Physical Oceanography during ODEN expedition SO21 for the Synoptic Arctic Survey


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)

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Creator Heuzé, Céline ORCID logo; Karam, Salar ORCID logo; Muchowski, Julia; Padilla, Alexandra; Stranne, Christian ORCID logo; Gerke, Lennart; Tanhua, Toste ORCID logo; Ulfsbo, Adam ORCID logo; Laber, Christien; Stedmon, Colin A ORCID logo
Publisher PANGAEA
Publication Year 2022
Funding Reference Danish Council for Independent Research Crossref Funder ID 9040-00266B New insights on ocean circulation and the fate of organic carbon in the Arctic Ocean; German Research Foundation Crossref Funder ID AE 93/21-1 Der arktische Ozean 2020 – Ventilationszeitskalen, anthropogener Kohlenstoff und Variabilität in einer sich verändernden Umgebung; German Research Foundation Crossref Funder ID TA 317/8-1 Der arktische Ozean 2020 – Ventilationszeitskalen, anthropogener Kohlenstoff und Variabilität in einer sich verändernden Umgebung; Hasselblad Foundation Crossref Funder ID 2019-1218 Carbon and Tracer Chemistry in the Arctic Ocean (CATCHEM); Horizon 2020 Crossref Funder ID 730965 doi:10.3030/730965 Arctic Research Icebreaker Consortium: A strategy for meeting the needs for marine-based research in the Arctic (ARICE); Swedish Research Council Crossref Funder ID 2018-01398_Formas Drivers of anthropogenic changes in carbon storage and ocean acidification in the new Arctic Ocean (DRACO2); Swedish Research Council Crossref Funder ID 2018-03859_VR Why is the deep Arctic Ocean Warming?
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 3139799 data points
Discipline Earth System Research
Spatial Coverage (-151.078W, 81.507S, 66.606E, 89.923N); Arctic Ocean
Temporal Coverage Begin 2021-08-02T15:17:08Z
Temporal Coverage End 2021-09-11T12:42:25Z