1. EC-Earth = ECMWF S4 NEMO3.6 LIM3 TM5 LPJ-Guess PISCES (test phase) COSP 2014: ESM technically running Early 2015: consolidation, portability Mid 2015: tuning

2. A European Consortium for Earth System Modeling 29 partner institutes 8 core partners KNMI, AEMET, DMI, Met Éireann, FMI, IPMA, CNR-DTA, SMHI Work groups Technical Tuning Atmospheric Composition and Land Ocean Millennium scale studies CMIP6 ec-earth.org The Main objective is “to develop and apply an Earth System Model based on ECMWFs seasonal forecasting system for providing trustworthy climate information to climate services and to advance scientific knowledge on the Earth system, its variability, predictability and long-term changes resulting from external forcing”.

3. GCM Global Climate Model Coupling OASIS- MCT Atmosphere and Surface IFS and H-Tessel Sea ice LIM3 Ocean NEMO River runoff

4. ESM Earth System Model Coupling OASIS- MCT Atmosphere and Surface IFS and H-Tessel Dynamic vegetation LPJ-GUESS Atmosphere chemistry TM5 Sea ice LIM3 Ocean NEMO Ocean bio-geo-chem PISCES River runoff Challenges: maintenance of limited configurations Std, high res GCM, low res ESM, CO2 only ESM, full ESM towards OpenIFS tuning

5. Development portal for distributed model development External homepage ec-earth.org

6. Annual mean sea ice concentrationin EC-Earth 3.1 (with NEMO3.3.1/LIM3) Development towards version 3.2 Tuning of 3.1 – advection mass fixer, albedo,... New versions of – Atmospheric chemistry (TM5) – Dynamic vegetation (LPJ-GUESS) – Ocean bio-geo-chemistry (PISCES) – Ocean/sea ice model NEMO3.6/LIM3 – Some changes to convection Indirect aerosol effects Technical improvements – new coupler (OASIS-MCT) Tuning of 3.2 GCM – about to start (but delayed) – principal discussion: include trend as metric or not?

7. Tuning (Davini and von Hardenberg, 2014, CNR-ISAC)

8. Coming challenge: CMIP6 Climate Model Intercomparison Project 6 CMIP6 underlying questions  How does the Earth system respond to forcing?  What are the origins and consequences of systematic model biases?  How can we assess future climate changes given climate variability, climate predictability, and uncertainties in scenarios?

9. CMIP6 DECK Shuting Yang AerChemMIP Twan van Noije, ‎ Hannele Korhonen C4MIP Paul Miller CFMIP Frank Selten DCPP Francisco Doblas-Reyes GeoMIP Shuting Yang HighResMIP Rein Haarsma (co-lead MIP) ISMIP6 Shuting Yang LS3MIP Andrea Alessandri LUMIP Paul Miller, Almut Arneth OCMIP6 PMIP Qiong Zhang RFMIP Frank Selten ScenarioMIP Shuting Yang, Ralf Döscher VolMIP Qiong Zhang CORDEX Shuting Yang CMIP6 participation blue = high priority

10. Roadmap Technically running GCM Consolidation  I/O, movability, speed, clarity of the code, documentation,... GCM tuning ESM technically running ESM tuning

11. Further development of the consortium Enabling the WG to do focused efforts, linking partner commitments to WG tasks An updated legal framework Shaping the future collaboration with ECMWF EC-Earth and climate services Long-term: an updated science agenda

12. DECK-simulations GCM-only: all runs will be possible (distributed effort) Full ESM/passive carbon: depending on timing of exp, and stability of model Interactive carbon cycle: ocean biogeochem not fully resolved Comment: option a (only DECK mandatory), but with some ScenarioMIP elements promoted to DECK

13. EC-Earth interest in MIPs Systematic errors – HiRESMIP (dep. on H2020 PRIMAVERA) – OCMIP Forcing – AerchemMIP (dep. on H2020 CRESCENDO) – LUMIP – CFMIP & RFMIP (dep. on H2020 IMPULSE) – LS3MIP (dep. on Marie Curie fellowship) – PMIP Scenario – ScenarioMIP – S2DMIP

14. Infrastructure and resources Technical working group and CMIP6 coordination in place Multi-group effort Efficient CMOR-izing has priority