The risks are compounding, and without immediate action the impacts will be devastating.
Research paper 14 September 2021 Summary
•If policy ambition, low-carbon technology deployment and investment follow current trends, 2.7°C of warming by the end of this century is likely, relative to pre-industrial temperatures. A plausible worst case of 3.5°C is possible (10% chance). These projections assume Paris Agreement signatories meet their NDCs. If they fail to do so, the probability of extreme temperature increases is non-negligible.
•Any relapse or stasis in emissions reduction policies could lead to a plausible worst case of 7°C of warming by the end of the century (10% chance).