2021 tied 2018 as the sixth-warmest year on record, new research shows.
Global temperatures were 1.5 degrees Fahrenheit above the average for NASA’s baseline period 1951-1980 and 1.9 degrees Fahrenheit warmer than the average at the start of the Industrial Revolution, according to independent analyses done by NASA and the National Oceanic and Atmospheric Administration.
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The past eight years are together the warmest years since modern recordkeeping began in 1880, NASA also said.
“Science leaves no room for doubt: Climate change is the existential threat of our time,” said NASA Administrator Bill Nelson, a former Democratic senator from Florida.
Nelson called the warming trend “an indisputable fact that underscores the need for bold action to safeguard the future of our country – and all of humanity.”
A separate new report from Berkeley Earth details the global reach of the warming trend on nations’ record temperature averages.
Some 1.8 billion people worldwide, including those in China, Nigeria, and 23 other countries, experienced their warmest year on record in 2021, Berkeley Earth found.
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However, it also concluded that 2021 was significantly colder on average than 2020.
NASA estimates that 2021’s La Nina weather pattern may have helped to cool global temperatures by about 0.06 degrees Fahrenheit relative to what their average would have otherwise been.
