Frederik Schenk

Aug 3, 2023 | nature.com | Gabriel West |Thomas Cronin |Flor Vermassen |Agatha de Boer |Frederik Schenk |Mohammad Razmjooei

AbstractThe extent and seasonality of Arctic sea ice during the Last Interglacial (129,000 to 115,000 years before present) is poorly known. Sediment-based reconstructions have suggested extensive ice cover in summer, while climate model outputs indicate year-round conditions in the Arctic Ocean ranging from ice free to fully ice covered. Here we use microfossil records from across the central Arctic Ocean to show that sea-ice extent was substantially reduced and summers were probably ice free.