... The planet likely briefly exceeded a key warming threshold on Friday and Saturday for the first time since at least the beginning of instrument records, new data shows.
Driving the news: The indication that Friday and Saturday were the first two days on record to have a global average surface temperature above 2C when compared with preindustrial levels, emerged first from a dataset maintained by the European Center for Medium-Range Weather Forecasts (ECMWF).
- - - "Our best estimate is that this was the first day when global temperature was more than 2C above 1850-1900 (or pre-industrial) levels, at 2.06C," Samantha Burgess, the deputy director of the Copernicus Climate Change Service stated on X, formerly known as Twitter, on Sunday.
- - - She also noted the Saturday record in a post on Monday, stating: "Now two Nov 2023 days where global temperature exceeded 2C in ERA5."
- - - When compared with the 1991-2020 average, Friday's global mean was a record-setting 1.17C (2.1F) above average.
- - - In a post on X on Monday, the ECMWF found that Friday was a bit warmer, at 2.07C above preindustrial levels, while Saturday reached an anomaly of 2.06C.
Why it matters: A daily global average surface temperature climb to greater than 2C above preindustrial levels indicates just how quickly the planet is warming, including some of the extremes that are now possible. ...