Climate records preserved in Greenlandic ice show that Earth's last ice age included about 25 periods of abrupt climate change, with temperature spikes occurring over decades followed by gradual cooling in the North Atlantic.
Sources
- Is the Atlantic Ocean's great conveyer belt really slowing ... (nationalgeographic.com)
- https://www.ncei.noaa.gov/sites/default/files/2021-11/2%20Heinrich%20and%20Dansgaard%E2%80%93Oeschger%20Events%20-%20Final-OCT%202021.pdf (ncei.noaa.gov)
- https://www.sciencedirect.com/science/article/pii/S0960982219311169 (sciencedirect.com)
- https://www.sciencedirect.com/topics/earth-and-planetary-sciences/dansgaard-oeschger-cycle (sciencedirect.com)
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