Arck, Yannis; Engelhardt, Edith; Freundt, Florian; Schäfer, Stefan; Scott, Stanley; Aeschbach, Werner (2025): Noble gas data during SAS21 Oden cruise [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.987272
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Published: 2025-11-10 • DOI registered: 2025-12-09
Abstract:
This data set provides the final measurement results of noble gas samples taken during the Synoptic Arctic Survery 2021 in the central Arctic Ocean on the icebreaker Oden (Snoeijs-Leijonmalm et al., 2022). At six distinct stations, located in the Nansen Basin, above the Gakkel Ridge, in the Amundsen Basin, the Makarov Basin and north of the Greenland shelf, two replicate samples were taken at 11 depths covering the complete water column from the surface to the ocean floor as part of the project Ventilation and Anthropogenic Carbon in the Arctic Ocean. Samples were transferred from Niskin bottles to copper tubes under atmospheric isolation (Beyerle et al., 2000). At Heidelberg University, the samples were analyzed on a sector field mass spectrometer for the dissolved concentrations of helium, neon, argon, krypton and xenon, as well as the 3He/4He ratio, from summer 2022 until spring 2025 within several measurement runs (Schwenk et al., 2022). The obtained concentrations were converted into saturation anomalies (Jenkins et al., 2019), based on the prevailing temperature and salinity measured during the cruise for each data point respectively (Heuzé et al., 2022). If applicable, both replicate measurements are averaged and the final result is stated. These noble gas concentration and saturation data can be used to identify ocean surface processes like sea ice formation and melt, cooling of inflowing water masses or bubble intrusion caused by wind and breaking waves.
References:
Beyerle, Urs; Aeschbach-Hertig, Werner; Imboden, Dieter M; Baur, H; Graf, T; Kipfer, Rolf (2000): A Mass Spectrometric System for the Analysis of Noble Gases and Tritium from Water Samples. Environmental Science & Technology, 34(10), 2042-2050, https://doi.org/10.1021/es990840h
Heuzé, Céline; Karam, Salar; Muchowski, Julia; Padilla, Alexandra; Stranne, Christian; Gerke, Lennart; Tanhua, Toste; Ulfsbo, Adam; Laber, Christien; Stedmon, Colin A (2022): Physical Oceanography measured on bottle water samples during ODEN expedition SO21 for the Synoptic Arctic Survey [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.951264
Jenkins, William J; Lott, D E III; Cahill, K L (2019): A determination of atmospheric helium, neon, argon, krypton, and xenon solubility concentrations in water and seawater. Marine Chemistry, 211, 94-107, https://doi.org/10.1016/j.marchem.2019.03.007
Schwenk, Cornelis; Freundt, Florian; Aeschbach, Werner; Boehrer, Bertram (2022): Extending Noble Gas Solubilities in Water to Higher Temperatures for Environmental Application. Journal of Chemical and Engineering Data, 67(5), 1164-1173, https://doi.org/10.1021/acs.jced.2c00009
Snoeijs-Leijonmalm, Pauline (2022): Expedition Report SWEDARCTIC : Synoptic Arctic Survey 2021 with icebreaker Oden [webpage]. Swedish Polar Research Secretariat, https://urn.kb.se/resolve?urn=urn:nbn:se:polar:diva-8882
Funding:
German Research Foundation (DFG), grant/award no. AE 93/21-1: Der arktische Ozean 2020 – Ventilationszeitskalen, anthropogener Kohlenstoff und Variabilität in einer sich verändernden Umgebung
German Research Foundation (DFG), grant/award no. TA 317/8-1: Der arktische Ozean 2020 – Ventilationszeitskalen, anthropogener Kohlenstoff und Variabilität in einer sich verändernden Umgebung
Coverage:
Median Latitude: 87.078631 * Median Longitude: -12.564728 * South-bound Latitude: 83.119333 * West-bound Longitude: -136.901667 * North-bound Latitude: 89.601833 * East-bound Longitude: 33.396167
Date/Time Start: 2021-08-04T17:29:40 * Date/Time End: 2021-09-02T08:51:55
Minimum DEPTH, water: 28.47016337 m * Maximum DEPTH, water: 4335.69023500 m
Event(s):
SO21_05-03 * Latitude: 83.119333 * Longitude: 29.480500 * Date/Time: 2021-08-04T17:29:40 * Elevation: -3912.0 m * Location: Arctic Ocean * Campaign: SAS-Oden_2021 (SO21) * Basis: Oden * Method/Device: Conductivity-Temperature-Depth- profiler (CTD), Sea-Bird Scientific, SBE911 plus * Comment: Elevation retrieved from GEBCO
SO21_08-09 * Latitude: 86.447333 * Longitude: 33.396167 * Date/Time: 2021-08-08T21:52:01 * Elevation: -3463.0 m * Location: Arctic Ocean * Campaign: SAS-Oden_2021 (SO21) * Basis: Oden * Method/Device: Conductivity-Temperature-Depth- profiler (CTD), Sea-Bird Scientific, SBE911 plus * Comment: Elevation retrieved from GEBCO
SO21_16-06 * Latitude: 88.944667 * Longitude: 22.730667 * Date/Time: 2021-08-12T21:59:29 * Elevation: -4283.0 m * Location: Arctic Ocean * Campaign: SAS-Oden_2021 (SO21) * Basis: Oden * Method/Device: Conductivity-Temperature-Depth- profiler (CTD), Sea-Bird Scientific, SBE911 plus * Comment: Elevation retrieved from GEBCO
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1560 data points