Distribution of a Global CO2 Budget - A Comparison of Resource Sharing Models

In view of the connection between the cumulative CO₂ emissions and global warming, as described in the IPCC reports, the key question arises how a globally remaining budget could be realistically distributed among countries. The discussion of this issue can contribute to NDCs that are Paris-compatible in sum.

Resource sharing models directly address the allocation of such a remaining global budget. This article will therefore give an overview of the properties of resource sharing models that, in principle, use current emissions and population as a distribution key. With the current emissions, the current reality and with the population climate justice can be mapped.

We also identified a possible additional helpful assessment criterion for NDCs: the implicit weighting of population.

Web applications for analysed approaches:

• Regensburg Model: http://RM.climate-calculator.info
• ESPM: http://short.national-budgets.climate-calculator.info
• RM Scenario Types: http://paths.climate-calculator.info