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MICA - Modeling International Climate Agreements

The Model of International Climate Agreements (MICA) is a multi-actor optimal growth model describing the basic economic dynamics of selected world regions as well as the dynamics of global warming due to anthropogenic emission of greenhouse gases.

MICA can be solved for non-cooperative behavior of the regions (Nash Equilibrium), full cooperation (global social optimum), and any coalition of regions cooperating in climate policy (Partial Agreement Nash Equilibrium).

Model documentation

The model equations are documented in the publications Lessmann et al. (2009) and Lessmann and Edenhofer (2010), see below for downloadable PDFs of the articles.

Further illustrations are available from presentations of the model:

  • Overview poster
  • Schematic of the model structure

    • Structure of MICA

  • Overview of the model algorithm

    • Model algorithm

    For questions about MICA, please contact Kai Lessmann.

    Model versions

    VersionChanges/addtional features
    1.1Endogenous technological change; used in Lessmann and Edenhofer (2010)
    1.0Basic model version + international trade with national product differentiation; used in Lessmann et al. (2009)

    Publications

  • Lessmann, K. and O. Edenhofer: "Research Cooperation and International Standards in a Model of Coalition Stability." Resource and Energy Economics, in press. doi:10.1016/j.reseneeco.2010.01.001, PDF.
  • Lessmann, K., R. Marschinski, O. Edenhofer (2009). "The effects of tariffs on coalition formation in a dynamic global warming game" Economic Modelling 26(3):641-649. doi:10.1016/j.econmod.2009.01.005, PDF
    • Document Actions