COMPASS: a comprehensive Climate-gOvernance Modeling & Policy ASsessment System supporting cutting-edge climate research

This paper introduces a comprehensive Climate-gOvernance Modeling & Policy ASsessment System (COMPASS) developed by the School of Ecology & Environment, Renmin University of China. The COMPASS includes a top−down computable general equilibrium model (CE3-CGE), a bottom−up energy technology model (PECE), a localized integrated assessment model (GCAM-CHN), as well as econometric and machine learning approaches. Together, these models simulate multi-scale interactions across energy systems, technological details, and macroeconomic dynamics, supporting policy analysis ranging from macrostructural trends to micro-level technoeconomic features, and from long-term pathways to short-term fluctuations. The COMPASS could provide robust scientific support for China’s carbon neutrality governance and contribute methodological advances and scenario-based insights to the broader field of global climate policy research.