The majority of scenarios in the IPCC database are generated by integrated assessment models (IAMs) and come from model intercomparison projects. However, the way in which the current model intercomparison projects are organized is not open to all IAM teams worldwide. Here we propose a transparent and inclusive platform that is open to anyone with an IAM regarding protocols development, scenario submissions and results evaluation. We discuss the challenges of this approach, particularly human resources and financial support. We identify diversity in the level of model capability and quality of model output as possibly critical issues. Despite such challenges, the IAM community and its scientific activities can improve and benefit from the proposed platform, ultimately contributing to better climate policymaking.
FUJIMORI Shinichiro;
KREY Volker;
RIAHI Keywan;
SUGIYAMA Masahiro;
HASEGAWA Tomoko;
EDMONDS James;
GUIVARCH Celine;
PALTSEV Sergey;
ROSE Steven;
SCHAEFFER Roberto;
TAVONI Massimo;
VISHWANATHAN Saritha;
VAN VUUREN Detlef;
WEITZEL Matthias;
2025-11-17
NATURE PORTFOLIO
JRC142057
1758-6798 (online),
https://www.nature.com/articles/s41558-025-02462-3,
https://publications.jrc.ec.europa.eu/repository/handle/JRC142057,
10.1038/s41558-025-02462-3 (online),
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