Climate records preserved in Greenlandic ice show that Earth's last ice age included about 25 periods of abrupt climate change.
Notes on verification
Consistently corroborated by NOAA, peer-reviewed literature (Nature Communications, ScienceDirect), and academic research summaries (TiPES/University of Copenhagen), all confirming ~25 Dansgaard-Oeschger abrupt climate events during the last glacial period. [cascade flags: wikipedia_dropped_other_sources_exist | tier=silver indep_score=1.0 clusters=4 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.sciencedirect.com/science/article/pii/S0960982219311169 (corroboration)
- https://www.nature.com/articles/s41467-024-45507-5 (corroboration)
- https://www.tipes.dk/study-suggests-abrupt-climate-change-during-the-last-ice-age-was-controlled-by-co2-levels/ (corroboration)