The Copernicus Climate Change Service (C3S) released new data showing that the last seven years globally were the seven warmest on record by a clear margin. Within these seven years, 2021 ranks among the cooler years, alongside 2015 and 2018. Meanwhile, Europe experienced its warmest summer on record, though close to previous warmest summers in 2010 and 2018. In conjunction with the Copernicus Atmosphere Monitoring Service (CAMS), C3S also reports that preliminary analysis of satellite measurements confirm that atmospheric greenhouse gas concentrations continued to rise during 2021, with carbon dioxide (CO2) levels reaching an annual global column-averaged record of approximately 414 ppm, and methane (CH4) an annual record of approximately 1876 ppb. Carbon emissions from wildfires worldwide amounted overall to 1850 megatonnes, especially fuelled by fires in Siberia. This was slightly higher than last year (1750 megatonnes of carbon emissions), although, the trend since 2003 is declining.

Global surface air temperatures

  • Globally, 2021 was the fifth warmest year on record, but only marginally warmer than 2015 and 2018
  • The annual average temperature was 0.3°C above the temperature of the 1991-2020 reference period, and 1.1-1.2°C above the pre-industrial level of 1850-1900
  • The last seven years have been the warmest years on record by a clear margin

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