Carbon budget
ESG & GovernanceThe total amount of CO2 that can still be emitted while keeping warming below a given level, such as 1.5°C or 2°C.
Because warming depends on cumulative emissions, there is a limited budget for each temperature goal. The IPCC estimates these budgets, and they shrink every year as emissions continue. Science-based targets are derived by sharing the remaining budget across sectors and companies. The idea also explains why near-term cuts matter more than distant net zero dates.
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