Even though atmospheric CO2 rose from 337 ppm in 1979 to 420 ppm in 2022, there is no evidence of a warming trend across Antarctica during this period.

According to a new study, Antarctica’s station data indicate a pronounced cooling trend by over -1°C (-0.53°C per decade) from 1979-1999. The cooling trend thereafter slowed to a pause (-0.004°C per decade) from 1999-2022.

“Reanalysis” data reveal a less pronounced -0.43°C per decade cooling trend from 1979-1999, but a reversal to a +0.29°C per decade warming trend from 1999-2022.

Both the station data and the reanalyzed data affirm an overall long-term (43 years) cooling trend across Antarctica since 1979.