![]() Now, the 57.7 degrees (14.3 Celsius) of 1988 ranks as the 28th hottest year on record. ![]() In 1988, NASA’s then-chief climate scientist James Hansen grabbed headlines when he testified to Congress about global warming in a year that was the hottest on record at the time. The global average temperature last year was 58.5 degrees (14.7 Celsius), according to NOAA. While that threshold is important, extreme weather from climate change is hurting people now in their daily lives with about 1.2 degrees Celsius (2.2 degrees Fahrenheit) warming, Vose and Schmidt said. Vose said chances are 50-50 that at least one year in the 2020s will hit 1.5 degrees Celsius (2.7 degrees Fahrenheit) warming since pre-industrial times - the level of warming nations agreed to try to avoid in the 2015 Paris climate accord. There’s a 99% chance that 2022 will be among the 10 warmest years on record and a 10% chance it will be the hottest on record, said NOAA climate analysis chief Russell Vose in a Thursday press conference. “If you just look at the last the last 10 years, how many of them are way above the trend line from the previous 10 years? Almost all of them,” Schmidt said in an interview. Both Schmidt and Hausfather said early signs point to that but it’s hard to know for sure. There was such a distinctive jump in temperatures about eight to 10 years ago that scientists have started looking at whether the rise in temperatures is speeding up. The other 2021 measurements came from the Japanese Meteorological Agency and satellite measurements by Copernicus Climate Change Service in Europe and the University of Alabama in Huntsville. Global temperatures, averaged over a 10-year period to take out natural variability, are nearly 2 degrees (1.1 degrees Celsius) warmer than 140 years ago, their data shows. The last eight years have been the eight hottest on record, NASA and NOAA data agree. And it’s because of us.Īnd it’s not going to go away until we stop increasing the amount of carbon dioxide in the atmosphere.” Gavin Schmidt, the climate scientist who heads NASA’s temperature team, said “the long-term trend is very, very clear. “It’s the long-term trend, and it’s an indomitable march upward.” “So it’s not quite as headline-dominating as being the warmest on record, but give it another few years and we’ll see another one of those” records, said climate scientist Zeke Hausfather of the Berkeley Earth monitoring group that also ranked 2021 the sixth hottest. Still, they said 2021 was the hottest La Nina year on record and that the year did not represent a cooling off of human-caused climate change but provided more of the same heat. Scientists say a La Nina - natural cooling of parts of the central Pacific that changes weather patterns globally and brings chilly deep ocean water to the surface - dampened global temperatures just as its flip side, El Nino, boosted them in 2016. NASA said 2021 tied with 2018 for sixth warmest, while NOAA puts last year in sixth place by itself. Six different calculations found 2021 was between the fifth and seventh hottest year since the late 1800s. READ MORE: A new ratings industry is emerging to help homebuyers assess climate risks science agencies - NASA and the National Oceanic and Atmospheric Administration - and a private measuring group released their calculations for last year’s global temperature on Thursday, and all said it wasn’t far behind ultra-hot 20. Earth simmered to the sixth hottest year on record in 2021, according to several newly released temperature measurements.Īnd scientists say the exceptionally hot year is part of a long-term warming trend that shows hints of accelerating. ![]()
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