Verdugo Josefa Josefa.verdugo@bio.au.dk 0000-0003-0121-1582 Center for Ice-Free Arctic Research CIFAR https://bio.au.dk/forskning/forskningscentre/cifar Farías Laura laura.farias@udec.cl 0000-0002-9479-1557 Departamento de Oceanografía. Facultad de Ciencias Naturales y Oceanográficas https://ror.org/0460jpj73 2026 Dissolved methane concentrations in seawater during Lomrog III cruise, Arctic Ocean dataset https://doi.org/10.1594/PANGAEA.993688 2026-04-22T06:01:34 The concentration of methane (CH4), along with temperature and salinity, were measured in the ice- covered Arctic Ocean within the Eurasian Basin (Verdugo et al., 2016; doi:10.1016/j.dsr.2016.08.016). The transect was conducted across the Nansen-Gakkel Ridge, from the Nansen Basin to the Amundsen Basin, covering depths from the surface (10 m) down to 4300 m. All sampling stations, except for ST 12, were covered by sea ice. Water samples were collected with a CTD-rosette sampler equipped with 24 Niskin Bottles. Gas sampling was carried out directly from 12 L Niskin bottles. Triplicate water samples for CH4 analyses were taken in 20 mL glass vials and preserved with 50 µL of saturated HgCl2. The vials were then sealed with a butyl-rubber septum and an aluminum cap to prevent bubble formation and stored in darkness at room temperature until laboratory analysis. CH4 concentrations were analyzed by creating 5 mL of ultra-pure helium headspace, followed by equilibration in the vial, and then quantified with a gas chromatograph (GC). A Varian 3380 GC, equipped with flame ionization detector (FID) maintained at 250 °C, and a capillary column GS-Q operated at 30 °C was used for analysis. A calibration curve was made with three standard concentrations for CH4 (1, 5, and 10 ppm, provided by Scotty Standards) and dry air. Farías Laura laura.farias@udec.cl 0000-0002-9479-1557 Verdugo Josefa Josefa.verdugo@bio.au.dk 0000-0003-0121-1582 2025 Nitrous oxide in seawater during Lomrog III cruise, Arctic Ocean (2012) dataset https://doi.org/10.1594/PANGAEA.977808 Marcussen Christian cma@geus.dk 0000-0001-8845-2615 2012 Lomonosov Ridge off Greenland 2012 (LOMROG III) - Cruise Report report Geological Survey of Denmark and Greenland, Danish Ministry of Climate and Energy hdl:10013/epic.45351.d001 222 pp Stratmann Tanja tanja.stratmann@nioz.nl 0000-0001-7997-1157 Lund-Hansen Lars Chresten 0000-0001-5925-322X Sorrell Brian K 0000-0002-2460-8438 Markager Stiig 0000-0001-5427-2026 2018 Concentrations of organic and inorganic nutrients and chlorophyll-a during cruise LOMROG III in the central Arctic Ocean dataset https://doi.org/10.1594/PANGAEA.896134 Stratmann Tanja tanja.stratmann@nioz.nl 0000-0001-7997-1157 Lund-Hansen Lars Chresten 0000-0001-5925-322X Sorrell Brian K 0000-0002-2460-8438 Markager Stiig 0000-0001-5427-2026 2017 Concentrations of organic and inorganic bound nutrients and chlorophyll a in the Eurasian Basin, Arctic Ocean, early autumn 2012 journal article Regional Studies in Marine Science 9 https://doi.org/10.1016/j.rsma.2016.11.008 69-75 Verdugo Josefa Josefa.verdugo@bio.au.dk 0000-0003-0121-1582 Damm Ellen ellen.damm@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/ellen-damm.html 0000-0002-1487-1283 Snoeijs P Díez Beatriz 0000-0002-9371-8083 Farías Laura laura.farias@udec.cl 0000-0002-9479-1557 2016 Climate relevant trace gases (N2O and CH4) in the Eurasian Basin (Arctic Ocean) journal article Deep Sea Research Part I: Oceanographic Research Papers 117 https://doi.org/10.1016/j.dsr.2016.08.016 84-94 -69.4115 78.242667 82.195833 89.265 2.49047225 85.88394449999998 2012-08-02T11:35:00 2012-09-11T09:30:00 9.628 4350.0 vertical profile Swedish Research Council VR https://doi.org/10.13039/501100004359 SWEDARCTIC 2011-2015 Swedish Research Council for Environment Agricultural Sciences and Spatial Planning FORMAS https://doi.org/10.13039/501100001862 2012-1459 LR12s01 82.958 14.933 Arctic Ocean 2012-08-02T11:35:00 LOMROG-III LOMROG-III Longyearbyen, Svalbard and Jan Mayen 2012-07-31T00:00:00 2012-07-31 Longyearbyen, Svalbard and Jan Mayen 2012-09-14T00:00:00 2012-09-14 Oden Marcussen, Christian Marcussen, Christian hdl:10013/epic.45351.d001 Oden CTD/Rosette CTD-RO CTD http://vocab.nerc.ac.uk/collection/L05/current/130/ CTD & XBT Water samplers Ship LR12s02 86.743167 1.955167 Arctic Ocean 2012-08-05T17:03:00 LOMROG-III LOMROG-III Longyearbyen, Svalbard and Jan Mayen 2012-07-31T00:00:00 2012-07-31 Longyearbyen, Svalbard and Jan Mayen 2012-09-14T00:00:00 2012-09-14 Oden Marcussen, Christian Marcussen, Christian hdl:10013/epic.45351.d001 Oden CTD/Rosette CTD-RO CTD http://vocab.nerc.ac.uk/collection/L05/current/130/ CTD & XBT Water samplers Ship LR12s03 87.77 -37.7575 Arctic Ocean 2012-08-09T13:09:00 LOMROG-III LOMROG-III Longyearbyen, Svalbard and Jan Mayen 2012-07-31T00:00:00 2012-07-31 Longyearbyen, Svalbard and Jan Mayen 2012-09-14T00:00:00 2012-09-14 Oden Marcussen, Christian Marcussen, Christian hdl:10013/epic.45351.d001 Oden CTD/Rosette CTD-RO CTD http://vocab.nerc.ac.uk/collection/L05/current/130/ CTD & XBT Water samplers Ship LR12s04 88.346667 -69.4115 Arctic Ocean 2012-08-16T05:10:00 LOMROG-III LOMROG-III Longyearbyen, Svalbard and Jan Mayen 2012-07-31T00:00:00 2012-07-31 Longyearbyen, Svalbard and Jan Mayen 2012-09-14T00:00:00 2012-09-14 Oden Marcussen, Christian Marcussen, Christian hdl:10013/epic.45351.d001 Oden CTD/Rosette CTD-RO CTD http://vocab.nerc.ac.uk/collection/L05/current/130/ CTD & XBT Water samplers Ship LR12s05 89.265 -58.847167 Arctic Ocean 2012-08-20T05:10:00 LOMROG-III LOMROG-III Longyearbyen, Svalbard and Jan Mayen 2012-07-31T00:00:00 2012-07-31 Longyearbyen, Svalbard and Jan Mayen 2012-09-14T00:00:00 2012-09-14 Oden Marcussen, Christian Marcussen, Christian hdl:10013/epic.45351.d001 Oden CTD/Rosette CTD-RO CTD http://vocab.nerc.ac.uk/collection/L05/current/130/ CTD & XBT Water samplers Ship LR12s06 88.149333 78.242667 Arctic Ocean 2012-08-27T11:21:00 LOMROG-III LOMROG-III Longyearbyen, Svalbard and Jan Mayen 2012-07-31T00:00:00 2012-07-31 Longyearbyen, Svalbard and Jan Mayen 2012-09-14T00:00:00 2012-09-14 Oden Marcussen, Christian Marcussen, Christian hdl:10013/epic.45351.d001 Oden CTD/Rosette CTD-RO CTD http://vocab.nerc.ac.uk/collection/L05/current/130/ CTD & XBT Water samplers Ship LR12s07 88.7905 53.103 Arctic Ocean 2012-08-31T13:56:00 LOMROG-III LOMROG-III Longyearbyen, Svalbard and Jan Mayen 2012-07-31T00:00:00 2012-07-31 Longyearbyen, Svalbard and Jan Mayen 2012-09-14T00:00:00 2012-09-14 Oden Marcussen, Christian Marcussen, Christian hdl:10013/epic.45351.d001 Oden CTD/Rosette CTD-RO CTD http://vocab.nerc.ac.uk/collection/L05/current/130/ CTD & XBT Water samplers Ship LR12s08 85.4265 5.277167 Arctic Ocean 2012-09-07T06:44:00 LOMROG-III LOMROG-III Longyearbyen, Svalbard and Jan Mayen 2012-07-31T00:00:00 2012-07-31 Longyearbyen, Svalbard and Jan Mayen 2012-09-14T00:00:00 2012-09-14 Oden Marcussen, Christian Marcussen, Christian hdl:10013/epic.45351.d001 Oden CTD/Rosette CTD-RO CTD http://vocab.nerc.ac.uk/collection/L05/current/130/ CTD & XBT Water samplers Ship LR12s09 84.370167 3.7215 Arctic Ocean 2012-09-08T07:36:00 LOMROG-III LOMROG-III Longyearbyen, Svalbard and Jan Mayen 2012-07-31T00:00:00 2012-07-31 Longyearbyen, Svalbard and Jan Mayen 2012-09-14T00:00:00 2012-09-14 Oden Marcussen, Christian Marcussen, Christian hdl:10013/epic.45351.d001 Oden CTD/Rosette CTD-RO CTD http://vocab.nerc.ac.uk/collection/L05/current/130/ CTD & XBT Water samplers Ship LR12s10 LR12S10 83.8235 15.172833 Arctic Ocean 2012-09-09T06:46:00 LOMROG-III LOMROG-III Longyearbyen, Svalbard and Jan Mayen 2012-07-31T00:00:00 2012-07-31 Longyearbyen, Svalbard and Jan Mayen 2012-09-14T00:00:00 2012-09-14 Oden Marcussen, Christian Marcussen, Christian hdl:10013/epic.45351.d001 Oden CTD/Rosette CTD-RO CTD http://vocab.nerc.ac.uk/collection/L05/current/130/ CTD & XBT Water samplers Ship LR12s11 LR12S11 82.768667 14.7445 Arctic Ocean 2012-09-10T06:23:00 LOMROG-III LOMROG-III Longyearbyen, Svalbard and Jan Mayen 2012-07-31T00:00:00 2012-07-31 Longyearbyen, Svalbard and Jan Mayen 2012-09-14T00:00:00 2012-09-14 Oden Marcussen, Christian Marcussen, Christian hdl:10013/epic.45351.d001 Oden CTD/Rosette CTD-RO CTD http://vocab.nerc.ac.uk/collection/L05/current/130/ CTD & XBT Water samplers Ship LR12s12 LR12S12 82.195833 8.752 Arctic Ocean 2012-09-11T06:16:00 LOMROG-III LOMROG-III Longyearbyen, Svalbard and Jan Mayen 2012-07-31T00:00:00 2012-07-31 Longyearbyen, Svalbard and Jan Mayen 2012-09-14T00:00:00 2012-09-14 Oden Marcussen, Christian Marcussen, Christian hdl:10013/epic.45351.d001 Oden CTD/Rosette CTD-RO CTD http://vocab.nerc.ac.uk/collection/L05/current/130/ CTD & XBT Water samplers Ship 385 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Event label Event Verdugo Josefa Josefa.verdugo@bio.au.dk 0000-0003-0121-1582 Event Latitude of event Latitude Verdugo Josefa Josefa.verdugo@bio.au.dk 0000-0003-0121-1582 Latitude Longitude of event Longitude Verdugo Josefa Josefa.verdugo@bio.au.dk 0000-0003-0121-1582 Longitude DATE/TIME Date/Time http://en.wikipedia.org/wiki/ISO_8601 Time T http://dbpedia.org/resource/Time Verdugo Josefa Josefa.verdugo@bio.au.dk 0000-0003-0121-1582 Date/Time DEPTH, water Depth water m depth http://purl.obolibrary.org/obo/PATO_0001595 water http://purl.obolibrary.org/obo/CHEBI_15377 Length L http://dbpedia.org/resource/Length CTD/Rosette CTD-RO CTD http://vocab.nerc.ac.uk/collection/L05/current/130/ CTD & XBT Water samplers Verdugo Josefa Josefa.verdugo@bio.au.dk 0000-0003-0121-1582 Depth water [m] Methane CH4 nmol/l methane http://purl.obolibrary.org/obo/CHEBI_16183 Molar Concentration Gas chromatograph, Varian Inc., 3380 gas chromatographs http://vocab.nerc.ac.uk/collection/L05/current/LAB02/ Varian 3800 gas chromatograph http://vocab.nerc.ac.uk/collection/L22/current/TOOL0970/ Verdugo Josefa Josefa.verdugo@bio.au.dk 0000-0003-0121-1582 CH4 [nmol/l] Salinity Sal salinity http://purl.obolibrary.org/obo/PATO_0085001 CTD/Rosette CTD-RO CTD http://vocab.nerc.ac.uk/collection/L05/current/130/ CTD & XBT Water samplers Verdugo Josefa Josefa.verdugo@bio.au.dk 0000-0003-0121-1582 Sal Temperature, water Temp °C Temperature Θ http://dbpedia.org/resource/Temperature water http://purl.obolibrary.org/obo/CHEBI_15377 CTD/Rosette CTD-RO CTD http://vocab.nerc.ac.uk/collection/L05/current/130/ CTD & XBT Water samplers Verdugo Josefa Josefa.verdugo@bio.au.dk 0000-0003-0121-1582 Temp [°C] CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels citable Arctic Ocean dissolved methane concentration author106189 author25516 author45206 author518 author54321 author63637 author66988 author66989 author82881 author89026 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