FIGURE 1. Cumulative emissions.
From the following article:
Roger Pielke, Jr, Tom Wigley & Christopher Green
Nature 452, 531-532(3 April 2008)
doi:10.1038/452531a
A range of 'built-in' emissions reductions (blue) in the scenarios used by the Intergovernmental Panel on Climate Change (IPCC). Total cumulative emissions to 2100 associated with a frozen-technology baseline are shown for: six individual scenarios, the means of these scenarios (n=6), and for all 35 IPCC scenarios, and the median of the scenario set (AR4). Additional reductions will have to be achieved by climate policy (red), assuming carbon-dioxide stabilization at about 500 parts per million (p.p.m.), leaving allowed emissions for this stabilization target (yellow).
R. KRAUSE/REUTERS
