80 years CMIP2 1% per year compound CO2 increase experiment starting from present-day climate state. BCM1.0 (2002): atmosphere: ARPEGE V3 T63L31 (cycle 22); ocean: NERSC-MICOM (based on MICOM V2.8), 24 vertical layers, 2.4(E-W) X 0.8(N-S) deg. res. near equator with gradual transformation to square grid cells away from equator (MNP2 grid); sea-ice: NERSC Sea Ice Model (Viscous-plastic + thermodynamic); land: ISBA ARPEGE V3 version; coupler: OASIS2.2, correction of atmosphere-ocean heat and freshwater fluxes.