Heuzé, Céline; Karam, Salar; Muchowski, Julia; Padilla, Alexandra; Stranne, Christian; Gerke, Lennart; Tanhua, Toste; Ulfsbo, Adam; Laber, Christien; Stedmon, Colin A (2022): Physical Oceanography during ODEN expedition SO21 for the Synoptic Arctic Survey [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.951266
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Hydrographic (CTD) profiles of Temperature, Salinity, Dissolved Oxygen, Chlorophyll A fluorescence and Coloured Dissolved Organic Matter (CDOM) collected in the Arctic Ocean, over the western Eurasian Basin and Lomonosov Ridge, between 2 August and 11 September 2021, from I/B Oden. This is the Swedish contribution to the international Synoptic Arctic Survey. This dataset merges the full-depth physical CTD and the shallow biological CTD profiles. Both systems had the standard SeaBird SBE911 plus system with dual sensors to measure in-situ temperature and conductivity and single sensors measuring pressure and oxygen. The physical CTD also had a CDOM sensor (Turner Cyclops fluorometer), while the Chl-A fluorometer (WET Labs, ECO-AFL/FL) was moved throughout the expedition between the two systems.
Salinity, Oxygen, Chl-A fluorescence and CDOM were calibrated against sample data collected and analysed by the co-authors:
- Salinity samples from the deep stations were analysed post-cruise using a salinometer (Guildline Autosal) and IAPSO standard seawater at the GEOMAR, Germany.
- Dissolved oxygen was determined onboard using an automatic Winkler titration setup with UV detection (Scripps Institute of Oceanography Oxygen Titration System version 2.35m).
- Chl-A concentration was determined post-cruise from flow cytometry (FCM) at Linnaeus University, Sweden. The samples consisted of 4 mL cryovials, of which 3.8 mL was sample water and 76 μL 25% EM grade glutaraldehyde solution (Glu stock). The samples incubated at room temperature for 5 minutes before flash freezing in liquid nitrogen and then placing in the -80 °C freezer in cryoboxes.
- CDOM was determined post-cruise at the National Institute of Aquatic Resources - DTU Aqua, Denmark, following the method of Lawaetz and Stedmon (2009)
This dataset contains the 1-m bin-averaged profiles. For more information about each sensor and their calibration, the reader is invited to check the cruise report (final version submitted on 20 September; shareable version with DOI coming soon)
Keyword(s):
Further details:
Snoeijs-Leijonmalm, Pauline (2022): Expedition Report SWEDARCTIC: Synoptic Arctic Survey 2021 with icebreaker Oden. Swedish Polar Research Secretariat, http://polar.diva-portal.org/smash/record.jsf?pid=diva2%3A1712331&dswid=8122 (FULLTEXT01.pdf)
Project(s):
Funding:
Danish Council for Independent Research (DFF), grant/award no. 9040-00266B: New insights on ocean circulation and the fate of organic carbon in the Arctic Ocean
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
Hasselblad Foundation, grant/award no. 2019-1218: Carbon and Tracer Chemistry in the Arctic Ocean (CATCHEM)
Horizon 2020 (H2020), grant/award no. 730965: Arctic Research Icebreaker Consortium: A strategy for meeting the needs for marine-based research in the Arctic (ARICE)
Swedish Research Council (VR), grant/award no. 2018-01398_Formas: Drivers of anthropogenic changes in carbon storage and ocean acidification in the new Arctic Ocean (DRACO2)
Coverage:
Median Latitude: 87.038125 * Median Longitude: -31.127342 * South-bound Latitude: 81.506833 * West-bound Longitude: -151.078000 * North-bound Latitude: 89.922833 * East-bound Longitude: 66.605667
Date/Time Start: 2021-08-02T15:17:08 * Date/Time End: 2021-09-11T12:42:25
Minimum DEPTH, water: 0.989267661 m * Maximum DEPTH, water: 4335.443042000 m
Event(s):
SO21_01-01 * Latitude: 81.506833 * Longitude: 26.737833 * Date/Time: 2021-08-02T15:17:08 * Elevation: -1243.0 m * Location: Arctic Ocean * Campaign: SAS-Oden_2021 (SO21) * Basis: Oden * Method/Device: CTD, Sea-Bird, SBE 911plus * Comment: Elevation retrieved from GEBCO
SO21_03-01 * Latitude: 82.021167 * Longitude: 30.367667 * Date/Time: 2021-08-03T11:49:58 * Elevation: -3247.0 m * Location: Arctic Ocean * Campaign: SAS-Oden_2021 (SO21) * Basis: Oden * Method/Device: CTD, Sea-Bird, SBE 911plus * Comment: Elevation retrieved from GEBCO
SO21_03-02 * Latitude: 82.063500 * Longitude: 30.446500 * Date/Time: 2021-08-03T15:56:32 * Elevation: -3233.0 m * Location: Arctic Ocean * Campaign: SAS-Oden_2021 (SO21) * Basis: Oden * Method/Device: CTD, Sea-Bird, SBE 911plus * Comment: Elevation retrieved from GEBCO
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Heuzé, Céline | |||
| 2 | DATE/TIME | Date/Time | Heuzé, Céline | Geocode | ||
| 3 | LATITUDE | Latitude | Heuzé, Céline | Geocode | ||
| 4 | LONGITUDE | Longitude | Heuzé, Céline | Geocode | ||
| 5 | Pressure, water | Press | dbar | Heuzé, Céline | ||
| 6 | DEPTH, water | Depth water | m | Heuzé, Céline | Geocode | |
| 7 | Temperature, water | Temp | °C | Heuzé, Céline | ITS-90, temperature scale | |
| 8 | Quality flag, water temperature | QF water temp | Heuzé, Céline | Seadatanet flag: Data quality control procedures according to SeaDataNet (2010) | QC flag meanings: 0:no QC, 1:good, 2:probably good, 3:probably bad, 4:bad, 5-7:not used, 8:interpolated, 9:missing | |
| 9 | Temperature, water, potential | Tpot | °C | Heuzé, Céline | ITS-90, temperature scale | potential temperature ref 0 dbar; the potential temperature was computed from the in-situ temperature using the GSW toolbox |
| 10 | Quality flag, potential water temperature | QF Tpot | Heuzé, Céline | Seadatanet flag: Data quality control procedures according to SeaDataNet (2010) | QC flag meanings: 0:no QC, 1:good, 2:probably good, 3:probably bad, 4:bad, 5-7:not used, 8:interpolated, 9:missing | |
| 11 | Temperature, water, conservative | Tcon | °C | Heuzé, Céline | ITS-90, temperature scale | the conservative temperature was computed from the in-situ temperature using the GSW toolbox. |
| 12 | Quality flag, conservative water temperature | QF Tcon | Heuzé, Céline | Seadatanet flag: Data quality control procedures according to SeaDataNet (2010) | QC flag meanings: 0:no QC, 1:good, 2:probably good, 3:probably bad, 4:bad, 5-7:not used, 8:interpolated, 9:missing | |
| 13 | Salinity | Sal | Heuzé, Céline | Practical Salinity Scale – 1978 (PSU78) (PSU78) | ||
| 14 | Quality flag, salinity | QF sal | Heuzé, Céline | Seadatanet flag: Data quality control procedures according to SeaDataNet (2010) | QC flag meanings: 0:no QC, 1:good, 2:probably good, 3:probably bad, 4:bad, 5-7:not used, 8:interpolated, 9:missing | |
| 15 | Salinity, absolute | ASAL | g/kg | Heuzé, Céline | Thermodynamic Equation Of Seawater - 2010 (TEOS-10) (TEOS-10) | the absolute salinity was computed from the practical salinity using the GSW toolbox |
| 16 | Quality flag, absolute salinity | QF ASAL | Heuzé, Céline | Seadatanet flag: Data quality control procedures according to SeaDataNet (2010) | QC flag meanings: 0:no QC, 1:good, 2:probably good, 3:probably bad, 4:bad, 5-7:not used, 8:interpolated, 9:missing | |
| 17 | Density, mass density | Density | kg/m3 | Heuzé, Céline | Thermodynamic Equation Of Seawater - 2010 (TEOS-10) (TEOS-10) | the density was computed from the absolute salinity and conservative temperature using the GSW toolbox |
| 18 | Quality flag, density | QF rho | Heuzé, Céline | Seadatanet flag: Data quality control procedures according to SeaDataNet (2010) | QC flag meanings: 0:no QC, 1:good, 2:probably good, 3:probably bad, 4:bad, 5-7:not used, 8:interpolated, 9:missing | |
| 19 | Oxygen, dissolved | DO | ml/l | Heuzé, Céline | this is the one returned by the sensor | |
| 20 | Oxygen | O2 | µmol/kg | Heuzé, Céline | this is the one returned by the sensor | |
| 21 | Quality flag, oxygen | QF O2 | Heuzé, Céline | Seadatanet flag: Data quality control procedures according to SeaDataNet (2010) | QC flag meanings: 0:no QC, 1:good, 2:probably good, 3:probably bad, 4:bad, 5-7:not used, 8:interpolated, 9:missing | |
| 22 | Fluorescence, chlorophyll | F chl | µg/l | Heuzé, Céline | ||
| 23 | Quality flag, fluorescence, chlorophyll | QF F chl | Heuzé, Céline | Seadatanet flag: Data quality control procedures according to SeaDataNet (2010) | QC flag meanings: 0:no QC, 1:good, 2:probably good, 3:probably bad, 4:bad, 5-7:not used, 8:interpolated, 9:missing | |
| 24 | Fluorescence, colored dissolved organic matter | fCDOM | Heuzé, Céline | |||
| 25 | Quality flag, fluorescence, colored dissolved organic matter | QF fCDOM | Heuzé, Céline | Seadatanet flag: Data quality control procedures according to SeaDataNet (2010) | QC flag meanings: 0:no QC, 1:good, 2:probably good, 3:probably bad, 4:bad, 5-7:not used, 8:interpolated, 9:missing |
Change history:
2023-05-02T06:41:06 – The authorship was extended to include: Stranne, Christian
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
3139799 data points
Download Data
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