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FAQ 5.4 Figure 1

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FAQ 5.4, Figure 1 | Various types of carbon budgets. Historical cumulative carbon dioxide (CO2) emissions determine to a large degree how much the world has warmed to date, while the remaining carbon budget indicates how much CO2 could still be emitted while keeping warming below specific temperature thresholds. Several factors limit the precision with which the remaining carbon budget can be estimated. Therefore, estimates need to specify the probability with which they aim at limiting warming to the intended target level (e.g., limiting warming to 1.5°C with a 67% probability).