Via Kenneth Richard
Greenland has not warmed (net) in the past 90 years.
From 80,000 to 20,000 years ago, Greenland warmed 10-15 Kelvin over a period of “several decades” 24 times (Kypke and Ditlevsen 2024).
These periods of sudden warming occur without a concomitant change in CO2 concentrations. And of course without human intervention.
Image source: Kypke and Ditlevsen 2024
In contrast, Greenland has not warmed (netly) since the 1930s, or since CO2 concentrations increased from 310 ppm to 425 ppm (Mikkelsen et al., 2018).
Image source: Mikkelsen et al., 2018
And Greenland’s warming has also been “unclear over the past two decades” (Matsumura et al., 2021).
Image source: Matsumura et al., 2021
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