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World | World Temperature Anomalies in 2020 - DG ECHO Daily Map | 26/01/2021

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Globally, 2020 was one of the three warmest years on record, tied with 2016, the previous warmest year. Several datasets concur that 2011-2020 became the warmest decade recorded.

According to the Copernicus Climate Change Service (C3S), 2020 was 0.6°C warmer than the standard 1981-2010 reference period and around 1.25°C above the 1850-1900 period. In 2020, the largest annual temperature deviation from the 1981-2010 average was concentrated over the Arctic and northern Siberia, reaching to over 6°C above average. In Europe, 2020 became the warmest year on record at 1.6°C above the 1981-2010 reference period, and 0.4°C above 2019, the previous warmest year.

Temperature anomalies were factors contributing to persistent heat and wildfires in Siberia (Daily Map of 9 Dec 2020), as well as low Arctic sea ice extent (Daily Map of 21 Sept 2020). In 2020, the Arctic sea ice cover decreased to the second lowest extent (after 2012), since modern recordkeeping began in the late 1970s, as reported by NASA/NSDC.