A principle-based framework to determine countries' fair warming contributions to the Paris Agreement.

ABSTRACT: Equity is a cornerstone of global climate policy, yet differing perspectives mean that international agreement on how to allocate mitigation efforts remains elusive. A rich literature informs this question, but a gap remains in approaches that appropriately consider non-CO₂ emissions and their warming contributions. In this study, we address this gap and define a global warming budget applicable to all anthropogenic greenhouse gases that is allocated to countries based on principles drawn from international treaties and environmental law. We find that by 2021 a range of 84 to 90 countries, including but not limited to all major developed countries, exhausted their budget share compatible with keeping warming to 1.5 °C (with 50% likelihood) under all allocation approaches conside

SUBMITTER: Li M 

PROVIDER: S-EPMC11770098 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature