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Biomarker data of four sediment cores from the Arctic Ocean (2017)

Stein, Ruediger ; Fahl, Kirsten ; Gierz, Paul ; [et al.]

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In: Supplement to: Stein, Ruediger; Fahl, Kirsten; Gierz, Paul; Niessen, Frank; Lohmann, Gerrit (2017): Arctic Ocean sea ice cover during the penultimate glacial and the last interglacial. Nature Communications, 8(1), 13 pp, https://doi.org/10.1038/s41467-017-00552-1

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Publication Date: 2023-03-16

Description: Coinciding with global warming, Arctic sea ice has rapidly decreased during the last four decades and climate scenarios suggest that sea ice may completely disappear during summer within the next about 50-100 years. Here we produce Arctic sea ice biomarker proxy records for the penultimate glacial (Marine Isotope Stage 6) and the subsequent last interglacial (Marine Isotope Stage 5e). The latter is a time interval when the high latitudes were significantly warmer than today. We document that even under such warmer climate conditions, sea ice existed in the central Arctic Ocean during summer, whereas sea ice was significantly reduced along the Barents Sea continental margin influenced by Atlantic Water inflow. Our proxy reconstruction of the last interglacial sea ice cover is supported by climate simulations, although some proxy data/model inconsistencies still exist. During late Marine Isotope Stage 6, polynya-type conditions occurred off the major ice sheets along the northern Barents and East Siberian continental margins, contradicting a giant Marine Isotope Stage 6 ice shelf that covered the entire Arctic Ocean.

Keywords: AWI_Paleo; Paleoenvironmental Reconstructions from Marine Sediments @ AWI

Type: Dataset

Format: application/zip, 4 datasets

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6) (Figure 3) Monthly interpolated coral Sr/Ca record from Bonaire coral BON-13-AI.1, 125.8 ka (2016)

Brocas, William M ; Felis, Thomas ; Obert, J Christina ; [et al.]

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Publication Date: 2024-05-31

Keywords: BON-13-AI.1; Bonaire, Caribbean Netherlands; Calculated, see reference(s); Center for Marine Environmental Sciences; Diploria strigosa, Strontium/Calcium ratio; DRILL; Drilling/drill rig; ICP-OES, Perkin-Elmer, Optima 3300R; Integrierte Analyse zwischeneiszeitlicher Klimadynamik; INTERDYNAMIK; Internal coral chronology; MARUM

Type: Dataset

Format: text/tab-separated-values, 260 data points

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Stable hydrogen values of sedimentary terrestrial n-alkanes from sediment core GIK17286-1 (2022)

Wang, Yiming V ; Larsen, Thomas ; Lauterbach, Stefan ; [et al.]

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Publication Date: 2024-07-01

Keywords: AGE; Agilent 6890 GC coupled with a Thermo Finnigan MAT 253 isotope ratio mass (IRMS); Bay of Bengal; Bengal Sea Level; DEPTH, sediment/rock; GIK17286-1; Gravity corer (Kiel type); n-Alkane C27, δD; n-Alkane C27, δD, standard error; n-Alkane C29, δD; n-Alkane C29, δD, standard error; n-Alkane C31, δD; n-Alkane C31, δD, standard error; n-Alkane C33, δD; n-Alkane C33, δD, standard error; SL; SO188/1; Sonne

Type: Dataset

Format: text/tab-separated-values, 1050 data points

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