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Dataset Overview | National Centers for Environmental Information (NCEI)

Discrete, profile measurements of the dissolved inorganic carbon (DIC), total alkalinity, pH on total scale and other hydrographic and chemical data obtained during the PS-94, ARK-XXIX/3, TransArc-II cruise onboard R/V Polarstern (EXPOCODE 06AQ20150817) in the central Arctic Ocean from 2015-08-17 to 2015-10-15 (NCEI Accession 0170256)

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The expedition PS94 Trans-Arctic survey of the Arctic Ocean in transition ("TransArc II") aimed at capturing the physical, biological, and chemical changes of the Arctic Ocean. The retreat of the multi-year sea ice over the last decades, and the changes in ice and ocean circulation are tightly linked to changes in the heat and fresh water distribution with consequences for the gas exchange between ocean and atmosphere, for biogeochemical cycling and for organisms and ecosystems in the sea ice, in the water column and on the sea floor. This NCEI Accession includes discrete bottle measurements of Dissolved Inorganic Carbon (DIC), Total Alkalinity, pH on total scale, water temperature and salinity, oxygen, nutrients, CFCs, Dissolved organic carbon and other parameters measured onboard the R/V Polarstern in the central Arctic Ocean during the PS-94, ARK-XXIX/3, TransArc-II cruise (EXPOCODE 06AQ20150817) from 2015-08-17 to 2015-10-15.
  • Cite as: Schauer, Ursula; Jones, Elizabeth M.; Ulfsbo, Adam; Hansell, Dennis A.; Smethie, William M., Jr.; Rabe, Benjamin; van Ooijen, Jan C. (2018). Discrete, profile measurements of the dissolved inorganic carbon (DIC), total alkalinity, pH on total scale and other hydrographic and chemical data obtained during the PS-94, ARK-XXIX/3, TransArc-II cruise onboard R/V Polarstern (EXPOCODE 06AQ20150817) in the central Arctic Ocean from 2015-08-17 to 2015-10-15 (NCEI Accession 0170256). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.7289/v5319t5z. Accessed [date].
gov.noaa.nodc:0170256
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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 2015-08-17 to 2015-10-15
Spatial Bounding Box Coordinates
West: 20
East: -116.4
South: 70.7
North: 90
Spatial Coverage Map
General Documentation
Associated Resources
Publication Dates
  • publication: 2018-01-27
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 To capture the physical, biological, and chemical changes of the Arctic Ocean
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: Schauer, Ursula; Jones, Elizabeth M.; Ulfsbo, Adam; Hansell, Dennis A.; Smethie, William M., Jr.; Rabe, Benjamin; van Ooijen, Jan C. (2018). Discrete, profile measurements of the dissolved inorganic carbon (DIC), total alkalinity, pH on total scale and other hydrographic and chemical data obtained during the PS-94, ARK-XXIX/3, TransArc-II cruise onboard R/V Polarstern (EXPOCODE 06AQ20150817) in the central Arctic Ocean from 2015-08-17 to 2015-10-15 (NCEI Accession 0170256). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.7289/v5319t5z. Accessed [date].
Cited Authors
Principal Investigators
Contributors
Resource Providers
Publishers
Acknowledgments
  • Funding Information: International agencies (GEOTRACES)
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 Keywords
  • 06AQ20150817
  • ARK-XXIX/3
  • TransArc-II
Provider Variable Abbreviations
  • ALKALI
  • CFC
  • CTDOXY
  • CTDSAL
  • CTDTMP
  • DOC
  • OXYGEN
  • PH_TOT
  • SALNTY
  • SILCAT, NITRAT, NITRIT, PHSPHT
  • 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
  • Arctic Ocean
Project keywords NODC PROJECT NAMES THESAURUS Cruise ID
  • ARK-XXIX/3
  • PS-94
  • TransArc-II
EXPOCODE
  • 06AQ20150817
Ocean Acidification Search Keywords
  • Ocean Carbon and Acidification Data System (OCADS) Project
Reference Section ID
  • Arctic Ocean
Research Projects
  • ART
  • Arctic ROOS
  • Arctic/Subarctic Ocean Fluxes (ASOF)
  • FRAM
  • GEOTRACES (GEOTRACES)
  • RACE
  • TransArc II
  • Transdrift
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Schauer, Ursula; Jones, Elizabeth M.; Ulfsbo, Adam; Hansell, Dennis A.; Smethie, William M., Jr.; Rabe, Benjamin; van Ooijen, Jan C. (2018). Discrete, profile measurements of the dissolved inorganic carbon (DIC), total alkalinity, pH on total scale and other hydrographic and chemical data obtained during the PS-94, ARK-XXIX/3, TransArc-II cruise onboard R/V Polarstern (EXPOCODE 06AQ20150817) in the central Arctic Ocean from 2015-08-17 to 2015-10-15 (NCEI Accession 0170256). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.7289/v5319t5z. 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
  • 2018-01-27T02:00:07Z - NCEI Accession 0170256 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, bottle; Measured or calculated: Measured; Sampling instrument: Niskin Bottles; Analyzing instrument: VINDTA 3C instrument (MARIANDA, Kiel); Detailed sampling and analyzing information: DIC and TA were determined on all seawater and ice core melt samples. Both DIC and TA are measured in parallel with a VINDTA 3C instrument (MARIANDA, Kiel). The accuracy is set by internationally recognized and widely used certi ed reference material (CRM), batch 144, obtained from Prof. A. Dickson at Scripps Institute of Oceanography (USA). DIC is the sum of all dissolved inorganic carbon species and is determined by a precise coulometric method (Dickson et al., 2007). For every coulometric cell that was used in the coulometer, at least two CRMs were measured in duplicate at the beginning and the end of the analyses, where differences in the measurements infer the precision of the instrument. The precision for DIC and TA was determined from the in-bottle CRM duplicate analyses to be better than 2 umol/kg. The accuracy was checked against frequent analysis of CRMs.; CRM manufacturer: Andrew Dickson Laboratory at SIO; CRM batch number: Batch 144; Preservation method: mercuric chloride solution; Preservative volume: 100 mL; Uncertainty: precision was better than 2 micromol kg-1; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: Elisabeth Jones; Adam Ulfsbo; Researcher institution: Royal Netherlands Institute for Sea Research, the Netherlands; University of Gothenburg, Sweden.
  • Parameter or Variable: Total alkalinity; Abbreviation: ALKALI; Unit: UMOL/KG; Observation type: Discrete, bottle; Measured or calculated: Measured; Sampling instrument: Niskin Bottles; Analyzing instrument: ALKALI were determined on all seawater and ice core melt samples. Both DIC and TA are measured in parallel with a VINDTA 3C instrument (MARIANDA, Kiel); Type of titration: potentiometric titration; Cell type (open or closed): open; CRM batch number: Batch 144; Uncertainty: The precision for TA was determined from the in-bottle CRM duplicate analyses to be better than 2 μmol/kg. The accuracy was checked against frequent analysis of CRMs.; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Method reference: Dickson, Andrew G., Chris Sabine and James R. Christian, editors, "Guide to Best Practices for Ocean CO2 Measurements", Pices Special Publication 3, IOCCP Report No. 8, October 2007, SOP 3b, "Determination of total alkalinity in sea water using an open-cell titration"; Researcher name: Elisabeth Jones; Adam Ulfsbo; Researcher institution: Royal Netherlands Institute for Sea Research, the Netherlands; University of Gothenburg, Sweden.
  • Parameter or Variable: pH; Abbreviation: PH_TOT; pH scale: Total; Observation type: Discrete, bottle; Measured or calculated: Measured; Sampling instrument: Niskin Bottles; Analyzing instrument: spectrophotometry (pH); Temperature of pH measurement: 25 Deg C; Detailed sampling and analyzing information: A total of 54 stations were sampled for seawater pH using borosilicate bottles (250 mL), having tight plastic screw caps, and were rinsed with at least one bottle volume and lled to the rim. All samples were thermostated to 25degC at least 30 min prior to analysis directly after sampling. Seawater pH was determined spectrophotometrically (Clayton and Byrne, 1993) using the sulfonephthalein indicator m-Cresol Purple (mCP). Puri ed mCP (Liu et al., 2011) was purchased from the laboratory of Robert H. Byrne, University of South Florida, USA. The indicator solution (0.2 mM) was prepared by dissolving pre-weighed mCP indicator in 0.5 L ltered seawater (0.20 um) of about salinity 34. The indicator was adjusted to a pH in the same range as the samples, approximately +/- 0.2 pH units, by adding a small volume of concentrated HCl or NaOH. The pH values are corrected to 25degC on the total scale. The overall precision from duplicate sample analysis was better than +/-0.001 pH units. The accuracy is mainly set by the accuracy of the physico-chemical characterizations of the indicator with respect to temperature dependence and the determination of the equilibrium constants of the indicator, as well as the purity of the indicator (Liu et al., 2011). The accuracy was checked against Certi ed Reference Material for total alkalinity and total dissolved inorganic carbon, indicating that it should be well below 0.01 pH units.; At what temperature was pH reported: at SST; Uncertainty: 0.001; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: Elisabeth Jones; Adam Ulfsbo; Researcher institution: Royal Netherlands Institute for Sea Research, the Netherlands; University of Gothenburg, Sweden.
  • Parameter or Variable: CTD Temperature; Abbreviation: CTDTMP; Unit: degrees celcius; Observation type: CTD sensor; Sampling instrument: CTD; Analyzing instrument: CTD; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: B. Rabe; Researcher institution: AWI.
  • Parameter or Variable: CTD Salinity; Abbreviation: CTDSAL; Observation type: CTD sensor; Sampling instrument: CTD; Analyzing instrument: CTD; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: B. Rabe; Researcher institution: AWI.
  • Parameter or Variable: Bottle Salinity; Abbreviation: SALNTY; Observation type: Bottle, discrete; Sampling instrument: CTD; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: B. Rabe; Researcher institution: AWI.
  • Parameter or Variable: CTD Oxygen; Abbreviation: CTDOXY; Unit: UMOL/KG; Observation type: CTD sensor; Sampling instrument: CTD; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: B. Rabe; Researcher institution: AWI.
  • Parameter or Variable: Bottle Oxygen; Abbreviation: OXYGEN; Unit: UMOL/KG; Observation type: Bottle, discrete; Sampling instrument: CTD; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: B. Rabe; Researcher institution: AWI.
  • Parameter or Variable: Nutrients; Abbreviation: SILCAT, NITRAT, NITRIT, PHSPHT; Unit: UMOL/KG; Observation type: Bottle, discrete; Sampling instrument: CTD; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: B. Rabe; Researcher institution: AWI.
  • Parameter or Variable: CFC; Abbreviation: CFC; Unit: PMOL/KG; Observation type: Bottle, discrete; Sampling instrument: CTD bottles; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: W. Smethie; Researcher institution: Lamont-Doherty Earth Observatory, Columbia University.
  • Parameter or Variable: Dissolved Organic carbon; Abbreviation: DOC; Unit: UMOL/KG; Observation type: Bottle, discrete; Sampling instrument: CTD bottles; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: D. Hansell; Researcher institution: RSMAS, University of Miami .
Acquisition Information (collection)
Instrument
  • coulometer for DIC measurement
  • CTD
  • pH sensor
  • titrator
Platform
  • RV Polarstern
Last Modified: 2024-03-08T13:19:17Z
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