Risebrobakken Bjørg bjri@norceresearch.no 0000-0002-7206-2193 NORCE Norwegian Research Centre AS NORCE https://www.norceresearch.no https://ror.org/02gagpf75 Blindheim Dag Inge dabl@norceresearch.no NORCE Norwegian Research Centre AS NORCE https://www.norceresearch.no https://ror.org/02gagpf75 2026 Benthic (Cassidulina neoteretis and Melonis barleeanus) oxygen isotope data from marine sediment core MD99-2304, the eastern Fram Strait, covering the time interval 33.7-40 kiloyears b2k dataset https://doi.org/10.1594/PANGAEA.993597 2026-04-29T12:19:50 We present a benthic oxygen isotopes dataset from marine sediment core MD99-2304. Core MD99-2304 was retrieved from the eastern Fram Strait (77°37'15.6N, 9°56'54E), with a CALYPSO piston corer, from 1348 m water depth during the Marion Dufresne IMAGES 5 expedition (leg MD114) in 1999. Measurements were done on the benthic foraminifera species Cassidulina neoteretis and Melonis barleeanus, in FARLAB at the Department of Earth Sciences, University of Bergen, using a MAT253 mass spectrometer coupled to a Kiel IV preparation line. Measurements were done between year 2022 and 2025. Results are calibrated to Vienna Pee Dee Belemnite (VPDB) using NBS 19 and NBS 18 and Carrara Marble (CM12) as a working standard. Oxygen isotope values for M. barleeanus are presented both as raw data and with a 0.4‰ disequilibrium correction. The results provide information on water mass characteristics of intermediate water in the eastern Fram strait. Wong Wanyee yunw@norceresearch.no 0000-0003-1066-6829 Risebrobakken Bjørg bjri@norceresearch.no 0000-0002-7206-2193 Fahl Kirsten kirsten.fahl@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/kirsten-fahl.html 0000-0001-9317-4656 Stein Ruediger ru_st@uni-bremen.de https://www.awi.de/en/about-us/organisation/staff/single-view/ruediger-stein.html 0000-0002-4453-9564 Jansen Eystein eystein.jansen@geo.uib.no 0000-0002-7383-5100 Steinsland Kristine kristine.steinsland@gmail.com 0000-0002-1276-0109 Kissel Catherine catherine.kissel@lsce.ipsl.fr 2024 Sea ice in the Nordic Seas: Greenland stadial to interstadial changes journal article Quaternary Science Reviews 343 https://doi.org/10.1016/j.quascirev.2024.108916 108916 Wong Wanyee yunw@norceresearch.no 0000-0003-1066-6829 Risebrobakken Bjørg bjri@norceresearch.no 0000-0002-7206-2193 Ödalen Malin malo@norceresearch.no Tisserand Amandine A Fahl Kirsten kirsten.fahl@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/kirsten-fahl.html 0000-0001-9317-4656 Stein Ruediger ru_st@uni-bremen.de https://www.awi.de/en/about-us/organisation/staff/single-view/ruediger-stein.html 0000-0002-4453-9564 Jansen Eystein eystein.jansen@geo.uib.no 0000-0002-7383-5100 2025 Ocean control on sea ice in the Nordic Seas journal article Climate of the Past 21(11) https://doi.org/10.5194/cp-21-2225-2025 2225-2242 9.9483333333333 9.9483333333333 77.621066666667 77.621066666667 9.9483333333333 77.621066666667 1999-08-01T00:00:00 1999-08-01T00:00:00 8.1325 9.7475 ABRUPT ABRUPT Arctic Climate Change https://www.norceresearch.no/en/projects/abrupt-arctic-climate-change The Research Council of Norway RCN http://www.forskningsradet.no/en/Home_page/1177315753906 https://doi.org/10.13039/501100005416 325333 Abrupt Arctic Climate Change https://prosjektbanken.forskningsradet.no/en/project/FORISS/325333 MD99-2304 3280N 77.621066666667 9.9483333333333 Spitsbergen slope -1348.0 1999-08-01T00:00:00 MD114 MD114 IMAGES V IMAGES V 1999-08-01T00:00:00 1999-08-01 1999-09-30T00:00:00 1999-09-30 Marion Dufresne (1995) https://en.wikipedia.org/wiki/Marion_Dufresne_(1994) FNIN 9050814 Labeyrie, Laurent D Labeyrie, Laurent D hdl:10013/epic.42867.d001 Marion Dufresne (1995) https://en.wikipedia.org/wiki/Marion_Dufresne_(1994) FNIN 9050814 Calypso Corer CALYPSO 22.885 m 723 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ DEPTH, sediment/rock Depth sed m depth http://purl.obolibrary.org/obo/PATO_0001595 sediment http://purl.obolibrary.org/obo/ENVO_00002007 rock Length L http://dbpedia.org/resource/Length Risebrobakken Bjørg bjri@norceresearch.no 0000-0002-7206-2193 Depth sed [m] Depth, corrected Depth corr m depth http://purl.obolibrary.org/obo/PATO_0001595 Length L http://dbpedia.org/resource/Length Risebrobakken Bjørg bjri@norceresearch.no 0000-0002-7206-2193 Depth corr [m] Age Age ka b2k age http://purl.obolibrary.org/obo/PATO_0000011 Risebrobakken Bjørg bjri@norceresearch.no 0000-0002-7206-2193 Age [ka b2k] Cassidulina neoteretis, δ18O C. neoteretis δ18O ‰ PDB Cassidulina neoteretis https://www.marinespecies.org/aphia.php?p=taxdetails&id=556408 δ18O http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes Finnigan MAT253 coupled to a Kiel IV preparation line Thermo Fisher Scientific MAT 253 isotope ratio mass spectrometer http://vocab.nerc.ac.uk/collection/L22/current/TOOL2142/ Risebrobakken Bjørg bjri@norceresearch.no 0000-0002-7206-2193 vs VPDB C. neoteretis δ18O [‰ PDB] (vs VPDB, Finnigan MAT253 coup...) Melonis barleeanus, δ18O M. barleeanus δ18O ‰ PDB http://www.marinespecies.org/aphia.php?p=taxdetails&id=113563 Melonis barleeanus https://www.marinespecies.org/aphia.php?p=taxdetails&id=113563 δ18O http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes Finnigan MAT253 coupled to a Kiel IV preparation line Thermo Fisher Scientific MAT 253 isotope ratio mass spectrometer http://vocab.nerc.ac.uk/collection/L22/current/TOOL2142/ Risebrobakken Bjørg bjri@norceresearch.no 0000-0002-7206-2193 vs VPDB M. barleeanus δ18O [‰ PDB] (vs VPDB, Finnigan MAT253 coup...) Melonis barleeanus, δ18O M. barleeanus δ18O ‰ PDB http://www.marinespecies.org/aphia.php?p=taxdetails&id=113563 Melonis barleeanus https://www.marinespecies.org/aphia.php?p=taxdetails&id=113563 δ18O http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes Corrected Risebrobakken Bjørg bjri@norceresearch.no 0000-0002-7206-2193 corr 0.4‰, vs VPDB M. barleeanus δ18O [‰ PDB] (corr 0.4‰, vs VPDB, Corrected) CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels citable Arctic benthic d18O Benthic oxygen isotopes Cassidulina neoteretis Dansgaard-Oeschger events Fram Strait Melonis barleeanus MIS 3 author110414 author113001 author116892 author118 author22687 author28157 author517 author558 author97706 author98014 award3198 basis94 campaign21508 campaign3373591 curlevel30 event2025719 funder20398 geocode1 geocode1599 geocode1600 geocode1601 geocode8128 inst20696 journal13626 journal17491 license21 method10861 method14125 method7048 param135115 param151374 param16164 param96066 pi28157 project4940 ref126893 ref132566 term1045453 term1045869 term1073093 term1073131 term1073135 term21650 term38263 term4047470 term40892 term41056 term43863 term47746 term50029 term50836 term52483 term60687 term68834 term77433