gov.noaa.nodc:0314086 eng utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NOAA Contact Information Information for contacts at NCEI. information custodian 2026-05-08T13:21:17Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Dissolved inorganic carbon (DIC), total alkalinity, (TA), pH on total scale, water temperature, salinity and other variables collected from discrete sample and profile observations collected during the R/V Akademik Ioffe along Repeat Hydrographic Section 59.5N cruise AI38 (EXPOCODE 90KD20120525) in the North Atlantic Ocean from 2012-05-25 to 2012-07-01 (NCEI Accession 0314086) 2026-04-21 publication 2026-04-10 creation International DOI Foundation (IDF) 10.25921/jhzd-t658 NOAA National Centers for Environmental Information gov.noaa.nodc:0314086 NCEI Archive Management System 0314086 NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information publisher Nico Lange GEOMAR Helmholtz Centre for Ocean Research Kiel (GEOMAR) nlange@geomar.de http://www.geomar.de/ HTTP GEOMAR Helmholtz Centre for Ocean Research Kiel (GEOMAR) website Institution web page information resourceProvider NORCE Norwegian Research Centre https://www.norceresearch.no/en/ HTTPS NORCE Norwegian Research Centre website Institution web page information resourceProvider Sergey V. Gladyshev Russian Academy of Sciences, P.P. Shirshov Institute of Oceanology http://www.ocean.ru/ HTTP Russian Academy of Sciences, P.P. Shirshov Institute of Oceanology website Institution web page information principalInvestigator Juana Magdalena Santana Casiano Universidad de Las Palmas de Gran Canaria (ULPGC) https://www.ulpgc.es/ HTTPS Universidad de Las Palmas de Gran Canaria (ULPGC) website Institution web page information principalInvestigator Gladyshev, Sergey V. Russian Academy of Sciences, P.P. Shirshov Institute of Oceanology http://www.ocean.ru/ HTTP Russian Academy of Sciences, P.P. Shirshov Institute of Oceanology website Institution web page information author Santana-Casiano, J. Magdalena Universidad de Las Palmas de Gran Canaria (ULPGC) https://www.ulpgc.es/ HTTPS Universidad de Las Palmas de Gran Canaria (ULPGC) website Institution web page information author Universidad de Las Palmas de Gran Canaria (ULPGC) https://www.ulpgc.es/ HTTPS Universidad de Las Palmas de Gran Canaria (ULPGC) website Institution web page information contributor Russian Academy of Sciences, P.P. Shirshov Institute of Oceanology http://www.ocean.ru/ HTTP Russian Academy of Sciences, P.P. Shirshov Institute of Oceanology website Institution web page information contributor tableDigital This dataset consists of dissolved inorganic carbon (DIC), total alkalinity, (TA), pH on total scale, water temperature, salinity and other variables collected from discrete sample and profile observations collected during the R/V Akademik Ioffe along Repeat Hydrographic Section 59.5N cruise AI38 (EXPOCODE 90KD20120525) in the North Atlantic Ocean from 2012-05-25 to 2012-07-01. The dataset comprises physical and carbonate system data collected during eight summer cruises (2009-2019) along the meridional hydrographic CLIVAR 59.5N section. This repeated section covered the longitudinal span of the subpolar North Atlantic at 59.5ºN between Scotland and Greenland (4.5-43.0ºW), encompassing the Irminger and Iceland basins, and the Rockall Trough. Sampling stations were equidistantly spaced every 20 n.m. apart (~1/3º longitude) in most cruises, with exceptions in 2016 where station spacing was decreased to 10 n.m. over Reykjanes Ridge slopes. Notably, the distance between stations over the east Greenland slope and shelf decreased from 10 n.m. to about 2 n.m. This dataset is available to the public for a wide variety of uses including scientific research and analysis. completed historicalArchive NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information pointOfContact asNeeded https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0314086 Preview graphic PNG 0314086 NCEI ACCESSION NUMBER 2026-03-16 publication DISSOLVED INORGANIC CARBON (DIC) DISSOLVED OXYGEN pH SALINITY total alkalinity WATER TEMPERATURE theme NODC DATA TYPES THESAURUS coulometer for DIC measurement CTD Niskin bottle oxygen sensor pH sensor salinometer temperature sensor titrator instrument NODC INSTRUMENT TYPES THESAURUS chemical discrete sample physical profile theme NODC OBSERVATION TYPES THESAURUS AKADEMIK IOFFE platform NODC PLATFORM NAMES THESAURUS Russian Academy of Sciences, P.P. Shirshov Institute of Oceanology Universidad de Las Palmas de Gran Canaria dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS NORCE Norwegian Research Centre dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS North Atlantic Ocean place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication RU/RAS/SIO > P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences, Russia dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian AI38 project Cruise ID 90KD20120525 project EXPOCODE Ocean Carbon and Acidification Data System (OCADS) Project project Ocean Acidification Search Keywords 59.5N project Reference Section ID EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Discrete measurement Profile theme OCADS Study Type ALKALI CTDSAL CTDTMP OXYGEN PH_TOT TCARBN theme Provider Variable Abbreviations COULOMETERS CTD > Conductivity, Temperature, Depth NISKIN BOTTLES OXYGEN METERS > OXYGEN METERS PH METERS > PH METERS SALINOMETERS TEMPERATURE SENSORS > TEMPERATURE SENSORS instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Ships platform Global Change Master Directory (GCMD) Platform Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian AKADEMIK IOFFE (call sign: UKLP, ICES code: 90KD, 1989-1992) platform ICES/SeaDataNet Ship Codes OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN place Global Change Master Directory (GCMD) Location Keywords 2026 revision 23 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian North Atlantic Ocean place Provider Geographic Names accessLevel: public otherRestrictions Cite as: Gladyshev, Sergey V.; Santana-Casiano, J. Magdalena (2026). Dissolved inorganic carbon (DIC), total alkalinity, (TA), pH on total scale, water temperature, salinity and other variables collected from discrete sample and profile observations collected during the R/V Akademik Ioffe along Repeat Hydrographic Section 59.5N cruise AI38 (EXPOCODE 90KD20120525) in the North Atlantic Ocean from 2012-05-25 to 2012-07-01 (NCEI Accession 0314086). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/jhzd-t658. Accessed [date]. 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. otherRestrictions 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. license This dataset is licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) License. SPDX License: Creative Commons Attribution 4.0 International (CC-BY-4.0) Data Management Support for the International Global Ocean Carbon and Repeat Hydrography Program 2022 publication https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/RepeatSections/ HTTPS https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/RepeatSections/ Related resource information NOAA National Centers for Environmental Information (NCEI) publisher documentDigital crossReference project Carbon in Atlantic Ocean 2022 publication https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/CARINA/ HTTPS https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/CARINA/ Related resource information NOAA National Centers for Environmental Information (NCEI) publisher documentDigital crossReference project 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 2022-04 publication https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system HTTPS https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system OCADS website information NOAA National Centers for Environmental Information author NOAA National Centers for Environmental Information (NCEI) publisher documentDigital [accessed 2024-02-08] crossReference program eng; USA utf8 environment oceans -42.367 -4.6 59.2 60 2012-05-25 2012-07-01 NOAA National Centers for Environmental Information +1-301-713-3277 ncei.info@noaa.gov pointOfContact 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. Contact NCEI for other distribution options and instructions. Originator data format 0.476 https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0314086.html HTTPS Web browser Project Metadata Navigate directly to the URL for a descriptive web page with download links. information https://doi.org/10.25921/jhzd-t658 HTTPS Web browser NCEI Dataset Landing Page Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/oas/314086 HTTPS Web browser Descriptive Information Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/download/314086 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0244/0314086/ FTP Any FTP client FTP 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). download dataset NCEI Accession 0314086 v1.1 was published. 2026-04-21T20:11:31Z NCEI Accession 0314086 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0314086/1.1 HTTPS NCEI Accession 0314086 v1.1 published 2026-04-21T20:11:31Z download dataset 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: Dissloved inorganic carbon (DIC) was determined onboard using a VINDTA 3C according to Mintrop et al., 2000. AT was analyzed via potentiometric titration with HCl, following the carbonic acid endpoint method (Millero et al., 1993; Dickson and Goyet, 1994), while CT was determined through coulometric titration (Johnson et al., 1993). In-situ calibration of the VINDTA 3C using Certified Reference Material (CRMs) by A. Dickson ensured accuracy of ±1.5 μmol kg-1 for AT and ±1.0 μmol kg-1 for CT.; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher institution: JAMSTEC 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: Spectrophotometry; Detailed sampling and analyzing information: Total alkalinity (AT) was determined onboard using a VINDTA 3C according to Mintrop et al., 2000. AT was analyzed via potentiometric titration with HCl, following the carbonic acid endpoint method (Millero et al., 1993; Dickson and Goyet, 1994), while CT was determined through coulometric titration (Johnson et al., 1993). In-situ calibration of the VINDTA 3C using Certified Reference Material (CRMs) by A. Dickson ensured accuracy of ±1.5 μmol kg-1 for AT and ±1.0 μmol kg-1 for CT.; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Method reference: Yao W. and R. H. Byrne (1998), Simplified seawater alkalinity analysis: Use of linear array spectrophotometers. Deep-sea Research Part I, 45, 1383-1392; Researcher institution: JAMSTEC Parameter or Variable: CTDTMP; Abbreviation: CTDTMP; Unit: DEG_C; Controlled vocabulary name: WATER TEMPERATURE; In-situ / Manipulation / Response variable: in-situ observation Parameter or Variable: CTDSAL; Abbreviation: CTDSAL; Controlled vocabulary name: SALINITY; In-situ / Manipulation / Response variable: in-situ observation Parameter or Variable: OXYGEN; Abbreviation: OXYGEN; Unit: UMOL/KG; Controlled vocabulary name: DISSOLVED OXYGEN; In-situ / Manipulation / Response variable: in-situ observation Parameter or Variable: Ph on Total Scale; Abbreviation: PH_TOT; Unit: SWS@25C; Controlled vocabulary name: pH; In-situ / Manipulation / Response variable: in-situ observation asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian coulometer for DIC measurement coulometer for DIC measurement measures dissolved inorganic carbon (DIC) A known amount of seawater is dispensed into a stripping chamber where it is acidified and purged with an inert gas. The amount of CO2 in the resulting gas stream is determined by absorbing the CO2 in an absorbent. The pH of the solution is monitored by measuring the transmittance . CTD CTD Conductivity-Temperature-Depth probe Niskin bottle Niskin bottle Device for obtaining samples of seawater at a specific depth Why special entry for Niskin bottle but no entry for Nansen bottle? oxygen sensor oxygen sensor Any instrument that measures oxygen content in a compound. pH sensor pH sensor generic meter used to measure pH Any of a class of instruments used to quantify pH in a water or other type of sample. salinometer salinometer generic salinometer use salinometer when the instrument type used is unclear but the data include salinity measurements temperature sensor temperature sensor A sensor used to measure temperature. titrator titrator titrator AKADEMIK IOFFE Updated information from ICES for the vessel AKADEMIK IOFFE from USSR. NOTE: Use code = 90KD for data from USSR platform AKADEMIK IOFFE collected prior to 1993. Use code = RUAI for data from RUSSIAN FEDERATION platform Akademik Ioffe collected after 1992. Code : 90KD Name : AKADEMIK IOFFE Flag : USSR - SUHH (ISO Country Code) Call Sign : UKLP Platform Class : Research vessel IMO : 8507731 Commissioned Date : 1989 Decommissioned Date : 1992 Current Length : 117 Built : 1989 Notes : Soviet Academy of Science ice-hardened research vessel. Same Vessels Info: RUAI - Akademik Ioffe