Carbon Budget
The total cumulative amount of carbon dioxide that can be emitted globally under a given temperature limit. It is tied to cumulative emissions rather than annual flows and serves as the arithmetic basis for climate policy and emissions accounting.
Timeline (last 90 days)
The IPCC Sixth Assessment Report estimates that to keep warming within 1.5°C (with 50% probability), the remaining carbon budget is about 500 billion tonnes of CO₂.
The carbon budget is tied to cumulative emissions rather than the emissions flow of a given year; historical emissions have already locked in part of the warming, and even if future emissions dropped to zero, the warming that has already occurred would not reverse.
All Facts (2)
The IPCC Sixth Assessment Report estimates that to keep warming within 1.5°C (with 50% probability), the remaining carbon budget is about 500 billion tonnes of CO₂.
50%UnverifiedThe carbon budget is tied to cumulative emissions rather than the emissions flow of a given year; historical emissions have already locked in part of the warming, and even if future emissions dropped to zero, the warming that has already occurred would not reverse.
50%