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Dataset Overview | National Centers for Environmental Information (NCEI)

Dissolved inorganic carbon (DIC), total alkalinity, water temperature, salinity, dissolved oxygen, nutrients and other measurements collected from profile and discrete sample observations during the R/V Discovery cruise DY111 (EXPOCODE 74EQ20191202) in the South Pacific Ocean, Southern Ocean from 2019-12-02 to 2020-01-09 (NCEI Accession 0282252)

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This dataset includes discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity, temperature, salinity, oxygen and nutrients collected during the R/V Discovery cruise DY111 (EXPOCODE 74EQ20191202) in the South Pacific Ocean, Southern Ocean from 2019-12-02 to 2020-01-09. This cruise is a part of Carbon Uptake and Seasonal Traits in Antarctic Remineralisation Depth (CUSTARD) Project. The CUSTARD project examines how seasonal changes in nutrient availability for phytoplankton, at a key junction of the global ocean circulation, influence how long carbon is trapped in the ocean rather than escaping to the atmosphere as carbon dioxide.
  • Cite as: Martin, Adrian; García-Ibáñez, Maribel I.; Bakker, Dorothee C. E.; Pabortsava, Katsiaryna; Venables, Hugh J. (2023). Dissolved inorganic carbon (DIC), total alkalinity, water temperature, salinity, dissolved oxygen, nutrients and other measurements collected from profile and discrete sample observations during the R/V Discovery cruise DY111 (EXPOCODE 74EQ20191202) in the South Pacific Ocean, Southern Ocean from 2019-12-02 to 2020-01-09 (NCEI Accession 0282252). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/f1xv-9s12. Accessed [date].
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Distributor NOAA National Centers for Environmental Information
+1-301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Time Period 2019-12-02 to 2020-01-09
Spatial Bounding Box Coordinates
West: -89.4
East: -80
South: -59.983
North: -52.653
Spatial Coverage Map
General Documentation
Associated Resources
  • Aminot, A.; Kérouel, R. (2007) Dosage automatique des nutriments dans les eaux marines. 188p. In Methodes d’analyse en milieu marin. Ifremer, ed. Editions 25 Quae.
  • Becker, S.; Aoyama, M.; Woodward, E.M.S.; Bakker, K.; Coverly. S.; Mahaffey, C.; Tanhua, T. (2019) GO-SHIP Repeat Hydrography Nutrient Manual: The precise and accurate determination of dissolved inorganic nutrients in seawater, using Continuous Flow Analysis methods. In: GO-SHIP Repeat Hydrography Manual: A Collection of Expert Reports and Guidelines. Version 1.1, [56pp.]. https://doi.org/10.25607/OBP-555.
  • Benson, B.B.; Krause, D.Jr. (1984) The concentration and isotopic fractionation of oxygen dissolved in freshwater and seawater in equilibrium with the atmosphere, Limnology and Oceanography, 29, 620-632, https://doi.org/10.4319/lo.1984.29.3.0620.
  • Birchill, A.J.; Clinton-Bailey, G.; Hanz, R.; Mawji, E.; Cariou, T.; White, C.; Ussher, S.J.; Worsfold, P.J.; Achterberg, E.P.; Mowlem, M. (2019) Realistic measurement uncertainties for marine macronutrient measurements conducted using gas segmented flow and Lab-on-Chip techniques. Talanta, 200, 228-235, https://doi.org/10.1016/j.talanta.2019.03.032.
  • Dickson, A.G.; Sabine, C.L.; Christian, J.R. (2007) Guide to best practices for ocean CO2 measurements. North Pacific Marine Science Organization Sidney, British Columbia.
  • Dickson, A.; Goyet, C., eds. (1994) Handbook of methods for the analysis of the various parameters of the carbon dioxide system in sea water; version 2, no. no. 74 in ORNL/CDIAC-74, US Department of Energy.
  • Hydes, D.J.; Aoyama, M.; Aminot, A.; Bakker, K.; Becker, S.; Coverly, S.; et al. (2010) Determination of dissolved nutrients (N, P, Si) in seawater with high precision and inter-comparability using gas-segmented continuous flow analysers. GO-SHIP Repeat Hydrography Manual: A collection of expert reports and guidelines. IOCCP report #14, ICPO publications series no.134, Version 1.
  • Johnson, K.M.; Williams, P.J.LeB.; Brändström, L.; Sieburth, J.McN. (1987) Coulometric total carbon dioxide analysis for marine studies: automatization and calibration. Marine Chemistry 21, 117-133.
  • Mintrop, L. (2004) VINDTA, Versatile Instrument for the Determination of Titration Alkalinity. Manual for versions 3S and 3C. Version 2.0. MARine ANalytics and Data (MARIANDA), Kiel, Germany, 45pp.
  • Data Management Support for the International Global Ocean Carbon and Repeat Hydrography Program
  • NOAA National Centers for Environmental Information (2022). Ocean Carbon and Acidification Data System (OCADS). NOAA National Centers for Environmental Information. https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system
Publication Dates
  • publication: 2023-09-08
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility
Data Update Frequency As needed
Purpose This dataset is available to the public for a wide variety of uses including scientific research and analysis.
Use Limitations
  • accessLevel: Public
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Dataset Citation
  • Cite as: Martin, Adrian; García-Ibáñez, Maribel I.; Bakker, Dorothee C. E.; Pabortsava, Katsiaryna; Venables, Hugh J. (2023). Dissolved inorganic carbon (DIC), total alkalinity, water temperature, salinity, dissolved oxygen, nutrients and other measurements collected from profile and discrete sample observations during the R/V Discovery cruise DY111 (EXPOCODE 74EQ20191202) in the South Pacific Ocean, Southern Ocean from 2019-12-02 to 2020-01-09 (NCEI Accession 0282252). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/f1xv-9s12. Accessed [date].
Cited Authors
Principal Investigators
Contributors
Resource Providers
Publishers
Acknowledgments
  • Funding Information: National Oceanography Centre, Southampton
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Global Change Master Directory (GCMD) Science Keywords OCADS Study Type
  • Discrete measurement
  • Profile
Provider Variable Abbreviations
  • ALKALI
  • CTDOXY
  • CTDSAL
  • CTDTMP
  • Nutrients
  • OXYGEN
  • SALNTY
  • TCARBN
Data Center keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS Global Change Master Directory (GCMD) Data Center Keywords
Platform keywords NODC PLATFORM NAMES THESAURUS Global Change Master Directory (GCMD) Platform Keywords ICES/SeaDataNet Ship Codes
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords Provider Geographic Names
  • South Pacific Ocean
  • Southern Ocean
Project keywords NODC PROJECT NAMES THESAURUS Cruise ID
  • DY111
EXPOCODE
  • 74EQ20191202
Global Change Master Directory (GCMD) Project Keywords Ocean Acidification Search Keywords
  • Ocean Carbon and Acidification Data System (OCADS) Project
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Martin, Adrian; García-Ibáñez, Maribel I.; Bakker, Dorothee C. E.; Pabortsava, Katsiaryna; Venables, Hugh J. (2023). Dissolved inorganic carbon (DIC), total alkalinity, water temperature, salinity, dissolved oxygen, nutrients and other measurements collected from profile and discrete sample observations during the R/V Discovery cruise DY111 (EXPOCODE 74EQ20191202) in the South Pacific Ocean, Southern Ocean from 2019-12-02 to 2020-01-09 (NCEI Accession 0282252). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/f1xv-9s12. Accessed [date].
Access Constraints
  • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Fees
  • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for: dataset
Processing Steps
  • 2023-09-08T06:20:40Z - NCEI Accession 0282252 v1.1 was published.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Parameter or Variable: Dissolved Inorganic Carbon; Abbreviation: TCARBN; Unit: UMOL/KG; Observation type: discrete; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: Niskin Bottles; Detailed sampling and analyzing information: Coulometric method (Johnson et al., 1987; DOE, 1994) using two VINDTA (Versatile Instrument for Determination of Titration Alkalinity) combined DIC/TA instruments (#4 and #7, version 3C, MARIANDA) operated at 25°C (Mintrop, 2004). Samples drawn directly from the 20 L Niskin bottles using plastic tubing, and collected in 250 mL glass bottles. Samples were prepared for their storage leaving a headspace of 1 % of the bottle volume and adding 50 μL of saturated HgCl2 in order to prevent biological alteration of the sample. The bottles were sealed with glass stoppers covered with grease and sealed with a rubber band, and stored in the dark at room temperature until analysis, usually no later than 2 days. Five replicate 250 mL samples were collected per cast. Generally, all samples from stations were run on one coulometer cell and the coulometry cell was changed every 20-24 hours. Measurements of seawater Certified Reference Material (CRM, Univ California San Diego, SIO, A. Dickson, batch 182) were performed in order to control the accuracy of the measurements.; CRM manufacturer: CRM, Univ California San Diego, SIO, A. Dickson; CRM batch number: 182; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value.
  • Parameter or Variable: Total Alkalinity; Abbreviation: ALKALI; Unit: UMOL/KG; Observation type: discrete; Sampling instrument: Niskin Bottles; Detailed sampling and analyzing information: Potentiometric titration using two VINDTA (Versatile Instrument for Determination of Titration Alkalinity) combined DIC/TA instruments (#4 and #7, version 3C, MARIANDA) operated at 25°C (Mintrop, 2004). The systems use a Metrohm Titrino 719S for adding acid, an ORION-Ross pH electrode and a Metrohm reference electrode. Samples drawn directly from the 20 L Niskin bottles using plastic tubing, and collected in 250 mL glass bottles. Samples were prepared for their storage leaving a headspace of 1 % of the bottle volume and adding 50 μL of saturated HgCl2 in order to prevent biological alteration of the sample. The bottles were sealed with glass stoppers covered with grease and sealed with a rubber band, and stored in the dark at room temperature until analysis, usually no later than 2 days. Five replicate 250 mL samples were collected per cast. The burette, the pipette (volume approximately 100 mL), and the analysis cell have a water jacket around them at 25 °C. The titrant (0.1 M hydrochloric acid, HCl) was made at UEA. Measurements of seawater Certified Reference Material (CRM, Univ California San Diego, SIO, A. Dickson, batch 182) were performed in order to control the accuracy of the measurements.; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value.
  • Parameter or Variable: CTD Temperature; Abbreviation: CTDTMP; Unit: degrees celcius; Observation type: CTD sensor; Sampling instrument: CTD; Analyzing instrument: CTD Sensor; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value.
  • Parameter or Variable: CTD Salinity; Abbreviation: CTDSAL; Observation type: CTD sensor; Sampling instrument: CTD; Analyzing instrument: CTD sensor; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value.
  • Parameter or Variable: CTD Oxygen; Abbreviation: CTDOXY; Unit: UMOL/KG; Observation type: CTD sensor; Sampling instrument: CTD; Analyzing instrument: CTD sensor; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value.
  • Parameter or Variable: Salinity; Abbreviation: SALNTY; Observation type: Discrete, bottle; Sampling instrument: Niskin Bottles; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value.
  • Parameter or Variable: Dissolved Oxygen; Abbreviation: OXYGEN; Unit: UMOL/KG; Observation type: Discrete, bottle; Sampling instrument: Niskin Bottles; Detailed sampling and analyzing information: Winkler Titration with potentiometric end-point detection using a Metrohm 916 Ti-Touch controller and 2 Metrohm Dosino 800 units for dispensing Thiosulphate and Iodate solutions. A Metrohm Pt-Titrode electrode was used for detecting the potentiometric end-point of the titration. The titration sequence and data acquisition were controlled by Metrohm Tiamo software. Samples directly collected from the Niskin bottles into 100 mL borosilicate glass bottles, using silicone tubing. Oxygen in the samples was fixed with Manganese Chloride and Alkaline Iodide solutions dispensed from calibrated pipettes. The fixing temperature was recorded on a hand-held thermometer. Immediately after fixing, the samples were shaken and made air-tight with water-filled collars before stored in the dark until analysis. Titrations for dissolved oxygen determination were made within the following 24 h. The concentration of thiosulphate was calibrated prior to starting oxygen analyses as well as blank determination. Oxygen saturation was calculated from the equations for solubility in seawater of Benson and Krause (1984).; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value.
  • Parameter or Variable: silicate, nitrat+nitrit, phosphate; Abbreviation: Nutrients; Unit: UMOL/KG; Observation type: Discrete, bottle; Sampling instrument: Niskin Bottles; Detailed sampling and analyzing information: Inorganic nutrient salts in seawater were determined by SFA (Segmented Flow Autoanalyzer) (Aminot and Kérouel, 2007) with a SEAL QuAAtro 39 analyzer using colorimetric methods (Hydes et al., 2010 and Becker et al., 2020) Samples drawn from Niskin bottles into 15 mL centrifuge tubes. Analysis was within 24 hours of the samples being taken. Two sets of certified reference materials (CRM Lots CJ and CB, KANSO, Japan) were measured at a start and the end of each sample run. These values were then used to calculate random and systematic uncertainties of each measurement, following Birchill et al. (2019). The detection limit was calculated from 10 replicates of the lowest concentration standard for each run. Detection limits: SILCAT 0.02-0.15 μmol/kg, NITRAT_ NITRIT 0.02-0.20 μmol/kg, PHSPHT 0.002-0.019 μmol/kg.; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value .
Acquisition Information (collection)
Instrument
  • carbon dioxide (CO2) gas analyzer
  • CTD
  • Niskin bottle
  • nutrient autoanalyzer
  • oxygen sensor
  • salinometer
  • temperature sensor
  • titrator
Platform
  • RRS Discovery
Last Modified: 2024-03-08T13:20:29Z
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