The projections, derived from more than 200 computer simulations run by 10 global scientific centers, indicate an 86% chance that one of the next five years will surpass the 1.5 degrees Celsius warming threshold established by the Paris climate accord, with a 70% chance that the entire five-year period will average above that milestone.
For the first time, the agencies identified a slight possibility that global annual temperatures could reach the more alarming 2 degrees Celsius benchmark before the decade’s end.
