Global temperatures are now available from @CopernicusECMWF's ERA5 reanalysis product for 2023.
— Zeke Hausfather (@hausfath) January 4, 2024
They find it was the warmest year on record by a large margin, at 1.48C above preindustrial levels, higher than the 1.43C that JRA-55 reported earlier this week: pic.twitter.com/NzOeTRTYVG