These data represent 6 hourly and 12 hourly instantaneous values of selected variables for ENSEMBLES (http://www.ensembles-eu.org). The list of output variables can be found in: http://ensembles.wdc-climate.de/output-variables The model output was prepared for the IPCC Fourth Assessment SRES A1B experiment. The A1B scenario is the part of the A1 family which describes a balance across all energy sources. The experiment has been initialized in year 2000 of the 20C_1 run and continues until year 2100 with anthropogenic forcings (CO2, CH4, N2O, CFCs, O3 and sulfate) according to A1B. These datasets are available in netCDF format. The dataset names are composed of - centre/model acronym (e.g. MPEH5: Max-Planck-Institute/Echam5) - scenario acronym (e.g. SRA1B: SRES A1B) - run number (e.g. 1: run 1) - time interval (MM:monthly mean, DM:daily mean, DC:diurnal cycle, 6H:6 hourly, 12h:12hourly) - variable acronym [with level value] (e.g. hur850: relative humidity, 850 hPa) --> example: MPEH5_SRA1B_1_MM_hur850 For this experiment 1 ensemble run was carried out. Technical data to this experiment: BCM2.0, (2005): atmosphere : ARPEGE V3 T63L31 (cy 22b+) ocean : NERSC-MICOM V1.0 (based on MICOM V2.8), 35 vertical layers, 1.5(E-W) X 0.5(N-S) deg. res. near equator with gradual transformation to square grid cells away from equator sea ice : NERSC Sea Ice Model (Viscous-plastic + thermodynamic), 4 gridcells per ocean grid cell land : ISBA ARPEGE V3 version The output from the model run: tre.ii.uib.no:/net/bcmhsm/nilsg/BCM