Ice Trend

December 2021

The monthly global mean surface temperature anomaly in December 2021 (i.e. the average of the near-surface air temperature over the land and the SST) was +0.25°C above the 1991-2020 average (+0.80 °C above the 20th century average). ), Y it was the third warmest since 1891. On a longer time scale, global average surface temperatures have been increasing at a rate of about 0.75°C per century.

The five warmest years (for their anomalies in December)
1. 2015 (+0,61°C),
2. 2019 (+0,48°C),
3. 2021, 2018(+0.25°C),
5. 2014 (+0,24 °C)

Behavior of 2021: the sixth warmest

JMA monitors the long-term change of global average surface temperature anomalies for the purpose of monitoring global warming. This page shows long-term changes in annual and monthly global mean surface temperature anomalies.

The annual global mean surface temperature anomaly in 2021 (i.e., mean near-surface air temperature over land and SST) was +0.22°C above the 1991-2020 average (+0.77 °C above the 20th century average), and it was the sixth warmest since 1891. On a longer time scale, global average surface temperatures have been increasing at a rate of about 0.73°C per century.

The five warmest years (for their anomalies)

1. 2016 (+0,35°C),
2. 2020 (+0,34°C),
3. 2019 (+0.31°C),
4. 2015 (+0.30°C),
5. 2017 (+0,26 °C)

JMA