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Dataset Overview | National Centers for Environmental Information (NCEI)

Total alkalinity, pH on total scale, water temperature, salinity and other variables obtained during the R/V R/V Pourquoi Pas? GEOTRACES GA01 cruise along the GO-SHIP hydrographic section A25 (EXPOCODE 35PK20140515) in the North Atlantic Ocean from 2014-05-15 to 2014-06-30 (NCEI Accession 0173358)

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This dataset includes discrete sample and profile data collected during the R/V Pourquoi Pas? OVIDE-14 cruise along the GO-SHIP Section A25 and GEOTRACES GA01 (EXPOCODE 35PK20140515) in the North Atlantic Ocean from 2014-05-15 to 2014-06-30. These data include total alkalinity, pH on total scale, oxygen, temperature, salinity, nutrients and other measurements. The instruments used to collect these data include alkalinity titrator, CTD, bottle and spectrophotometer. These data were collected by Fiz Pérez of Instituto de Investigaciones Marinas de Vigo as part of the Hydrographic Repeat Sections Project data set. The International Global Ocean Carbon and Repeat Hydrography Program carries out a systematic and global re-occupation of select World Ocean Circulation Experiment (WOCE) hydrographic sections to quantify changes in storage and transport of heat, fresh water, carbon dioxide, and related parameters.
  • Cite as: Pérez, Fiz F.; Tréguer, Paul J.; Branellec, Pierre; García-Ibáñez, Maribel I.; Lherminier, Pascale; Sarthou, Géraldine (2018). Total alkalinity, pH on total scale, water temperature, salinity and other variables obtained during the R/V R/V Pourquoi Pas? GEOTRACES GA01 cruise along the GO-SHIP hydrographic section A25 (EXPOCODE 35PK20140515) in the North Atlantic Ocean from 2014-05-15 to 2014-06-30 (NCEI Accession 0173358). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.7289/v5cv4g2b. Accessed [date].
gov.noaa.nodc:0173358
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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 2014-05-15 to 2014-06-30
Spatial Bounding Box Coordinates
West: -53.8
East: -9.2
South: 40.2
North: 60
Spatial Coverage Map
General Documentation
Associated Resources
  • Perez, Fiz; Treguer, Paul; Branellec, Pierre; García-Ibáñez, Maribel I.; Lherminier, Pascale; Sarthou, Géraldine (2018). The 2014 Greenland-Portugal GEOVIDE bottle data (GO-SHIP A25 and GEOTRACES GA01). SEANOE. https://doi.org/10.17882/54653
    • https://doi.org/10.17882/54653
      Prior to being submitted to and archived by NCEI, the original version of these data (cited here) were reformatted to conform with NOAA Program-specific requirements. The original version of these data are available at this reference.
  • García-Ibáñez Maribel I., Perez Fiz F., Lherminier Pascale, Zunino Rodriguez Patricia, Mercier Herle, Treguer Paul (2018). The 2014 Greenland-Portugal GEOVIDE water masses data (GO-SHIP A25 and GEOTRACES GA01). Seanoe. https://doi.org/10.17882/54739
  • Lherminier, Pascale; Sarthou, Geraldine (2017). The 2014 Greenland-Portugal GEOVIDE CTDO2 hydrographic and SADCP data (GO-SHIP A25 and GEOTRACES GA01). SEANOE. https://doi.org/10.17882/52153
  • CARINA Section OVIDE
  • 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: 2018-05-25
  • revision: 2024-04-12
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
Purpose Coupled physical oceanography and biogeochemistry study of trace elements and their isotopes in the North Atlantic. Role of the past and present ocean in climate and climate change. The related project is GEOVIDE.
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.
  • Please note that cruise data are as provided in the National Center for Environmental Information's Ocean Carbon Data System archived version. For the original cruise data please see SEANOE data publication: Perez Fiz, Treguer Paul, Branellec Pierre, García-Ibáñez Maribel I., Lherminier Pascale, Sarthou Géraldine (2018). The 2014 Greenland-Portugal GEOVIDE bottle data (GO-SHIP A25 and GEOTRACES GA01). SEANOE. https://doi.org/10.17882/54653
Dataset Citation
  • Cite as: Pérez, Fiz F.; Tréguer, Paul J.; Branellec, Pierre; García-Ibáñez, Maribel I.; Lherminier, Pascale; Sarthou, Géraldine (2018). Total alkalinity, pH on total scale, water temperature, salinity and other variables obtained during the R/V R/V Pourquoi Pas? GEOTRACES GA01 cruise along the GO-SHIP hydrographic section A25 (EXPOCODE 35PK20140515) in the North Atlantic Ocean from 2014-05-15 to 2014-06-30 (NCEI Accession 0173358). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.7289/v5cv4g2b. 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 Keywords
  • OVIDE
Provider Variable Abbreviations
  • ALKALI
  • CTDSAL
  • CTDTMP
  • NITRAT
  • OXYGEN
  • PH_SWS
  • PH_TMP
  • PH_TOT
  • SALNTY
  • SILCAT
  • TALK
  • THETA
Data Center keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS
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
  • OVIDE_2014, GEOTRACES GA01
EXPOCODE
  • 35PK20140515
Ocean Acidification Search Keywords
  • Ocean Carbon and Acidification Data System (OCADS) Project
Reference Section ID
  • WOCE A01W
  • WOCE A25
Research Projects
  • Observatoire de la variabilite interannuelle et decennale (OVIDE)
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Pérez, Fiz F.; Tréguer, Paul J.; Branellec, Pierre; García-Ibáñez, Maribel I.; Lherminier, Pascale; Sarthou, Géraldine (2018). Total alkalinity, pH on total scale, water temperature, salinity and other variables obtained during the R/V R/V Pourquoi Pas? GEOTRACES GA01 cruise along the GO-SHIP hydrographic section A25 (EXPOCODE 35PK20140515) in the North Atlantic Ocean from 2014-05-15 to 2014-06-30 (NCEI Accession 0173358). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.7289/v5cv4g2b. 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
  • 2018-05-25T20:28:23Z - NCEI Accession 0173358 v1.1 was published.
  • 2024-04-12T17:06:30Z - NCEI Accession 0173358 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: Total alkalinity; Abbreviation: TALK; Observation type: discrete; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Type of titration: potentiometric titration; Curve fitting method: Total alkalinity was measured by potentiometric titrations to final pH of 4.40 following Pérez and Fraga 1987. Seawater samples for alkalinity were collected after pH samples, in 600 ml glass bottles. Samples were filled to overflowing and immediately stopped. Total alkalinity was measured using an automatic potentiometric titrator "TITRANDO Metrohm", with a combination glass electrode and a Pt-1000 probe (Metrohm 6.0257.000). The potentiometric titrations were carried out with hydrochloric acid ([HCl] = 0.1 M, Riedel-deHaën, Fixanal 38285).; Uncertainty: The precision of the AT measurements (± 0.34 μmol·kg-1) was calculated analysing 14 samples for reproducibility taken from different Niskin bottles closed at the same level (4815 dbar) at station 0. Besides, the 1011 AT duplicates analyses showed a reproducibility of 0.23 ± 0.44 μmol·kg-1 along the cruise.; Method reference: Pérez, F.F. and F. Fraga. 1987. A precise and rapid analytical procedure for alkalinity determination. Mar. Chem.,21, 169-182.
  • Parameter or Variable: pH; Abbreviation: PH_TOT; pH scale: SWS@25C; Observation type: discrete; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Temperature of pH measurement: 25C; Detailed sampling and analyzing information: pH was measured spectrophotometrically following Clayton and Byrne (1993). This method consists on adding a dye solution to the seawater sample, so that the ratio between two absorbencies at two different wavelengths is proportional to the sample pH. Seawater samples for pH were collected at 95 stations after oxygen samples from depth using cylindrical optical glass 10-cm path length cells, which were filled to overflowing and immediately stopped. The indicator was a solution of m-cresol purple prepared in seawater. After sampling all the samples were stabilised at 25ºC. All the absorbance measurements were obtained in the thermostated (25±0.2 ºC) cell compartment of a SHIMADZU UV-2401PC spectrophotometer. Seawater pH was measured using a double-wavelength spectrophotometric procedure (Byrne, 1987). The absorbance was measured at three different fixed wavelengths (434, 578 and 730 nm) and 75 μl of the dye solution were added to each sample using an adjustable repeater pipette. pH, on the total hydrogen ion concentration scale, is calculated using the following formula (Clayton and Byrne, 1993):.
  • 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: SALNTY; Abbreviation: SALNTY; Controlled vocabulary name: SALINITY; In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: OXYGEN; Abbreviation: OXYGEN; 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: NITRAT; Abbreviation: NITRAT; Unit: UMOL/KG; Controlled vocabulary name: NITRATE; In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: ALKALI; Abbreviation: ALKALI; Unit: UMOL/KG; Controlled vocabulary name: total alkalinity; In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: PH_SWS; Abbreviation: PH_SWS; Unit: @25C; Controlled vocabulary name: pH; In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: PH_TMP; Abbreviation: PH_TMP; Unit: DEG_C; Controlled vocabulary name: pH; In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: THETA; Abbreviation: THETA; Unit: DEG_C; Controlled vocabulary name: Potential temperature (theta); In-situ / Manipulation / Response variable: in-situ .
Acquisition Information (collection)
Instrument
  • CTD
  • Niskin bottle
  • spectrophotometer
  • titrator
Platform
  • POURQUOI PAS?
Last Modified: 2024-04-22T12:25:30Z
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