The data represent monthly avarage values of a simulation of an annual increase of 1%,starting in 1931, until CO2 quadrupling. In the year 2001 the CO2 concentration were held constant. The simulation is a continuation of the 1CO2_2-run and was run on a NEC-SX6 (hurrikan), the output from the model run is stored in : hurrikan.dkrz.de:/ut/k/k204098/EXP000/run017 Datasets with higher resolution (6 hour mean) are also available.
Roeckner, Erich; Lautenschlager, Michael; Schneider, Heiko (2006). IPCC-AR4 MPI-ECHAM5_T63L31 MPI-OM_GR1.5L40 1%/year CO2 increase experiment to quadrupling run no.1: atmosphere monthly mean values MPImet/MaD Germany. World Data Center for Climate (WDCC) at DKRZ. https://doi.org/10.1594/WDCC/EH5-T63L31_OM-GR1.5_CMIP4_1_MM
[1] DOIMarsland, S.J.; Haak, H.; Jungclaus, J.H.; Latif, M.; Röske, F. (2003). The Max-Planck-Institute global ocean/sea ice model with orthogonal curvilinear coordinates. doi:10.1016/S1463-5003(02)00015-X
[2] Roeckner, E.; Baeuml, G.; Bonaventura, L.; Brokopf, R.; Esch, M.; Giorgetta, M.; Hagemann, S.; Kirchner, I.; Kornblueh, L.; Manzini, E.; Rhodin, A.; Schlese, U.; Schulzweida, U.; Tompkins, A. (2003). The atmospheric general circulation model ECHAM 5. PART I: Model description. http://hdl.handle.net/11858/00-001M-0000-0012-0144-5