Tool for the Calculation of Paris-compatible National Emission Paths with the Regensburg Model

Basic idea behind the Regensburg Model (RM)

1. Global paths:
   Global emission paths are determined that are compatible with a global CO2 budget to be specified. For this purpose, the tool provides the Regensburg Model Scenario Types RM 1 - 6 (see Technical note).
2. National paths:
   National emission paths are derived from this global paths with the Regensburg Formula, which leads to the convergence of per capita emissions.

Central features of the Regensburg Formula:

• monotonic paths in the convergence period
  • countries that start with per capita emissions below the convergence level will never exceed this convergence level
  • countries that start above the convergence level with per capita emissions must reduce their emissions from the outset
• results represent a kind of “moral lower limit” for industrialized countries if the convergence level is chosen relatively low

The main applications of the Regensburg Model:

1. Determining Paris-compatible national CO2 budgets based on converging per capita emissions.
2. Depending on the scenario type selected for the global path and level of convergence, an implicit weighting of the population (IWP) results, which is the same for all countries. This IWP can be used as an explicit weighting in our ESPM.

Here is a preview of the tool.

Simplified web app for the Regensburg Model: http://rm.climate-calculator.info