The world has known for years that the Arctic is warming faster than the rest of the planet. But scientists just discovered it's much worse than previously thought.
So why had previous studies underestimated the Arctic's warming? Rantanen and his team of researchers believe many other studies used"older, possibly outdated" estimates rather than recent observations.
Additionally, researchers uncovered an issue with prediction models. Rantanen said that, as a group, climate models underestimate the true Arctic amplification. It's also possible that the models didn't consider enough the impact of internal climate variations, natural changes in the circulation of the ocean and atmosphere, which Rantanen told CBS News probably"contributed considerably" to the Arctic amplification.
Rantanen's findings, which were first posted as a preprint in July 2021, echo NASA climate scientist Peter Jacobs' report at the American Geophysical Union's meeting in
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