Technologyreview February 7, 2019
2018 was the fourth warmest year since records began in 1880, according to studies out today from NASA, the UK Met Office, and the US National Oceanic and Atmospheric Administration (NOAA).
Record-breaking: The NASA study found that Earth’s global surface temperature last year was 0.83 °C warmer than the 1951-1980 mean. That temperature was topped only in 2016, 2017, and 2015. The data shows that the last five years are collectively the warmest ever recorded, while 18 of the 19 hottest years have taken place since 2001. The NOAA study, which uses a different methodology, agreed.