The Dansgaard-Oeschger cycles of the last glacial period represent alternation between two climate states, with rapid transitions from one state to the other.
Notes on verification
Confirmed by multiple independent peer-reviewed sources (PNAS/PMC, arXiv papers, Springer review) describing D-O cycles as bimodal alternation between stadial/interstadial states with decadal-scale rapid transitions. Minor nuance exists regarding asymmetry of warming vs cooling transitions (sawtooth pattern), but core claim is well corroborated. [tier=gold indep_score=1.0 clusters=3 claim_tier=notable]
Sources
- Climate change - Abrupt Changes, Earth History, Impacts (seed:history_and_archaeology)
- https://pmc.ncbi.nlm.nih.gov/articles/PMC10483664/ (corroboration)
- https://arxiv.org/pdf/nlin/0505031 (corroboration)
- https://arxiv.org/pdf/2101.08050 (corroboration)
- https://link.springer.com/rwe/10.1007/978-1-4020-4411-3_55 (corroboration)