This dataset consists of organic biomarkers used to reconstruct the sea surface temperature and sea ice conditions in the Pliocene Nordic Seas. Specifically, it includes alkenone, IP25 and sterol data from the Pliocene of two Ocean Drilling Program sites, ODP Site 907 in the Iceland Sea and ODP Site 911 on the Yermak Plateau (Arctic Ocean).
Supplement to: Clotten, Caroline; Stein, Ruediger; Fahl, Kirsten; Schreck, Michael; Risebrobakken, Bjørg; De Schepper, Stijn (2019): On the causes of Arctic sea ice in the warm Early Pliocene. Scientific Reports, 9(1)