This documents contains the about 200 abstracts of the talks and poster presentations given at the 4th International Conference on Modelling of Global Climate Change and Variability. The seasonal to interannual variability is modelled as well as decadal and centennial climate variability. Other presentations deal with the prediction and detection of anthropogenic climate change (KW)Available from TIB Hannover / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman