The atmosphere-ocean general circulation model ECHAM3/LSG is used for climate change and climate variability studies. In order to study the internal variability of the model a control simulation with fixed present-day CO2 concentration has been performed. The models ECHAM3 and LSG are described in the DKRZ reports No.6 and No.2, respectively.
[1] DOIVoss, R.; Sausen, R.; Cubasch, U. (2001). Periodically synchronously coupled integrations with the atmosphere-ocean general circulation model ECHAM3/LSG. doi:10.1007/s003820050221