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Dataset Overview | National Centers for Environmental Information (NCEI)

Dissolved inorganic carbon, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations during the R/V Discovery cruise D379, ELL_2012 (EXPOCODE 74DI20120731) in the North Atlantic Ocean from 2012-07-31 to 2012-08-17 (NCEI Accession 0157313)

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This dataset includes discrete profile measurements of dissolved inorganic carbon, total alkalinity, CTD temperature, CTD salinity, CTD oxygen, nutrients, and delta C13 made during the R/V Discovery cruise D379, ELL_2012 (EXPOCODE 74DI20120731) in the North Atlantic Ocean from 2012-07-31 to 2012-08-17. The Extended Ellett Line is a hydrographic section between Iceland and Scotland that is occupied annually by scientists from the National Oceanography Centre (NOC) and the Scottish Association for Marine Science (SAMS), UK. The measurement programme began as a seasonally-occupied hydrographic section in the Rockall Trough in 1975, building on early surface observations made underway from ocean weather ships. In 1996 the section was extended to Iceland, sampling three basins: the Rockall Trough, the Hatton-Rockall Basin and the Iceland Basin. This report presents a summary of data from the Extended Ellett Line programme. The data are analysed to calculate time series of temperature and salinity of the upper ocean and Labrador Sea Water in the eastern subpolar gyre. The most recent Extended Ellett Line cruise (August 2012) is shown as temperature, salinity and density sections.
  • Cite as: Hartman, Susan E.; Esposito, Mario; Achterberg, Eric; Humphreys, Matthew P.; Griffiths, Alex M. (2016). Dissolved inorganic carbon, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations during the R/V Discovery cruise D379, ELL_2012 (EXPOCODE 74DI20120731) in the North Atlantic Ocean from 2012-07-31 to 2012-08-17 (NCEI Accession 0157313). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.3334/cdiac/otg.clivar_eel_2012_d379. Accessed [date].
gov.noaa.nodc:0157313
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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 2012-07-31 to 2012-08-17
Spatial Bounding Box Coordinates
West: -20.2165
East: -6.133333
South: 56.66857
North: 63.31787
Spatial Coverage Map
General Documentation
Associated Resources
Publication Dates
  • publication: 2016-12-08
  • revision: 2018-09-12
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
Supplemental Information
These data were acquired by NCEI from the Carbon Dioxide Information Analysis Center (CDIAC) in accordance with an archival submission agreement between CDIAC and NCEI.

In this accession, NCEI has archived multiple versions of these data. The latest (and best) version of these data has the largest version number.
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: Hartman, Susan E.; Esposito, Mario; Achterberg, Eric; Humphreys, Matthew P.; Griffiths, Alex M. (2016). Dissolved inorganic carbon, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations during the R/V Discovery cruise D379, ELL_2012 (EXPOCODE 74DI20120731) in the North Atlantic Ocean from 2012-07-31 to 2012-08-17 (NCEI Accession 0157313). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.3334/cdiac/otg.clivar_eel_2012_d379. Accessed [date].
Cited Authors
Principal Investigators
Contributors
Resource Providers
Publishers
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
  • CTDOXY
  • CTDSAL
  • CTDTMP
  • DELC13
  • NITRAT
  • PHSPHT
  • SILCAT
  • TA
  • 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 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
  • North Atlantic Ocean
Project keywords NODC PROJECT NAMES THESAURUS Cruise ID
  • EEL_2012, D379
EXPOCODE
  • 74DI20120731
Global Change Master Directory (GCMD) Project Keywords Ocean Acidification Search Keywords
  • Ocean Carbon and Acidification Data System (OCADS) Project
Reference Section ID
  • Extended Ellett Line, CLIVAR AR07E
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Hartman, Susan E.; Esposito, Mario; Achterberg, Eric; Humphreys, Matthew P.; Griffiths, Alex M. (2016). Dissolved inorganic carbon, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations during the R/V Discovery cruise D379, ELL_2012 (EXPOCODE 74DI20120731) in the North Atlantic Ocean from 2012-07-31 to 2012-08-17 (NCEI Accession 0157313). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.3334/cdiac/otg.clivar_eel_2012_d379. 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
  • 2016-12-08T19:43:15Z - NCEI Accession 0157313 v1.1 was published.
  • 2018-09-12T21:06:17Z - NCEI Accession 0157313 was revised and v2.2 was published.
    Rationale: Updates were received for this dataset. These updates were copied into the data/0-data/ directory of this accession. These updates may provide additional files or replace obsolete files. This version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Parameter or Variable: Dissolved Inorganic Carbon; Abbreviation: TCARBN; Observation type: discrete; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Calculated; Replicate information: Repeated measurements on the same batch of seawater (n=3) in the lab gave consistent results (precision for the whole dataset estimated as 3 μmol kg-1).; Standardization description: In order to standardize the results, Certified Reference Materials (CRM) from A.G. Dickson, Scripps Institution of Oceanography were analysed as standards to calibrate the instrument at the beginning and end of each day of analysis. A daily correction factor was applied to all measured values according to Millero et al. (1998).; CRM batch number: 105, 119, 121.
  • Parameter or Variable: Total alkalinity; Abbreviation: TA; Observation type: discrete; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Type of titration: Titration with HCl (~0.10 mol/L) uses a closed cell procedure with an open cell, with a pH half cell electrode (glass bodied Orion 8101SC, Ross, USA) and an Ag/AgCl reference electrode (model 6.0729.100, Metrohm, Switzerland).; Cell type (open or closed): open cell; Curve fitting method: Non-linear curve fitting (least-squares) approach (Dickson et al., 2007); Uncertainty: Repeated measurements on the same batch of seawater (n=3) were undertaken every day prior to sample analysis in order to assess the precision of the method. The precision was estimated for the whole dataset to be 3 μmol kg-1 for DIC and 4 μmol kg-1 for TA. The accuracy of the measurement is assured by the standardization using the CRM from A.G. Dickson, Scripps Institution of Oceanography on daily basis.; Method reference: Dickson, A. G., C. L. Sabine, and J. R. Christian. 2007. Guide to best practices for ocean CO2 measurements. PICES Special Publication 3. 191 pp. Dumousseaud, C., E. P. Achterberg, T. Tyrrell, A. Charalampopoulou, U. Schuster, M. Hartman, and D. J. Hydes. 2010. Contrasting effects of temperature and winter mixing on the seasonal and inter-annual variability of the carbonate system in the Northeast Atlantic Ocean. Biogeosciences 7: 1481-1492. Grasshoff, K.: Determination of nutrients, in: Methods of Seawater Analysis, second edition, edited by: Grasshoff, K., Ehrhardt, M., and Kremling, K., Verlag Chemie GmbH, Basel, pp. 125-188, 419 pp., 1983. Hydes, D.J. et al. Use of a Ferry-Box system to look at shelf sea and ocean margin processes. In: Dahlin H., Flemming N.C., Nittis K., Petersson S.E. (Eds.), Building of the European Capacity in Operational Oceanography. Elsevier Oceanography Series 69, 2 Hydes, D. J., Yool, A., Campbell, J. M., Crisp, N. A., Dodgson, J., Dupee, B., Edwards, M., Hartman, S. E., Kelly-Gerreyn, B. A., Lavin, A. M., González-Pola, C. M. and Miller, P.: Use of a Ferry-Box system to look at shelf sea and ocean margin processes, edited by: Dahlin, H., Flemming, N. C., Nittis, K., Petersson, S. E., Building of the European Capacity in Operational Oceanography, Elsevier Oceanography Series, 69, 297-303, 2003. Millero, F. J., Dickson, A. G., Eischeid, G., Goyet, C., Guenther, P., Johnson, K. M., Key, R. M., Lee, K., Purkenson, D., Sabine, C. L., Schottle, R. G., Wallace, D. W. R., Lewis, E., and Winn, C. D.: Assessment of the quality of the shipboard measurements of total alkalinity on the WOCE Hydrographic Program Indian Ocean CO2 survey cruises 1994-1996, Mar. Chem., 63, 9-20, 1998.
  • Parameter or Variable: CTDTMP; Abbreviation: CTDTMP; Unit: DEG_C; Controlled vocabulary name: WATER TEMPERATURE; In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: CTDSAL; Abbreviation: CTDSAL; Controlled vocabulary name: SALINITY; In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: CTDOXY; Abbreviation: CTDOXY; Unit: UMOL/KG; Controlled vocabulary name: DISSOLVED OXYGEN; In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: SILCAT; Abbreviation: SILCAT; Unit: UMOL/KG; Controlled vocabulary name: silicate; In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: Nitrate; Abbreviation: NITRAT; Unit: UMOL/KG; Controlled vocabulary name: nitrate + nitrite content (concentration); In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: PHSPHT; Abbreviation: PHSPHT; Unit: UMOL/KG; Controlled vocabulary name: phosphate; In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: DELC13; Abbreviation: DELC13; In-situ / Manipulation / Response variable: in-situ .
Acquisition Information (collection)
Instrument
  • bottle
  • CTD
Platform
  • DISCOVERY
Last Modified: 2024-02-09T00:01:30Z
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