The climate of 6000 years BP in near-equilibrium simulations with a coupled AOGCM

The response of a coupled atmosphere-ocean general circulation model and an uncoupled atmosphere general circulation model to boundary conditions for 6000 years ago has been studied. The set of quasi-equilibrium simulations e nables a separation of the contributions from changes in the ocean circulat ion, the CO2 concentration, and the insolation to the total response. The r esults indicate that all three factors have considerable impact on the clim ate change signal and here especially on the northern African and Indian mo nsoon. Multi-century adjustment processes associated with the inertia of th e deep ocean play only a minor role for the climate change signal of the up per ocean and the atmosphere.