Online claims that record temperatures in 1997 contradict this are misleading; they compare an old dataset from the US National Oceanic and Atmospheric Administration with more recent findings from the European Union's Copernicus -- which does not use the same measuring stations or technology.
"Knowing the change over the course of months and years in one area gives you a pretty good estimate of the change in nearby areas," Hausfather said. He told AFP on May 29 that while NOAA and Copernicus data are different,"they are highly consistent and tell the same story." Data A screenshot taken on May 31, 2024 of a chart by environmental non-profit CarbonBrief shows historical temperature data compiled by Copernicus and NOAA
According to that more recent analysis,"1997 has a +0.49ºC anomaly value compared with the 2023 anomaly value of +1.19ºC ," NOAA's Gleason told AFP on May 28.). The agency says"absolute estimates of global average surface temperature are difficult," and that measuring anomalies more accurately describes climate variability.
"For example, a summer month over an area may be cooler than average, both at a mountain top and in a nearby valley, but the absolute temperatures will be quite different at the two locations," NOAA says."The use of anomalies in this case will show that temperatures for both locations were below average."says global temperature is expected to reach or exceed 1.5C of warming on average over the next 20 years (archivedhttps://www.youtube.