Twenty years ago, government experts said 1.5C warming in the Arctic from 1840 to 1950 was largely due to natural forces, but recent warming “must be attributed to greenhouse gases”
Overpeck’s conclusion about recent warming was undoubtedly due to using fake NASA/NOAA graphs like this one.
The graph above was massively tampered with to cool the past. The next graph shows the data has been altered.
Had Overpeck used the raw data, he would have seen a nearly perfect correlation between Eastern Arctic temperatures and the Atlantic Multidecadal Oscillation (AMO.)
The AMO peaked about ten years ago. Since then, the Arctic sea ice minimum has gotten larger.
NASA and NOAA are destroying science and policy with their data tampering.