Here we present the scenario tool (a set of matlab scripts and data) that were used to implement a number of scenarios for 2050 that describe possible routes to a two-degrees climate change target. These scenarios help us :
to explore the requirements for achieving emissions reductions in 2050 consistent with a two-degrees climate change scenario;
to provide an understanding of the dimension of changes required for the transformation to a low-carbon economy by mid-century in terms of the techno-economic changes needed, the economy-wide scale of the transformation, and the changes needed in selected key sectors;
to define a set of options (building blocks) for coherent instrument mixes, specifying the scale and level at which policy instruments must be applied.