Preprints
https://doi.org/10.5194/egusphere-2025-3546
https://doi.org/10.5194/egusphere-2025-3546
11 Aug 2025
 | 11 Aug 2025

GCAM-Europe v7.2.0: Enhancing Policy-Relevant Climate Modelling Through Spatial and Sectoral Detail

Jon Sampedro, Russell Horowitz, Clàudia Rodés-Bachs, and Dirk-Jan Van de Ven

Abstract. Integrated Assessment Models (IAMs) serve as critical instruments for scenario-based analysis and have been instrumental in informing environmental policy at both global and regional scales. However, their limited geographical and sectoral scope constrains their ability to evaluate comprehensive policy packages such as the European Union's Fit-for-55. GCAM-Europe, an expansion of the well-stablished Global Change Analysis Model (GCAM) addresses this gap by explicitly representing energy, land use, agriculture, water, and emissions systems for European Member States and key non-EU countries. Operating within a global framework, the model enables integrated assessment of policy impacts both across and within European regions, while also capturing spillover effects in other regions in the world. As an open-access and continuously evolving platform, it provides a valuable tool for European researchers, policymakers, and stakeholders to design, test, and evaluate climate and environmental strategies that support a just and effective climate transition.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this paper. While Copernicus Publications makes every effort to include appropriate place names, the final responsibility lies with the authors. Views expressed in the text are those of the authors and do not necessarily reflect the views of the publisher.
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Jon Sampedro, Russell Horowitz, Clàudia Rodés-Bachs, and Dirk-Jan Van de Ven

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2025-3546', Anonymous Referee #1, 03 Sep 2025
    • AC1: 'Reply on RC1', Jon Sampedro, 15 Oct 2025
  • RC2: 'Comment on egusphere-2025-3546', Anonymous Referee #2, 23 Oct 2025
Jon Sampedro, Russell Horowitz, Clàudia Rodés-Bachs, and Dirk-Jan Van de Ven
Jon Sampedro, Russell Horowitz, Clàudia Rodés-Bachs, and Dirk-Jan Van de Ven

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Short summary
GCAM-Europe is an open-access modelling tool designed to assess the impacts of climate and environmental policies across European countries. Built on a global framework, it adds detailed regional and sectoral representation for Europe, including energy, land use, water, and emissions. This allows for analysis of policy effects within and between countries, as well as global spillover effects, to support transparent, evidence-based decision-making.
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