Flor Vermassen

May 20, 2024 | nature.com | Flor Vermassen

AbstractGlobal warming is causing rapid changes to the cryosphere. Predicting the future trajectory of the cryosphere requires quantitative reconstruction of its past variations. A recently identified sea-ice-associated haptophyte, known as Group 2i Isochrysidales, has given rise to a new sea-ice proxy with its characteristic alkenone distributions.

Aug 4, 2023 | fotos.europapress.es | Flor Vermassen

Código: 5367853 Fecha: 04/08/2023 Dimensiones: 711 x 483 (0.04MB) Fotos del Tema: 1 Pie de Foto: Fotografía tomada en la zona marginal de hielo del Océano Ártico desde el rompehielos sueco Oden, verano de 2021. Firma: FLOR VERMASSEN

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.