This run (run3, experiment ID a44) is one member of a five-member ensemble simulation (run1 to run5) of the IPCC AR4 "climate of the 20th Century experiment (20C3M)" with the coupled climate model ECHO-G. Initial data for the 20C3M simulations (experiment ID = a42-a46; period = 1860-2000) were obtained by spinning up ECHO-G for six years with ocean restart files from simulation years=199/299/399 of a preindustrial simulation performed at the Freie Universitaet Berlin (FUB) and from simulation years=199/299 of the first ensemble member respectively. The preindustrial runs were initialized with the Levitus climatology. Anthropogenic GHGs (ENSEMBLE peoject), sulfate aerosol direct and first indirect effects, and natural forcing (solar irradiance and volcanic activity implemented through varying solar constant following Crowley, 2000) are used for the 20C3M simulations. This member was run on a NEC SX-6 machine at DKRZ.
[1] DOIMin, Seung-Ki; Legutke, Stephanie; Hense, Andreas; Kwon, Won-Tae. (2005). Internal variability in a 1000-yr control simulation with the coupled climate model ECHO-G — I. Near-surface temperature, precipitation and mean sea level pressure. doi:10.3402/tellusa.v57i4.14712
[2] DOIMin, Seung-Ki; Legutke, Stephanie; Hense, Andreas; Kwon, Won-Tae. (2005). Internal variability in a 1000-yr control simulation with the coupled climate model ECHO-G — II. El Niño Southern Oscillation and North Atlantic Oscillation. doi:10.3402/tellusa.v57i4.14711
[1] DOIFeichter, J.; Lohmann, U.; Schult, I. (1997). The atmospheric sulfur cycle in ECHAM-4 and its impact on the shortwave radiation. doi:10.1007/s003820050163
[2] Roeckner, E.; Arpe, K.; Bengtsson, L.; Christoph, M.; Claussen, M.; Duemenil, L.; Esch, M.; Giorgetta, M.; Schlese, U.; Schulzweida, U. (1996). The atmospheric general circulation model ECHAM-4: Model description and simulation of present-day climate. http://hdl.handle.net/11858/00-001M-0000-0013-ADE3-C
[5] DOILegutke, Stephanie; Maier-Reimer, Ernst. (1999). Climatology of the HOPE-G Global Ocean - Sea Ice General Circulation Model. doi:10.2312/WDCC/DKRZ_Report_No21