Graph of the temperature anomaly predicted for CO2 doubling from various models and the observed anomaly (From: IPCC). The climate models from centers across the globe featured here include: CGM1 (Canadian Center for Climate Modeling and Analysis, Canada); CCSR-NIES (Center for Climate Research Studies, Japan & National Inst. for Environmental Studies, Japan); CSIRO2 (Australia Commonwealth Scientific and Industrial Research Organisation, Australia); ECHAM3 & ECHAM 4 (Deutsches Klimarechenzentrum, Germany); GFDL-R15 (Geophysical Fluid Dynamics Laboratory, USA); HadCM2 & HadCM3 (Hadley Centre for Climate Predication and Research, UK); and NCAR-DOE (National Center for Atmospheric Research & Department of Energy, USA).