Pinho Tainã Marcos Lima taina.pinho@awi.de 0000-0001-6371-4498 Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 Nürnberg Dirk dnuernberg@geomar.de https://www.geomar.de/dnuernberg/ GEOMAR - Helmholtz Centre for Ocean Research Kiel GEOMAR http://www.geomar.de https://ror.org/02h2x0161 Meckler Anna Nele nele.meckler@uib.no http://www.climategeology.ethz.ch/people/nmeckler 0000-0002-7225-8276 Bjerknes Centre for Climate Research, Bergen, Norway BCCR http://www.bjerknes.uib.no/ https://ror.org/011n96f14 Mollenhauer Gesine gesine.mollenhauer@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/gesine-mollenhauer.html 0000-0001-5138-564X Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 Müller Juliane juliane.mueller@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/juliane-mueller.html 0000-0003-0724-4131 Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 Lohmann Gerrit gerrit.lohmann@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/gerrit-lohmann.html 0000-0003-2089-733X Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 Lembke-Jene Lester Lester.Lembke-Jene@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/lester-lembke-jene.html 0000-0002-6873-8533 Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 Hidayat Salma shidayat@uni-bremen.de University of Bremen Uni Bremen http://www.uni-bremen.de/en.html https://ror.org/04ers2y35 Rigalleau Vincent vincent.rigalleau@awi.de 0009-0006-3837-9679 Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 Lamy Frank frank.lamy@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/frank-lamy.html 0000-0001-5952-1765 Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 Tiedemann Ralf ralf.tiedemann@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/ralf-tiedemann.html 0000-0001-7211-8049 Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 2026 Mg/Ca-based subsurface temperature and ice volume-corrected δ18O of seawater based on Neogloboquadrina pachyderma sinistral from the eastern Weddell Sea off Dronning Maud Land over the last 75 ka dataset https://doi.pangaea.de/10.1594/PANGAEA.992006 2026-02-19T13:55:52 Mg/Ca-based subsurface temperature (°C) and ice volume-corrected δ18O of seawater (δ18Osw-ivc; ‰ VSMOW) based on Neogloboquadrina pachyderma sinistral from eastern Weddell Sea sediment core PS128_2. The foraminiferal specimens were selected from gravity core PS128_2-3, which was recovered from Bungenstock Plateau (eastern Weddell Sea off Dronning Maud Land 69.4107°S, 5.5890°W ) from 1868 m water depth during R/V POLASTERN Cruise PS128 in 2022 (Tiedemann and Müller, 2022). Sampling and analytical studies were carried out from ~88 to 430 cm core depth at ~2 cm spatial resolution. The records cover the last ~74.5 kyrs. The geochemical analyses were performed on a VARIAN 720–ES Axial ICP-OES, a simultaneous, axial-viewing inductively coupled plasma optical emission spectrometer coupled to a VARIAN SP3 sample preparation system at GEOMAR. Mg/Ca ratios (mmol/mol) were converted into subsurface temperature (SubST; °C) . Contaminant phases are added: Sr/Ca, Ba/Ca, Al/Ca, Fe/Ca, Mn/Ca in mmol/mol). Pinho Tainã Marcos Lima taina.pinho@awi.de 0000-0001-6371-4498 Nürnberg Dirk dnuernberg@geomar.de https://www.geomar.de/dnuernberg/ Meckler Anna Nele nele.meckler@uib.no http://www.climategeology.ethz.ch/people/nmeckler 0000-0002-7225-8276 Mollenhauer Gesine gesine.mollenhauer@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/gesine-mollenhauer.html 0000-0001-5138-564X Müller Juliane juliane.mueller@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/juliane-mueller.html 0000-0003-0724-4131 Lohmann Gerrit gerrit.lohmann@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/gerrit-lohmann.html 0000-0003-2089-733X Lembke-Jene Lester Lester.Lembke-Jene@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/lester-lembke-jene.html 0000-0002-6873-8533 Hidayat Salma shidayat@uni-bremen.de Rigalleau Vincent vincent.rigalleau@awi.de 0009-0006-3837-9679 Lamy Frank frank.lamy@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/frank-lamy.html 0000-0001-5952-1765 Tiedemann Ralf ralf.tiedemann@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/ralf-tiedemann.html 0000-0001-7211-8049 2026 Millennial-to-orbital-scale subsurface ocean warming and Polynya formation off Dronning Maud Land during the last glacial journal article Nature Communications 17(1) https://doi.org/10.1038/s41467-026-70498-w 2440 Tiedemann Ralf ralf.tiedemann@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/ralf-tiedemann.html 0000-0001-7211-8049 Müller Juliane juliane.mueller@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/juliane-mueller.html 0000-0003-0724-4131 2022 The Expedition PS128 of the Research Vessel POLARSTERN to the Weddell Sea, Lazarew Sea, Riiser-Larsen Sea, Cosmonaut Sea and Cooperation Sea in 2022 report Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research 764 https://doi.org/10.57738/BzPM_0764_2022 235 pp -5.587413 -5.587413 -69.411694 -69.411694 -5.587413 -69.411694 2022-01-17T00:54:00 2022-01-17T00:54:00 0.885 4.295 vertical profile AWI_INSPIRES International Science Program for Integrative Research in Earth Systems Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://doi.org/10.13039/501100003207 AWI_PS128_01 Marine Geology PS128_2-3 -69.411694 -5.587413 -1868.0 2022-01-17T00:54:00 https://registry.o2a-data.de/items/3165 Weddell Sea PS128 EASI-1 https://doi.org/10.57738/BzPM_0764_2022 Tiedemann, Ralf 2022-01-06 2022-02-28 Cape Town, South Africa Cape Town, South Africa 20210061 hdl:10013/epic.5f6c7ebb-86be-4277-a757-175baf6d916c https://www.awi.de/fileadmin/user_upload/MET/PolarsternExpeditionMaps/PS128.png doi:10.1594/PANGAEA.944833 Polarstern https://doi.org/10.17815/jlsrf-3-163 DBLK 8013132 Gravity corer GC 1797 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 Pinho Tainã Marcos Lima taina.pinho@awi.de 0000-0001-6371-4498 Depth sed [m] AGE Age ka BP http://en.wikipedia.org/wiki/Kyr age http://purl.obolibrary.org/obo/PATO_0000011 Time T http://dbpedia.org/resource/Time Pinho Tainã Marcos Lima taina.pinho@awi.de 0000-0001-6371-4498 Age [ka BP] Neogloboquadrina pachyderma, Magnesium/Calcium ratio N. pachyderma Mg/Ca mmol/mol Neogloboquadrina pachyderma https://www.marinespecies.org/aphia.php?p=taxdetails&id=113458 magnesium calcium Ca https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:22984 ratio Inductively coupled plasma-optical emission spectrometry (ICP-OES), Varian 720-ES Axial; coupled to a VARIAN SP3 sample preparation system Pinho Tainã Marcos Lima taina.pinho@awi.de 0000-0001-6371-4498 N. pachyderma Mg/Ca [mmol/mol] Neogloboquadrina pachyderma sinistral, Strontium/Calcium ratio N. pachyderma s Sr/Ca mmol/mol strontium calcium Ca https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:22984 ratio Inductively coupled plasma-optical emission spectrometry (ICP-OES), Varian 720-ES Axial; coupled to a VARIAN SP3 sample preparation system Pinho Tainã Marcos Lima taina.pinho@awi.de 0000-0001-6371-4498 N. pachyderma s Sr/Ca [mmol/mol] Neogloboquadrina pachyderma sinistral, Barium/Calcium ratio N. pachyderma sin B/Ca mmol/mol Inductively coupled plasma-optical emission spectrometry (ICP-OES), Varian 720-ES Axial; coupled to a VARIAN SP3 sample preparation system Pinho Tainã Marcos Lima taina.pinho@awi.de 0000-0001-6371-4498 N. pachyderma sin B/Ca [mmol/mol] Neogloboquadrina pachyderma sinistral, Aluminium/Calcium ratio N. pachyderma s Al/Ca mmol/mol aluminium Al calcium Ca https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:22984 ratio Inductively coupled plasma-optical emission spectrometry (ICP-OES), Varian 720-ES Axial; coupled to a VARIAN SP3 sample preparation system Pinho Tainã Marcos Lima taina.pinho@awi.de 0000-0001-6371-4498 N. pachyderma s Al/Ca [mmol/mol] Neogloboquadrina pachyderma sinistral, Iron/Calcium ratio N. pachyderma s Fe/Ca mmol/mol Iron https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=100628 calcium Ca https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:22984 ratio Inductively coupled plasma-optical emission spectrometry (ICP-OES), Varian 720-ES Axial; coupled to a VARIAN SP3 sample preparation system Pinho Tainã Marcos Lima taina.pinho@awi.de 0000-0001-6371-4498 N. pachyderma s Fe/Ca [mmol/mol] Neogloboquadrina pachyderma sinistral, Manganese/Calcium ratio N. pachyderma s Mn/Ca mmol/mol manganese Mn https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:18291 calcium Ca https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:22984 ratio Inductively coupled plasma-optical emission spectrometry (ICP-OES), Varian 720-ES Axial; coupled to a VARIAN SP3 sample preparation system Pinho Tainã Marcos Lima taina.pinho@awi.de 0000-0001-6371-4498 N. pachyderma s Mn/Ca [mmol/mol] Sub-surface temperature SubT °C Temperature Θ http://dbpedia.org/resource/Temperature Calculated from Mg/Ca ratios Pinho Tainã Marcos Lima taina.pinho@awi.de 0000-0001-6371-4498 SubT [°C] δ18O, ice volume free, seawater δ18O ivf sw ‰ SMOW seawater Calculated Pinho Tainã Marcos Lima taina.pinho@awi.de 0000-0001-6371-4498 δ18Osw-ivc δ18O ivf sw [‰ SMOW] CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels East Antarctica Eastern Weddell Sea Glacial Weddell Polynya Mg/Ca Neogloboquadrina pachyderma sinistral Warm Deep Water δ18Osw-ivc author107771 author10824 author10825 author114854 author20400 author20401 author27669 author29767 author35356 author69544 author89 award1895 basis1 campaign48082 curlevel30 event2999962 funder32 geocode1 geocode1599 geocode1600 geocode1601 geocode2205 geocode8128 inst2010 inst20147 inst20712 inst32 journal16572 journal16656 license21 method11107 method18765 method50 method6512 param116823 param120157 param500095 param526934 param526935 param526936 param526937 param555118 pi69544 project4852 ref115221 ref137919 term1045155 term1073131 term1073135 term2022952 term20356 term2663825 term38263 term38520 term38521 term40136 term40663 term40665 term41056 term41062 term43863 term43972 term43975 term47481 term50638 term77172 term77173 term77174 term77175 term77176 topotype3