Skip to main content
Dataset Overview | National Centers for Environmental Information (NCEI)

Total alkalinity, pH on seawater scale, oxygen, temperature, salinity, nutrients and other measurements collected from discrete samples and profile observations during the R/V Sarmiento de Gamboa OVIDE-16 cruise (EXPOCODE 29AH20160617) in the North Atlantic Ocean from 2016-06-17 to 2016-07-31 (NCEI Accession 0190728)

browse graphicPreview graphic
This dataset includes discrete sample and profile data collected during the R/V Sarmiento de Gamboa OVIDE-16 cruise (EXPOCODE 29AH20160617) in the North Atlantic Ocean from 2016-06-17 to 2016-07-31. These data include total alkalinity, pH on sea water scale, oxygen, temperature, salinity, nutrients and chlorofluorocarbons. The instruments used to collect these data include alkalinity titrator, CTD, Niskin bottles and spectrophotometer. The International GO-SHIP Global Ocean Carbon and Repeat Hydrography Program carries out a systematic and global re-occupation of select WOCE/JGOFS hydrographic sections to quantify changes in storage and transport of heat, fresh water, carbon dioxide (CO2), and related parameters. The objectives of the OVIDE-16 cruise are fulfilled in spite of the problems derived from the installation of the new signal transmission cable. This operation delayed the departure by one week. However, this delay was recovered thanks to the speed of the ship, the constant adaptation of the cruise planning to the weather forecasts and the excellent reliability of the CTD and box- corer operations. A total of 138 CTD stations and 66 sediment sampling were done. In addition, the recovery and new deployment of two ASFAR-ARGO systems were done, as well as the deployment of five meteorological floats and nine ARGO floats.
  • Cite as: Pérez, Fiz F.; Lherminier, Pascale; Alonso-Pérez, Fernando; Steinfeldt, Reiner (2019). Total alkalinity, pH on seawater scale, oxygen, temperature, salinity, nutrients and other measurements collected from discrete samples and profile observations during the R/V Sarmiento de Gamboa OVIDE-16 cruise (EXPOCODE 29AH20160617) in the North Atlantic Ocean from 2016-06-17 to 2016-07-31 (NCEI Accession 0190728). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/nasz-v279. Accessed [date].
gov.noaa.nodc:0190728
Full Text · XML
Download Data
  • HTTPS (download)
    Navigate directly to the URL for data access and direct download.
  • FTP (download)
    These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP).
Distribution Formats
  • Originator data format
Ordering Instructions Contact NCEI for other distribution options and instructions.
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 2016-06-17 to 2016-07-31
Spatial Bounding Box Coordinates
West: -43.4
East: -9.3
South: 40.2
North: 63.5
Spatial Coverage Map
General Documentation
Associated Resources
Publication Dates
  • publication: 2019-07-03
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.
Dataset Citation
  • Cite as: Pérez, Fiz F.; Lherminier, Pascale; Alonso-Pérez, Fernando; Steinfeldt, Reiner (2019). Total alkalinity, pH on seawater scale, oxygen, temperature, salinity, nutrients and other measurements collected from discrete samples and profile observations during the R/V Sarmiento de Gamboa OVIDE-16 cruise (EXPOCODE 29AH20160617) in the North Atlantic Ocean from 2016-06-17 to 2016-07-31 (NCEI Accession 0190728). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/nasz-v279. 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-16
Provider Variable Abbreviations
  • ALKALI
  • CFCs
  • CTDSAL
  • CTDTMP
  • NITRAT
  • OXYGEN
  • PHSPHT
  • PH_TMP
  • SALNTY
  • SILCAT
  • pH
Data Center keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS
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
  • North Atlantic Ocean
Project keywords NODC PROJECT NAMES THESAURUS Cruise ID
  • OVIDE_2016, BOCATS
EXPOCODE
  • 29AH20160617
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.; Lherminier, Pascale; Alonso-Pérez, Fernando; Steinfeldt, Reiner (2019). Total alkalinity, pH on seawater scale, oxygen, temperature, salinity, nutrients and other measurements collected from discrete samples and profile observations during the R/V Sarmiento de Gamboa OVIDE-16 cruise (EXPOCODE 29AH20160617) in the North Atlantic Ocean from 2016-06-17 to 2016-07-31 (NCEI Accession 0190728). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/nasz-v279. 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
  • 2019-07-03T19:04:36Z - NCEI Accession 0190728 v1.1 was published.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Parameter or Variable: Total alkalinity; Abbreviation: ALKALI; Unit: UMOL/KG; 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; 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: Phosphate; Abbreviation: PHSPHT; Unit: UMOL/KG; Controlled vocabulary name: PHSPHT; 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: Chlorofluorocarbons (CFC-11, CFC-12); Abbreviation: CFCs; Unit: PMOL/KG; Controlled vocabulary name: Potential temperature (theta); In-situ / Manipulation / Response variable: in-situ .
Acquisition Information (collection)
Instrument
  • CTD
  • Niskin bottle
  • pH sensor
  • titrator
Platform
  • RV Sarmiento De Gamboa
Last Modified: 2024-06-10T13:04:06Z
For questions about the information on this page, please email: ncei.info@noaa.gov