Global warming in 2021 was the sixth hottest in history when the U.S. experienced the fourth hottest year and was hit by 20 natural disasters that cost more than $ 145bn, according to the US National Oceanic and Atmospheric Administration (NOAA).
Although the 2021 heat was slightly cooler than two years ago, the western US was not affected by wildfires that cost more than $ 10bn.
Other extreme weather events included the fifth Texas hurricane in February, which cost $ 24bn, and Hurricane Ida in late August, which cost $ 75bn.
“Unfortunately, we expect to face these challenges in the tropics,” said Russell Bonke, chief of the meteorologist at NOAA. “And some of these incidents have been severely curtailed by global warming, such as the warming of the Pacific Northwest.”
In some cases, such as the extreme cold in Texas, part of the weather was not clear, they all added.
The past seven years have been extremely hot, reflecting the global warming that is occurring as a result of global warming.
By 2022, global warming is expected to be among the 10 warmest ever recorded, says Bonke. “All of this is driven by the amount of greenhouse gas emissions like carbon dioxide.”
Two things have contributed to 2021 being a little cooler than the last two years: the The girl climate across the Pacific and the economic recovery that triggers aerosols in the atmosphere.
Tiny particles that live in the atmosphere, tiny particles that emit air, cool us when they reflect the light of the sun.
“In 2020, we estimated that the closure had slightly increased global warming, thanks to the removal of nitrates and other aerosols,” said Gavin Schmidt, director of NASA’s Goddard Institute for Space Studies. “So 2021 would be a cool year, even without La Niña.”
A similar NASA study, which was re-released this week, found that 2021 was linked to 2018 for the sixth hottest year in the world, due to differences in origin and method.
The heat analysis from NASA and NOAA followed a similar analysis from other agencies, including the European Copernicus group, which calculated that by 2021 the fifth-warmest on record.