Climate Change

State of the climate: 2020 ties as warmest year on record

There were record lows in sea ice in Arctic between July and November. Image: REUTERS/Natalie Thomas

Zeke Hausfather

US Analyst, Carbon Brief

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Global average surface temperatures for each year relative preindustrial with their respective uncertainties (width of the curves) from Berkeley Earth. Note that warming is shown here relative to the temperature to the 1850-1900 period. Image: Dr Robert Rohde
Surface temperature anomalies for 2020 from Berkeley Earth. Note that Berkeley uses a 1951-1980 baseline to calculate anomalies. Image: Berkeley Earth
Regions of the world among the five warmest (reds) of five coolest (blues) on record for average annual temperatures in 2020. Figure from Berkeley Earth. Image: Berkeley Earth
Ice free conditions have become more common. Image: Carbon Brief

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