Greenland ice-core samples indicate that temperatures increased by up to 10 °C (18 °F) in just a few decades at the end of the Younger Dryas.
Sources
- Younger Dryas | Definition, Causes, & Termination (britannica.com)
- https://skepticalscience.com/print.php?n=3630 (skepticalscience.com)
- https://www.sciencedirect.com/science/article/abs/pii/S0277379122004413 (sciencedirect.com)
- https://www.ncdc.noaa.gov/abrupt-climate-change/The%20Younger%20Dryas (ncdc.noaa.gov)
- https://www.sciencedirect.com/science/article/abs/pii/S0277379121003127 (sciencedirect.com)
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