Carbon and emission budgets

To stabilise warming, CO2 emissions ultimately have to be reduced to zero. The faster this zero point is achieved, the lower the level at which warming stabilises. We explore the total cumulative emissions (budgets) consistent with long-term global climate goals, such as holding warming below 1.5 and 2°C warming relative to pre-industrial levels


Based on scenarios underlying the IPCC's 6th Assessment Report, in this paper we construct a suite of scenarios that combine the following elements: (a) two quantifications of a moral claim to the remaining carbon space by South Asia, and Africa, (b) a 'highest possible emission reduction' effort by developed regions, and (c) a corresponding range for other developing regions. Our findings raise important questions of perspectives on equity in the context of the Paris Agreement including on the critical importance of climate finance.  
This fourth and final ZERO IN report looks at how cutting emissions this decade can limit temperature rise and other climate impacts in the near-term. It looks back to what was set out by governments in the Glasgow Climate Pact and unpacks what “enhanced mitigation ambition …. in this critical decade” must look like, based on the latest IPCC science.