The power of bridging decision scales
Model coupling for advanced climate policy analysis
Tatiana Filatova (TU Delft - Technology, Policy and Management, TU Delft - Technology, Policy and Management)
Joos Akkerman (TU Delft - Technology, Policy and Management, TU Delft - Technology, Policy and Management)
Francesco Bosello (Fondazione Centro Euro-Mediterraneo sui Cambiamenti Climatici, Ca' Foscari University Venice)
Theodoros Chatzivasileiadis (TU Delft - Technology, Policy and Management, TU Delft - Technology, Policy and Management)
Ignasi Cortés Arbués
Amineh Ghorbani (TU Delft - Technology, Policy and Management, TU Delft - Technology, Policy and Management)
Olga Ivanova (Planbureau voor de Leefomgeving)
Nina Knittel (Karl-Franzens-Universitat Graz)
Jan Kwakkel (TU Delft - Technology, Policy and Management, TU Delft - Technology, Policy and Management)
Francesco Lamperti (Scuola Superiore Sant’Anna, Fondazione Centro Euro-Mediterraneo sui Cambiamenti Climatici)
Nicholas R. Magliocca (TU Delft - Technology, Policy and Management)
Giacomo Marangoni (TU Delft - Technology, Policy and Management, TU Delft - Technology, Policy and Management, Fondazione Centro Euro-Mediterraneo sui Cambiamenti Climatici)
Stefan Nabernegg (Karl-Franzens-Universitat Graz)
Anton Pichler (WU Wien)
Adrian Poujon
Karolina Safarzynska (University of Warsaw)
Alessandro Taberna (TU Delft - Technology, Policy and Management, Fondazione Centro Euro-Mediterraneo sui Cambiamenti Climatici, TU Delft - Technology, Policy and Management)
Mariësse A.E. van Sluisveld (Planbureau voor de Leefomgeving)
Liz Verbeek (TU Delft - Technology, Policy and Management, TU Delft - Technology, Policy and Management)
Taoyuan Wei (CICERO Center for International Climate and Environmental Research)
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Abstract
Climate policy faces increasingly complex challenges that span multiple human decision scales in nature-society systems. Contemporary climate policy models, while valuable and increasingly versatile in handling spatial and temporal scales, struggle to capture interacting multiscale decisions on the socioeconomic side. This perspective draws attention to the power of coupling among different modeling families, taking integrated assessment models (IAM), computable general equilibrium models (CGE), and agent-based models (ABM) as examples. Recent computational advances, maturity of models, availability of data, and interdisciplinary expertise make model coupling an increasingly feasible, effective, and useful tool for climate policy analysis. We examine the unique contributions of each modeling approach, highlight synergies from uniting their strengths, and discuss alternatives to and conditions for coupling. In addressing methodological challenges, we present examples of effective coupling of IAM-ABM-CGE, emphasizing the importance of maintaining model integrity while enhancing policy relevance. By bridging human decision scales and leveraging complementary strengths, coupled models can provide nuanced insights into climate-economy interactions, ultimately supporting effective and equitable-not just efficient and optimal-climate policies.
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