2024 Was the First Year Above 1.5C of Global Warming, Scientists Say

Scientists said the world just reached a grim milestone: the first full year where global temperatures exceeded 1.5C above pre-industrial times. Reuters reports: The milestone was confirmed by the European Union's Copernicus Climate Change Service (C3S), which said climate change is pushing the planet's temperature to levels never before experienced by modern humans. "The trajectory is just incredible," C3S director Carlo Buontempo told Reuters, describing how every month in 2024 was the warmest or second-warmest for that month since records began.

The planet's average temperature in 2024 was 1.6 degrees Celsius higher than in 1850-1900, the "pre-industrial period" before humans began burning CO2-emitting fossil fuels on a large scale, C3S said. Last year was the world's hottest since records began, and each of the past ten years was among the ten warmest on record. Britain's Met Office confirmed 2024's likely breach of 1.5C, while estimating a slightly lower average temperature of 1.53C for the year. U.S. scientists will also publish their 2024 climate data on Friday.

Governments promised under the 2015 Paris Agreement to try to prevent average temperatures exceeding 1.5C, to avoid more severe and costly climate disasters. The first year above 1.5C does not breach that target, which measures the longer-term average temperature. Buontempo said rising greenhouse gas emissions meant the world was on track to soon also blow past the Paris goal - but that it was not too late for countries to rapidly cut emissions to avoid warming rising further to disastrous levels. "It's not a done deal. We have the power to change the trajectory from now on," Buontempo said.