The sudden warming that ended the Younger Dryas took approximately 40 to 50 years.
Notes on verification
Confirmed by Britannica and corroborated by peer-reviewed primary sources (Dansgaard et al. 1989; Alley 2000 review). Precise duration varies by proxy (20-60 years), but 40-50 year range is well-established for Greenland ice-core based estimates. [tier=silver indep_score=0.77 clusters=2 claim_tier=notable]
Sources
- Greenland Ice-core Project/Greenland Ice Sheet Project 2 | geochronology | Britannica (seed:history_and_archaeology)
- https://www.nature.com/articles/339532a0 (corroboration)
- https://www.sciencedirect.com/science/article/abs/pii/S0277379199000621 (corroboration)