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Model

MERGE – Model for Estimating the Regional and Global Effects of Greenhouse Gas Reductions MERGE

MERGE was designed to estimate the regional and global economic impacts of greenhouse gas reductions. The model is sufficiently to flexible to explore alternative views on a wide range of issues, such as: costs of abatement, damages from climate change, valuation and discounting. MERGE is made up of four submodels:

MERGE was designed to estimate the regional and global economic impacts of greenhouse gas reductions. The model is sufficiently to flexible to explore alternative views on a wide range of issues, such as: costs of abatement, damages from climate change, valuation and discounting. MERGE is made up of four submodels:

  1. domestic and international economy;
  2. energy-related emissions of greenhouse gases;
  3. non-energy emissions of GHG’s;
  4. global climate change – market and non-market damages

The model is relevant in assessing the socio-economic impacts of the climate change mitigation policies. In particular, this model can be used to estimate the economic cost and benefits of such policies.

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Celebrating the Release of GCAM-China-v8 to Support China’s National Climate Assessment

On April 12, 2026, the Center for Global Sustainability at the University of Maryland, Peking University and Tsinghua University celebrated the release of GCAM-China-v8. This update introduces a series of new features, including harmonization with the latest global GCAM v8.2 framework, updating the base year to 2021, introducing a provincial-level

IFs Model: Updates and Resources SSPs

We are pleased to share several recent developments and resources that may be of interest to the community: Preprint on New SSP OperationalizationA preprint article has been released introducing a new operationalization of the Shared Socioeconomic Pathways (SSPs) for 188 countries through 2150. This work covers a wide range of