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Global Change Assessment Model (GCAM)

The Global Change Assessment Model (GCAM) is an integrated assessment tool for exploring consequences and responses to global change.

It has particular emphasis on the representation of human earth systems including interactions between the global economic, energy, agricultural, land use and technology systems. The model can be used to explore climate change mitigation policies including carbon taxes, carbon trading, regulations, and accelerated deployment of energy technology.

Key questions addressed:

  • What is the national and global impact of technologies and policies related to greenhouse gas (GHG) emissions?
  • How do policies or international agreements that to limit GHG emissions impact the energy system as well as land use and land cover?
  • How do GHG concentrations, radioative forcing, and climate change affect temperature and sea level rise?

Sample data inputs:

  • Population
  • Labor participation
  • Labor productivity growth
  • Energy technology assumptions
  • Agricultural and land use data

Sample quantitative outputs:

  • Future energy supply and demand
  • GHG emissions
  • Radiative forcing
  • Climate effects


Related publications are listed here.

Tool Summary

  • Free
Expertise Required:
  • Moderate
Geographic Scope:
  • Global
  • Policy
Impacts Assessed:
  • Economic
    • Energy Security
  • Environmental
    • Air
    • Greenhouse Gases