Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 University of Helsinki UH http://www.helsinki.fi/university/ https://ror.org/040af2s02 Papadimitriou Stathys 0000-0001-8540-1169 National Oceanography Centre, Southampton NOCS http://www.soc.soton.ac.uk/ https://ror.org/00874hx02 2026 Sea ice brine biogeochemistry measured during RV POLARSTERN cruise ANT-XXII aka ISPOL in 2004/05 dataset https://doi.org/10.1594/PANGAEA.990321 2026-02-18T07:23:19 During the ISPOL expedition of RV Polarstern in 2004/05 sea ice brine samples (from sackhole sampling) were routinely taken. Subsequent analyses included pH, temperature, salinity, dissolved inorganic and organic (DOC & DON) nutrients (nitrite, nitrate, ammonium, phosphate, silicate), dissolved oxygen, alkalinity, 13C of DIC, chlorophyll, Particulate organic carbon and nitrogen. El Naggar Saad El Dine saad.el.naggar@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/saad-el-dine-el-naggar.html Dieckmann Gerhard S gerhard.dieckmann@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/gerhard-dieckmann.html Haas Christian christian.haas@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/christian-haas.html 0000-0002-7674-3500 Schröder Michael michael.schroeder@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/michael-schroeder.html Spindler Michael 2007 The Expeditions ANTARKTIS-XXII/1 and XXII/2 of the Research Vessel Polarstern in 2004/2005 report Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research 551 https://doi.org/10.2312/BzPM_0551_2007 259 pp Papadimitriou Stathys 0000-0001-8540-1169 Kennedy Hilary Krell Andreas andreas.krell@awi.de 2007 Biogeochemical composition of natural sea ice brines from the Weddell Sea during early austral summer journal article Limnology and Oceanography 52(5) https://doi.org/10.4319/lo.2007.52.5.1809 1809-1823 Underwood Graham J C 0000-0001-5605-0697 Aslam Shazia N Michel Christine michelc@dfo-mpo.gc.ca 0000-0001-8056-0160 Niemi Andrea Andrea.Niemi@dfo-mpo.gc.ca Norman Louiza Meiners Klaus M klaus.meiners@aad.gov.au http://www.antarctica.gov.au/science/meet-our-scientists/dr-klaus-meiners Laybourn-Parry Johanna Paterson Harriet Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 2013 Broad-scale predictability of carbohydrates and exopolymers in Antarctic and Arctic sea ice journal article Proceedings of the National Academy of Sciences of the United States of America 110(39) https://doi.org/10.1073/pnas.1302870110 15734-15739 -55.58470999999997 -54.89028000000002 -68.18554 -67.56463 -55.18318923076902 -68.02502999999997 2004-12-01T12:00:00 2004-12-29T12:00:00 0.2 0.93 ANT-XXII/2_drift-04 -68.17265 -54.89028 Weddell Sea 2004-12-01T12:00:00 ANT-XXII/2 ANT-XXII/2 PS67 ISPOL PS67 ISPOL Cape Town, South Africa 2004-11-06T00:00:00 2004-11-06 Cape Town, South Africa 2005-01-19T00:00:00 2005-01-19 Polarstern https://doi.org/10.17815/jlsrf-3-163 DBLK 8013132 Spindler, Michael Spindler, Michael doi:10.2312/BzPM_0551_2007 20050008 hdl:10013/epic.37255.d001 http://www.awi.de/fileadmin/user_upload/MET/PolarsternExpeditionMaps/ANT-XXII-2.png hdl:10013/epic.44527.d001 doi:10.1594/PANGAEA.847870 Polarstern https://doi.org/10.17815/jlsrf-3-163 DBLK 8013132 Ice station ICE ANT-XXII/2_drift-05 -68.18554 -55.11259 Weddell Sea 2004-12-02T12:00:00 ANT-XXII/2 ANT-XXII/2 PS67 ISPOL PS67 ISPOL Cape Town, South Africa 2004-11-06T00:00:00 2004-11-06 Cape Town, South Africa 2005-01-19T00:00:00 2005-01-19 Polarstern https://doi.org/10.17815/jlsrf-3-163 DBLK 8013132 Spindler, Michael Spindler, Michael doi:10.2312/BzPM_0551_2007 20050008 hdl:10013/epic.37255.d001 http://www.awi.de/fileadmin/user_upload/MET/PolarsternExpeditionMaps/ANT-XXII-2.png hdl:10013/epic.44527.d001 doi:10.1594/PANGAEA.847870 Polarstern https://doi.org/10.17815/jlsrf-3-163 DBLK 8013132 Ice station ICE ANT-XXII/2_drift-08 -68.11404 -55.25898 Weddell Sea 2004-12-05T12:00:00 ANT-XXII/2 ANT-XXII/2 PS67 ISPOL PS67 ISPOL Cape Town, South Africa 2004-11-06T00:00:00 2004-11-06 Cape Town, South Africa 2005-01-19T00:00:00 2005-01-19 Polarstern https://doi.org/10.17815/jlsrf-3-163 DBLK 8013132 Spindler, Michael Spindler, Michael doi:10.2312/BzPM_0551_2007 20050008 hdl:10013/epic.37255.d001 http://www.awi.de/fileadmin/user_upload/MET/PolarsternExpeditionMaps/ANT-XXII-2.png hdl:10013/epic.44527.d001 doi:10.1594/PANGAEA.847870 Polarstern https://doi.org/10.17815/jlsrf-3-163 DBLK 8013132 Ice station ICE ANT-XXII/2_drift-11 -68.06012 -55.29073 Weddell Sea 2004-12-08T12:00:00 ANT-XXII/2 ANT-XXII/2 PS67 ISPOL PS67 ISPOL Cape Town, South Africa 2004-11-06T00:00:00 2004-11-06 Cape Town, South Africa 2005-01-19T00:00:00 2005-01-19 Polarstern https://doi.org/10.17815/jlsrf-3-163 DBLK 8013132 Spindler, Michael Spindler, Michael doi:10.2312/BzPM_0551_2007 20050008 hdl:10013/epic.37255.d001 http://www.awi.de/fileadmin/user_upload/MET/PolarsternExpeditionMaps/ANT-XXII-2.png hdl:10013/epic.44527.d001 doi:10.1594/PANGAEA.847870 Polarstern https://doi.org/10.17815/jlsrf-3-163 DBLK 8013132 Ice station ICE ANT-XXII/2_drift-17 -67.81713 -55.40331 Weddell Sea 2004-12-14T12:00:00 ANT-XXII/2 ANT-XXII/2 PS67 ISPOL PS67 ISPOL Cape Town, South Africa 2004-11-06T00:00:00 2004-11-06 Cape Town, South Africa 2005-01-19T00:00:00 2005-01-19 Polarstern https://doi.org/10.17815/jlsrf-3-163 DBLK 8013132 Spindler, Michael Spindler, Michael doi:10.2312/BzPM_0551_2007 20050008 hdl:10013/epic.37255.d001 http://www.awi.de/fileadmin/user_upload/MET/PolarsternExpeditionMaps/ANT-XXII-2.png hdl:10013/epic.44527.d001 doi:10.1594/PANGAEA.847870 Polarstern https://doi.org/10.17815/jlsrf-3-163 DBLK 8013132 Ice station ICE ANT-XXII/2_drift-20 -67.77158 -55.36401 Weddell Sea 2004-12-17T12:00:00 ANT-XXII/2 ANT-XXII/2 PS67 ISPOL PS67 ISPOL Cape Town, South Africa 2004-11-06T00:00:00 2004-11-06 Cape Town, South Africa 2005-01-19T00:00:00 2005-01-19 Polarstern https://doi.org/10.17815/jlsrf-3-163 DBLK 8013132 Spindler, Michael Spindler, Michael doi:10.2312/BzPM_0551_2007 20050008 hdl:10013/epic.37255.d001 http://www.awi.de/fileadmin/user_upload/MET/PolarsternExpeditionMaps/ANT-XXII-2.png hdl:10013/epic.44527.d001 doi:10.1594/PANGAEA.847870 Polarstern https://doi.org/10.17815/jlsrf-3-163 DBLK 8013132 Ice station ICE ANT-XXII/2_drift-26 -67.8118 -55.58471 Weddell Sea 2004-12-23T12:00:00 ANT-XXII/2 ANT-XXII/2 PS67 ISPOL PS67 ISPOL Cape Town, South Africa 2004-11-06T00:00:00 2004-11-06 Cape Town, South Africa 2005-01-19T00:00:00 2005-01-19 Polarstern https://doi.org/10.17815/jlsrf-3-163 DBLK 8013132 Spindler, Michael Spindler, Michael doi:10.2312/BzPM_0551_2007 20050008 hdl:10013/epic.37255.d001 http://www.awi.de/fileadmin/user_upload/MET/PolarsternExpeditionMaps/ANT-XXII-2.png hdl:10013/epic.44527.d001 doi:10.1594/PANGAEA.847870 Polarstern https://doi.org/10.17815/jlsrf-3-163 DBLK 8013132 Ice station ICE ANT-XXII/2_drift-32 -67.56463 -55.3467 Weddell Sea 2004-12-29T12:00:00 ANT-XXII/2 ANT-XXII/2 PS67 ISPOL PS67 ISPOL Cape Town, South Africa 2004-11-06T00:00:00 2004-11-06 Cape Town, South Africa 2005-01-19T00:00:00 2005-01-19 Polarstern https://doi.org/10.17815/jlsrf-3-163 DBLK 8013132 Spindler, Michael Spindler, Michael doi:10.2312/BzPM_0551_2007 20050008 hdl:10013/epic.37255.d001 http://www.awi.de/fileadmin/user_upload/MET/PolarsternExpeditionMaps/ANT-XXII-2.png hdl:10013/epic.44527.d001 doi:10.1594/PANGAEA.847870 Polarstern https://doi.org/10.17815/jlsrf-3-163 DBLK 8013132 Ice station ICE 755 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Event label Event Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 Event DATE/TIME Date/Time http://en.wikipedia.org/wiki/ISO_8601 Time T http://dbpedia.org/resource/Time Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 Date/Time LATITUDE Latitude http://en.wikipedia.org/wiki/ISO_6709 Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 Latitude LONGITUDE Longitude http://en.wikipedia.org/wiki/ISO_6709 Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 Longitude Sample ID Sample ID Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 Sample ID DEPTH, ice/snow Depth ice/snow m depth http://purl.obolibrary.org/obo/PATO_0001595 ice http://purl.obolibrary.org/obo/ENVO_01000277 snow Length L http://dbpedia.org/resource/Length Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 sackhole depth which is measured from the top of the ice to bottom of the sackhole Depth ice/snow [m] Temperature, brine T brine °C Temperature Θ http://dbpedia.org/resource/Temperature brine http://purl.obolibrary.org/obo/ENVO_00003044 Thermometer, HANNA Instruments, HI93530 [calibrated K-Thermocouple probe] water temperature sensor http://vocab.nerc.ac.uk/collection/L05/current/134/ Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 T brine [°C] Salinity Sal salinity http://purl.obolibrary.org/obo/PATO_0085001 Conductivity meter, SEMAT, Cond 315i/SET; measured with conductivity probe, WTW, TetraCon 325 Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 Sal Phosphate [PO4]3- µmol/kg phosphate http://purl.obolibrary.org/obo/CHEBI_26020 Molar Concentration Flow injection analyzer, Lachat Instruments, QuikChem 8000 Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 [PO4]3- [µmol/kg] Silicate Si(OH)4 µmol/kg Molar Concentration Flow injection analyzer, Lachat Instruments, QuikChem 8000 Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 Si(OH)4 [µmol/kg] Nitrite [NO2]- µmol/kg nitrite http://purl.obolibrary.org/obo/CHEBI_16301 Molar Concentration Flow injection analyzer, Lachat Instruments, QuikChem 8000 Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 [NO2]- [µmol/kg] Nitrate and Nitrite [NO3]- + [NO2]- µmol/kg nitrate http://purl.obolibrary.org/obo/CHEBI_17632 nitrite http://purl.obolibrary.org/obo/CHEBI_16301 Molar Concentration Flow injection analyzer, Lachat Instruments, QuikChem 8000 Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 [NO3]- + [NO2]- [µmol/kg] Ammonium [NH4]+ µmol/kg ammonium http://purl.obolibrary.org/obo/CHEBI_28938 Molar Concentration Fluorescence spectrophotometer, Hitachi, F-2000 Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 [NH4]+ [µmol/kg] Carbon, organic, dissolved DOC µmol/kg carbon C https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:27594 organic dissolved http://purl.obolibrary.org/obo/PATO_0001986 Molar Concentration TOC analyzer, MQ 1001 Chemical property sensors elemental analysers http://vocab.nerc.ac.uk/collection/L05/current/LAB01/ Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 DOC [µmol/kg] Nitrogen, organic, dissolved DON µmol/kg nitrogen N https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:25555 organic dissolved http://purl.obolibrary.org/obo/PATO_0001986 Molar Concentration Flow injection analyser, Lachat Instruments flow injection analysers http://vocab.nerc.ac.uk/collection/L05/current/LAB36/ Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 determined by subtraction of NO3 and NH4 from the total dissolved nitrogen (TDN) analyzed by FIA on the LACHAT autoanalyzer using on-line peroxodisulfate oxidation coupled with ultraviolet radiation at pH 9.0 and 100°C DON [µmol/kg] Chlorophyll a Chl a µg/l hdl:10013/epic.32187.d001 chlorophyll a http://purl.obolibrary.org/obo/CHEBI_18230 Density http://dbpedia.org/resource/Density Fluorometer, Turner Design, TD-700 Optical tools & radiometric sensors Turner Designs 700 Laboratory Fluorometer http://vocab.nerc.ac.uk/collection/L22/current/TOOL0510/ Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 samples filtered (precombusted GF/F), extracted in 90% acetone and analysed on fluorometer Chl a [µg/l] Phaeopigments Phae µg/l Density http://dbpedia.org/resource/Density Fluorometer, Turner Design, TD-700 Optical tools & radiometric sensors Turner Designs 700 Laboratory Fluorometer http://vocab.nerc.ac.uk/collection/L22/current/TOOL0510/ Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 samples filtered (precombusted GF/F), extracted in 90% acetone, acidified and analysed on fluorometer Phae [µg/l] Oxygen O2 µmol/kg oxygen O https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:25805 Molar Concentration Winkler titration with photometric end-point detection Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 O2 [µmol/kg] pH pH pH meter (Metrohm electrodes) Chemical property sensors pH sensors http://vocab.nerc.ac.uk/collection/L05/current/355/ Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 measured at laboratory temperature with a Metrohm pH meter, platinum temperature probe, Ag/AgCl reference electrode, and glass indicator electrode calibrated daily with NBS standards pH Alkalinity, total AT µmol/kg total https://www.oxforddictionaries.com/definition/american_english/total Molar Concentration Potentiometric titration Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 potentiometric titration with 0.05 N HCl (Titrisol) using a Metrohm system of automatic burette, pH meter, platinum temperature probe, Ag/AgCl reference electrode, and glass indicator electrode calibrated daily with NBS standards AT [µmol/kg] Carbon, inorganic, dissolved DIC µmol/kg carbon C https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:27594 dissolved http://purl.obolibrary.org/obo/PATO_0001986 Molar Concentration Vacuum line manometer, Chell instruments Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 determined following in vacuo reaction with 85% H3PO4 and cryogenic CO2 gas distillation using an in-line manometer DIC [µmol/kg] δ13C, dissolved inorganic carbon δ13C DIC ‰ PDB δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes dissolved inorganic carbon DIC Isotope ratio mass spectrometer, PDZ Europa Ltd., 20-20 PDZ Europa 20-20 isotope ratio mass spectrometer http://vocab.nerc.ac.uk/collection/L22/current/TOOL0944/ Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 determined on a mass spectrometer on the cryo-distilled total sample CO2 collected following in-line manometric dissolved inorganic carbon determination δ13C DIC [‰ PDB] Carbon, organic, particulate POC µmol/l carbon C https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:27594 organic particulate Molar Concentration CN analyzer, Europa Scientific Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 samples filtered (precombusted GF/F) and acidified and dried. Filters analysed with a CN analyser, using acetanilide as a standard POC [µmol/l] Nitrogen, organic, particulate PON µmol/l nitrogen N https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:25555 organic particulate Molar Concentration CN analyzer, Europa Scientific Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 samples filtered (precombusted GF/F) and acidified and dried. Filters analysed with a CN analyser, using acetanilide as a standard PON [µmol/l] Carbon, organic, particulate/Nitrogen, organic, particulate ratio POC/PON mol/mol carbon C https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:27594 organic particulate nitrogen N https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:25555 ratio Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 POC/PON [mol/mol] δ13C, particulate organic carbon δ13C POC ‰ PDB δ13C http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes particulate organic carbon POC Mass spectrometer, VG SIRA II and Mass spectrometer, PDZ Europa Ltd. Chromatographs & spectrometers mass spectrometers http://vocab.nerc.ac.uk/collection/L05/current/LAB16/ Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 samples filtered (precombusted GF/F), acidified and dried. The Isotopic measurements of carbon were determined on CO2 generated by vacuum combusion and isotopes measured using VG SIRA II and PDZ-EUROPA 20/20 isotope ratio mass spectrometers δ13C POC [‰ PDB] δ15N, particulate organic nitrogen δ15N PON ‰ air δ15N http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes particulate organic nitrogen PON Mass spectrometer, VG SIRA II Chromatographs & spectrometers mass spectrometers http://vocab.nerc.ac.uk/collection/L05/current/LAB16/ Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 samples filtered (precombusted GF/F), dried and dessicated. The Isotopic measurements of nitrogen were determined on N2 generated by vacuum combusion. Isotopes measured on a SIRA VG II mass spectrometer δ15N PON [‰ air] δ18O, ice δ18O ice ‰ SMOW δ18O http://en.wikipedia.org/wiki/List_of_elements_by_stability_of_isotopes ice http://purl.obolibrary.org/obo/ENVO_01000277 Isotope ratio mass spectrometer, PDZ Europa Ltd., 20-20 PDZ Europa 20-20 isotope ratio mass spectrometer http://vocab.nerc.ac.uk/collection/L22/current/TOOL0944/ Thomas David Neville david.thomas@helsinki.fi 0000-0001-8832-5907 was conducted by off-line equilibration with CO2 and subsequent measurement of the oxygen isotope ratios using a PDZ–EUROPA GEO 20/20 mass spectrometer, with normalisation relative to North Sea seawater δ18O ice [‰ SMOW] CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels ProcLevel3 PANGAEA data processing level 3 https://wiki.pangaea.de/wiki/Processing_levels#PANGAEA_data_processing_level_3 citable biogeochemical data brine Sea ice Weddell Sea author10139 author10161 author10407 author10730 author114686 author114687 author114688 author27901 author31780 author31781 author35686 author45425 author48459 author65545 author78 author909 author99302 basis1 campaign24898 campaign3390872 curlevel30 event2653637 event2653638 event2653641 event2653644 event2653650 event2653653 event2653659 event2653665 geocode1599 geocode1600 geocode1601 geocode5059 inst20060 inst64 journal10608 journal13288 journal16572 license21 method11166 method15897 method16280 method16569 method18711 method18712 method18713 method18739 method18740 method18742 method18743 method18744 method18745 method6926 method8475 method8699 param143492 param16065 param18664 param18846 param2136 param32633 param4677 param539403 param716 param764 param770 param79734 param80103 param80104 param80106 param80107 param80114 param80119 param80128 param82110 param87073 param87076 param91515 pi27901 proclevel40 ref137689 ref137690 ref27665 term1073089 term1073092 term1073093 term1073131 term1073173 term1073200 term1073482 term1073483 term1073484 term1073493 term1073594 term1074586 term20356 term2299468 term2299473 term2299515 term2299532 term2299603 term2300452 term2300888 term2663825 term2687881 term2698012 term30188 term38253 term38338 term38477 term38494 term38548 term40024 term40625 term40694 term43792 term43863 term43972 term43975 term44030 term44363 term44419 term47389 term47873 term52044 term67625 term67649 term68027