Simulation period: 7 ka BP to 4,5 ka BP (Middle Holocence). The OE2-experiment is carried out using variable orbital (Berger and Loutre 1991), solar and greenhouse gas forcing. The solar forcing was estimated by scaling production estimates of delta 14C (cf. Solanki et al. (2004)) such that the difference between present-day and Maunder Minimum solar activity is 0.3 % (Crowley 2000). Initial conditions: The simulation have been initialised at the end of a 500 year spin-down control (quasi-equilibrium) run with constant (orbital, solar and greenhouse gas) forcing for 7 ka BP. Experiment with variable orbital forcing only is also available. Datasets with monthly average values are also available. Technical data to this experiment: The experiment is using ECHO-G: ECHAM4 (f90) + HOPE-G and was run on a NEC-SX (hurrikan).