How to fit regionalized characterization factors in matrix-based LCA? Comment to a recent proposal

Key Points

• This research aims to evaluate the integration of regionalized characterization factors within matrix-based life cycle assessment (LCA) frameworks.
• Analyzed the structure of characterization factors in the context of LCA.
• Discussed the selection of impact categories relevant to regional assessments.
• Critiqued the existing methodologies presented in prior literature.
• Identified gaps in the current proposal regarding regionalized impact assessments.
• Suggested enhancements to improve the relevance of characterization factors at regional levels.