PRDavisCaldeiraInfrastructurebreakoutFINFig8-23-10

Graph shows projected decline of carbon dioxide emissions in gigatons (billions of tons) from existing energy and transportation infrastructure (multicolored wedge) over the next 50 years, compared to three emissions scenarios (dotted lines) from the Special Report on Emissions Scenarios (SRES) Intergovernmental Panel on Climate Change (IPCC). Colors within the wedge indicate projected emissions by various countries and regions. Non energy emissions shown are global emissions projected under the SRES A2 scenario. High, middle, and low emissions projections correspond to the SRES A1G-FI, A2, and B1 scenarios, respectively.