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.
Notes on verification
Confirmed by NOAA paleoclimatology data, Alley (2000) primary study, and corroborating peer-reviewed sources (ScienceDirect 2021, 2022). Minor variation in exact figures (5-10°C, ~12°C) across studies but core claim of abrupt ~10°C warming in a few decades is well supported. [tier=gold indep_score=0.983 clusters=3 claim_tier=notable]
Sources
- Younger Dryas | Definition, Causes, & Termination (seed:history_and_archaeology)
- https://skepticalscience.com/print.php?n=3630 (corroboration)
- https://www.sciencedirect.com/science/article/abs/pii/S0277379122004413 (corroboration)
- https://www.ncdc.noaa.gov/abrupt-climate-change/The%20Younger%20Dryas (corroboration)
- https://www.sciencedirect.com/science/article/abs/pii/S0277379121003127 (corroboration)