The warming that ended the Younger Dryas took only about 40–50 years, with Greenland ice-core samples showing temperature increases of up to 10°C (18°F) in just a few decades.
Notes on verification
Multiple independent peer-reviewed sources (Nature 1989, Quaternary Science Reviews 2022, arXiv 2010) and expert commentary corroborate rapid warming of ~7-10°C within a few decades at the end of the Younger Dryas, though exact magnitude/duration vary slightly across studies. [tier=gold indep_score=1.0 clusters=4 claim_tier=notable]
Sources
- Younger Dryas | Definition, Causes, & Termination (seed:history_and_archaeology)
- https://www.nature.com/articles/339532a0 (corroboration)
- https://arxiv.org/pdf/1007.1376 (corroboration)
- https://www.sciencedirect.com/science/article/abs/pii/S0277379122004413 (corroboration)
- https://news.wisc.edu/greenland-ice-may-exaggerate-magnitude-of-13000-year-old-deep-freeze/ (corroboration)