During Earth's last ice age, abrupt climate change events featured temperature spikes occurring over decades, followed by gradual cooling in the North Atlantic.
Notes on verification
Well-documented Dansgaard-Oeschger events, confirmed by multiple independent scientific sources including Britannica, NOAA NCEI, and Nature Scitable, consistent with paleoclimate consensus. [cascade flags: aggregator_dropped_primary_exists | tier=silver indep_score=1.0 clusters=2 claim_tier=notable]
Sources
- Is the Atlantic Ocean's great conveyer belt really slowing ... (seed:science_and_space)
- https://www.ncei.noaa.gov/sites/default/files/2021-11/2%20Heinrich%20and%20Dansgaard%E2%80%93Oeschger%20Events%20-%20Final-OCT%202021.pdf (corroboration)
- https://www.nature.com/scitable/knowledge/library/abrupt-climate-change-during-the-last-ice-24288097/ (corroboration)