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Two U.S. government agencies - space agency NASA, and the National Oceanic and Atmospheric Administration (NOAA), said Thursday 2021 was the sixth hottest year on record.
In separate reports, the agencies also said their data indicates the last eight years were the eight hottest since modern recordkeeping began. They also said global temperatures in 2021 were .85 degrees Celsius above the 20th century average. NOAA says last year was also the 45th year - since 1977 - average global temperatures rose above the 20th century average.
The agencies' data shows global temperatures, averaged over a 10-year period to take out natural variability, are nearly 1.1 degrees Celsius warmer than 140 years ago.
In an interview with reporters, NOAA analysis chief Russell Vose said it is "warmer now than any time in at least the past 2,000 years, and probably much longer." He predicted 2022 would also be among the warmest years ever.
Both agencies attributed weather anomalies from the past year, like melting sea ice, severe wildfires, and record flooding, as attributable to the warming climate.
NASA climate scientist Gavin Schmidt told the Associated Press the long-term trend is "very, very clear. And it's because of us. And it's not going to go away until we stop increasing the amount of carbon dioxide in the atmosphere."
Some information for this report came from The Associated Press, and Reuters.