealized experiments and configurations (including aquaplanet) Stand-alone model vs coupled model IPSL-CM5A-AerChem Dedicated model version for complex, interactive chemistry and aerosol: robust and stable physics, low resolution

IPSL planed contribution to CMIP6 Short name Long name of MIP IPSL-CM6 AerChemMIP Aerosols and Chemistry Model Intercomparison Project definitely C4MIP Coupled Climate Carbon Cycle Model Intercomparison Project CFMIP Cloud Feedback Model Intercomparison Project DAMIP Detection and Attribution Model Intercomparison Project maybe DCPP Decadal Climate Prediction Project FAFMIP Flux-Anomaly-Forced Model Intercomparison Project GeoMIP Geoengineering Model Intercomparison Project GMMIP Global Monsoons Model Intercomparison Project HighResMIP High Resolution Model Intercomparison Project ISMIP6 Ice Sheet Model Intercomparison Project for CMIP6 LS3MIP Land Surface, Snow and Soil Moisture LUMIP Land-Use Model Intercomparison Project OMIP Ocean Model Intercomparison Project PMIP Palaeoclimate Modelling Intercomparison Project RFMIP Radiative Forcing Model Intercomparison Project ScenarioMIP Scenario Model Intercomparison Project VolMIP Volcanic Forcings Model Intercomparison Project DynVar Dynamics and Variability of the Stratosphere-Troposphere System SIMIP Sea-Ice Model Intercomparison Project

Regional Climate Planed schedule Interest in stretched or zoomed grid Planed schedule Mid 2016: Start simulations with IPSL-CM6.1-LR and IPSL-CM5A-AerChem End 2016 Start publication of results 2017 Simulations with IPSL-CM6.1-LR and start with IPSL-CM6.1-MR 2018: IPSL-CM6-HR and possible second version IPSL-CM6.2-LR

CMIP6: Feedback from CNRM-CERFACS D. Salas y Mélia, H. Douville, M. Michou, A. Ribes, D. Saint-Martin, R. Séférian1 L. Terray and C. Cassou2 1 CNRM-GAME, Toulouse, France 2 CERFACS, Toulouse, France

Introduction: CNRM-CM5 (CMIP5) CNRM-CM5 : ARPEGE-Climat v5 (diag. physics) TL127L31 + NEMO3.2 ORCA1L42 + SURFEX + TRIP1° (Voldoire et al., Clim. Dyn, 2013) Meteo-France’s operational seasonal prediction based on CNRM-CM5 Contribution to CMIP5 : ~9000 years for CMIP5 (centennial, CNRM), 4000 years (decadal, CERFACS) Participated to CFMIP, PMIP, D&A large ensemble (30 historical exps) Derived versions : CNRM-ESM1 : CNRM-CM5 + carbon cycle CNRM-CCM : CNRM-CM5 including stratospheric + tropospheric chemistry (60 vertical levels in the atmosphere) CNRM-CM with interactive Greenland ice-sheet

Plans for CNRM-CM6 CNRM-CM6 AOGCM: low resolution (LR) : TL127L91 + NEMO3.6 ORCA1L75 + SURFEX + TRIP0.5°  for D&A, ScenarioMIP… ARPEGE-Climat v6 (prognostic physics) high resolution (HR): Atm: TL359L91 / Oce: ORCA025L75 for HighResMIP… 2015: CNRM-CM6-LR available by late 2015 (preliminary version performing already better than CNRM-CM5 already available, a bit more tuning is still needed to improve the model further) 2016: - CNRM-ESM LR available by mid 2016 - CNRM-CM6 HR + CNRM-ESM2 HR available by late 2016 DECK + CMIP6 Historical Simulation (CNRM-CM6-LR + CNRM-ESM2-LR) by late 2016 AMIP simulations, OMIP, Land-Only simulations, DAMIP (LR) 2017-2018: MIPs (all except PDRMIP, SolarMIP, VolMIP)

Plans for regional climate modelling Based on Aladin-Climat model CORDEX actually managed outside CMIP

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