Publication Date:
2024-06-12
Description:
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)
Keywords:
Arctic; Arctic Ocean; Arctic Research Icebreaker Consortium: A strategy for meeting the needs for marine-based research in the Arctic; ARICE; CDOM; Chl-a; CTD; CTD, Sea-Bird, SBE 911plus; CTD/Rosette; DATE/TIME; Density, mass density; DEPTH, water; Der arktische Ozean 2020 – Ventilationszeitskalen, anthropogener Kohlenstoff und Variabilität in einer sich verändernden Umgebung; DFG_456675218; Event label; Fluorescence, chlorophyll; Fluorescence, colored dissolved organic matter; ITS-90, temperature scale; LATITUDE; LONGITUDE; New insights on ocean circulation and the fate of organic carbon in the Arctic Ocean; NOC; oceanography; Oden; Oxygen; Oxygen, dissolved; Practical Salinity Scale – 1978 (PSU78); Pressure, water; PSU78; Quality flag, absolute salinity; Quality flag, conservative water temperature; Quality flag, density; Quality flag, fluorescence, chlorophyll; Quality flag, fluorescence, colored dissolved organic matter; Quality flag, oxygen; Quality flag, potential water temperature; Quality flag, salinity; Quality flag, water temperature; Salinity; Salinity, absolute; Salinity; Temperature; SAS-Oden_2021; Seadatanet flag: Data quality control procedures according to SeaDataNet (2010); SO21; SO21_01-01; SO21_03-01; SO21_03-02; SO21_05-01; SO21_05-02; SO21_05-03; SO21_07-01; SO21_07-03; SO21_07-04; SO21_07-05; SO21_08-01; SO21_08-02; SO21_08-03; SO21_08-04; SO21_08-06; SO21_08-09; SO21_11-01; SO21_11-02; SO21_13-01; SO21_13-03; SO21_13-04; SO21_13-05; SO21_14-05; SO21_16-01; SO21_16-03; SO21_16-04; SO21_16-05; SO21_16-06; SO21_18-01; SO21_18-03; SO21_18-04; SO21_18-05; SO21_20-01; SO21_20-02; SO21_20-03; SO21_22-03; SO21_22-08; SO21_22-09; SO21_22-10; SO21_22-11; SO21_24-01; SO21_24-02; SO21_24-03; SO21_25-01; SO21_25-02; SO21_26-01; SO21_26-02; SO21_26-03; SO21_26-05; SO21_26-11; SO21_28-01; SO21_28-02; SO21_28-03; SO21_30-01; SO21_30-02; SO21_30-03; SO21_30-11; SO21_30-13; SO21_30-16; SO21_32-01; SO21_32-02; SO21_33-01; SO21_33-02; SO21_33-03; SO21_33-05; SO21_35-08; SO21_35-11; SO21_35-12; SO21_35-13; SO21_35-15; SO21_37-01; SO21_38-08; SO21_38-13; SO21_38-14; SO21_38-15; SO21_38-17; SO21_40-01; SO21_41-01; SO21_42-01; SO21_42-02; SO21_42-06; SO21_42-08; SO21_44-01; SO21_45-01; SO21_46-01; SO21_46-02; SO21_47-01; SO21_48-01; SO21_48-02; SO21_48-04; SO21_50-06; SO21_50-11; SO21_50-13; SO21_50-16; SO21_52-01; SO21_53-05; SO21_53-06; SO21_53-07; SO21_53-08; SO21_53-09; SO21_53-14; SO21_53-15; SO21_56-01; SO21_56-03; SO21_56-05; SO21_56-06; SO21_56-07; SO21_56-08; SO21_58-09; SO21_58-12; SO21_58-15; SO21_58-17; SO21_58-18; Synoptic Arctic Survey; Temperature, water; Temperature, water, conservative; Temperature, water, potential; TEOS-10; Thermodynamic Equation Of Seawater - 2010 (TEOS-10); WAOW; Why is the deep Arctic Ocean Warming?
Type:
Dataset
Format:
text/tab-separated-values, 3139799 data points
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