gov.noaa.nodc:0171017 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 2026-06-17T13:00:36Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Seawater Mg/Ca and Sr/Ca ratios worldwide from 2009 to 2017 collected in 79 cruises, including coupled measured data for temperature, salinity, total alkalinity, DIC, DO, and calculated pH and CO2 (NCEI Accession 0171017) 2018-03-10 publication 2018-03-05 creation International DOI Foundation (IDF) 10.7289/v5571996 NOAA National Centers for Environmental Information gov.noaa.nodc:0171017 NCEI Archive Management System 0171017 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 Mario Lebrato Kiel University (CAU) mlebrato13@gmail.com https://www.uni-kiel.de/ HTTPS Kiel University (CAU) website Institution web page information resourceProvider Kiel University (CAU) https://www.uni-kiel.de/ HTTPS Kiel University (CAU) website Institution web page information resourceProvider Mario Lebrato Kiel University (CAU) mlebrato13@gmail.com https://www.uni-kiel.de/ HTTPS Kiel University (CAU) website Institution web page information principalInvestigator Lebrato, Mario Christian-Albrechts-University Kiel (CAU) mlebrato13@gmail.com https://www.uni-kiel.de/ HTTPS Kiel University (CAU) website Institution web page information author Garbe-Schönberg, Dieter Christian-Albrechts-University Kiel (CAU) https://www.uni-kiel.de/ HTTPS Kiel University (CAU) website Institution web page information author Molinero, Juan-Carlos GEOMAR Helmholtz Centre for Ocean Research http://www.geomar.de/ HTTP GEOMAR Helmholtz Centre for Ocean Research Kiel (GEOMAR) website Institution web page information author Bremer, Karen Christian-Albrechts-University Kiel (CAU) https://www.uni-kiel.de/ HTTPS Kiel University (CAU) website Institution web page information author Oschlies, Andreas GEOMAR Helmholtz Centre for Ocean Research http://www.geomar.de/ HTTP GEOMAR Helmholtz Centre for Ocean Research Kiel (GEOMAR) website Institution web page information author Jones, Daniel O. B. National Oceanography Centre https://noc.ac.uk/ HTTPS National Oceanography Centre (NOC) website Institution web page information author Müller, Marius N. University of Sao Paulo https://io.usp.br/ HTTPS Oceanographic Institute of the University of São Paulo (IO-USP) website Institution web page information author Westernströer, Ulrike Christian-Albrechts-University Kiel (CAU) https://www.uni-kiel.de/ HTTPS Kiel University (CAU) website Institution web page information author Küter, Marie Christian-Albrechts-University Kiel (CAU) https://www.uni-kiel.de/ HTTPS Kiel University (CAU) website Institution web page information author Benavides, Roberto GEOMAR Helmholtz Centre for Ocean Research http://www.geomar.de/ HTTP GEOMAR Helmholtz Centre for Ocean Research Kiel (GEOMAR) website Institution web page information author Dasilva, Armindo BCSS Bazaruto Center for Scientific Studies author Blanco-Ameijeiras, Sonia University of Geneva author Iglesias-Rodriguez, Debora University of California Santa Barbara http://www.ucsb.edu HTTP University of California, Santa Barbara (UCSB) website Institution web page information author Greeley, Dana Pacific Marine Environmental Laboratory/NOAA https://www.pmel.noaa.gov/ HTTPS NOAA Pacific Marine Environmental Laboratory (PMEL) website Institution web page information author Feely, Richard A. Pacific Marine Environmental Laboratory/NOAA https://www.pmel.noaa.gov/ HTTPS NOAA Pacific Marine Environmental Laboratory (PMEL) website Institution web page information author Lamare, Miles University of Otago http://www.otago.ac.nz/ HTTP University of Otago website Institution web page information author Bell, Steven Bermuda Institute of Ocean Sciences (BIOS) http://www.bios.edu HTTP Bermuda Institute of Ocean Sciences (BIOS) website Institution web page information author Paulmier, Aurelien Laboratoire d´Etudes en Geophysique et Oceanographie Spatiales (LEGOS) https://www.legos.omp.eu/ HTTPS Laboratory of Space Geophysical and Oceanographic Studies (LEGOS) website Institution web page information author Graco, Michel Laboratoire d´Etudes en Geophysique et Oceanographie Spatiales (LEGOS) https://www.legos.omp.eu/ HTTPS Laboratory of Space Geophysical and Oceanographic Studies (LEGOS) website Institution web page information author Birsa, Laura Skidaway Institute of Oceanography http://www.skio.uga.edu/ HTTP Skidaway Institute of Oceanography (SkIO) website Institution web page information author Cartes, Joan Institute of Marine Sciences at Spanish National Research Council http://www.ismar.cnr.it/ HTTP National Research Council, Institute of Marine Sciences (ISMAR-CNR) website Institution web page information author Barcelos-Ramos, Joana University of the Azores author Payne, Chris University of British Columbia https://www.ubc.ca/ HTTPS The University of British Columbia (UBC) website Institution web page information author Olafsdottir, Solveig Marine Research Institute author Robinson, Kelly University of Louisiana at Lafayette https://louisiana.edu/ HTTPS University of Louisiana at Lafayette website Institution web page information author Jantunen, Liisa M. Government of Canada, Environment and Climate Change author Korablev, Alexander University of Bergen http://www.uib.no/gfi HTTP University of Bergen website Institution web page information author Webster, Richard Row to the Pole author Gilg, Olivier University of Burgundy http://en.u-bourgogne.fr/ HTTP University of Burgundy website Institution web page information author McFadden, Laurel University of Alaska Anchorage https://www.uaa.alaska.edu/ HTTPS University of Alaska Anchorage (UAA) website Institution web page information author Beldowski, Jacek Polish Academy of Sciences author Ashjian, Carin Woods Hole Oceanographic Institution http://www.whoi.edu HTTP Woods Hole Oceanographic Institution (WHOI) website Institution web page information author Daly, Nejib Hellenic Centre for Marine Research http://www.hcmr.gr/english_site/welcome/welcome.html HTTP Hellenic Centre for Marine Research (HCMR) website Institution web page information author Zervoudaki, Soultana University of Oviedo http://www.uniovi.es HTTP Universidad de Oviedo website Institution web page information author Acuña, Jose L. Instituto Español de Oceanografía (IEO) http://www.ieo.es/en/ HTTP Spanish Institute of Oceanography (IEO) website Institution web page information author de Lara, Ana Instituto Español de Oceanografía (IEO) http://www.ieo.es/en/ HTTP Spanish Institute of Oceanography (IEO) website Institution web page information author Leal, Ricardo S. author Jimenez, Paz author Twining, Benjamin Bigelow Laboratoy for Ocean Sciences http://www.bigelow.org/ HTTP Bigelow Laboratory for Ocean Sciences website Institution web page information author Bailly Du Bois, Pascal Laboratoire de Radioécologie de Cherbourg-Octeville pascal.bailly-du-bois@irsn.fr author Lorenzoni, Laura University of South Florida https://www.usf.edu/ HTTPS University of South Florida (USF) website Institution web page information author Paparazzo, Flavio E. Centro Nacional Patagonico author Hartman, Susan E. National Oceanography Centre https://noc.ac.uk/ HTTPS National Oceanography Centre (NOC) website Institution web page information author Tseng, Li-Chung National Taiwan University http://www.ntu.edu/english/main.html HTTP National Taiwan University (NTU) website Institution web page information author Hwang, Jiang-Shiou National Taiwan University http://www.ntu.edu/english/main.html HTTP National Taiwan University (NTU) website Institution web page information author Kiel University (CAU) https://www.uni-kiel.de/ HTTPS Kiel University (CAU) website Institution web page information contributor tableDigital This dataset consists of seawater Mg/Ca and Sr/Ca ratios, temperature, salinity, total alkalinity, DIC and DO measured from 79 cruises between 2009 and 2017. The long debate about the conservative behaviour of seawater Mg/Ca and Sr/Ca ratios becomes more complex by studying the ocean as a whole and not only open ocean settings or the deep sea. In this project we measured in 79 cruises around the world seawater Mg/Ca and Sr/Ca ratios to discover that the modern ocean ranges are well beyond the pre-assumed values used by modellers, paleoceanographers and experimentalists as the basis for their work (Mg/Ca = 4.5 to 6.5 mol:mol and Sr/CA = 7 to 9.8 mmol:mol). We find out that modern seawater ranges are similar to the last 20 million years (Neogene) increase in these ratios, challenging the pre-assumed knowledge and a good number of methods used that assume a constant seawater Mg/Ca or Sr/Ca ratio. We agree that open ocean, the deep sea and reconstructions of past seawater based on samples derived from these settings give a good representation, but by no means they represent the ocean as a whole, especially coastal areas, upwelling zones, polar waters, and even the euphotic zone. This dataset is available to the public for a wide variety of uses including scientific research and analysis. Funding Agency: Bundesministerium für Bildung und Forschung (BMBF) 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:0171017 Graphic not available. PNG 0171017 NCEI ACCESSION NUMBER 2018-02-25 publication partial pressure of carbon dioxide - water pH SALINITY total alkalinity TOTAL CARBON WATER TEMPERATURE theme NODC DATA TYPES THESAURUS carbon dioxide (CO2) gas analyzer temperature sensor instrument NODC INSTRUMENT TYPES THESAURUS laboratory analyses theme NODC OBSERVATION TYPES THESAURUS MULTIPLE SHIPS OF GERMANY platform NODC PLATFORM NAMES THESAURUS Kiel University dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS Kiel University dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS World-Wide Distribution place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBON EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBON DIOXIDE 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 24 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 CO2 ANALYZERS > CO2 ANALYZERS TEMPERATURE SENSORS > TEMPERATURE SENSORS instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 24 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 GEOGRAPHIC REGION > GLOBAL OCEAN place Global Change Master Directory (GCMD) Location Keywords 2026 revision 24 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 AT52BR Send2NCEI Submission Package ID accessLevel: public otherRestrictions Cite as: Lebrato, Mario; Garbe-Schönberg, Dieter; Molinero, Juan-Carlos; Bremer, Karen; Oschlies, Andreas; Jones, Daniel O. B.; Müller, Marius N.; Westernströer, Ulrike; Küter, Marie; Benavides, Roberto; Dasilva, Armindo; Blanco-Ameijeiras, Sonia; Iglesias-Rodriguez, Debora; Greeley, Dana; Feely, Richard A.; Lamare, Miles; Bell, Steven; Paulmier, Aurelien; Graco, Michel; Birsa, Laura; Cartes, Joan; Barcelos-Ramos, Joana; Payne, Chris; Olafsdottir, Solveig; Robinson, Kelly; Jantunen, Liisa M.; Korablev, Alexander; Webster, Richard; Gilg, Olivier; McFadden, Laurel; Beldowski, Jacek; Ashjian, Carin; Daly, Nejib; Zervoudaki, Soultana; Acuña, Jose L.; de Lara, Ana; Leal, Ricardo S.; Jimenez, Paz; Twining, Benjamin; Bailly Du Bois, Pascal; Lorenzoni, Laura; Paparazzo, Flavio E.; Hartman, Susan E.; Tseng, Li-Chung; Hwang, Jiang-Shiou (2018). Seawater Mg/Ca and Sr/Ca ratios worldwide from 2009 to 2017 collected in 79 cruises, including coupled measured data for temperature, salinity, total alkalinity, DIC, DO, and calculated pH and CO2 (NCEI Accession 0171017). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.7289/v5571996. 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. Lebrato, Mario; Garbe-Schönberg, Dieter; Müller, Marius N.; Blanco-Ameijeiras, Sonia; Feely, Richard A.; Lorenzoni, Laura; Molinero, Juan-Carlos; Bremer, Karen; Jones, Daniel O. B.; Iglesias-Rodriguez, Debora; Greeley, Dana; Lamare, Miles D.; Paulmier, Aurelien; Graco, Michelle; Cartes, Joan; Barcelos e Ramos, Joana; de Lara, Ana; Sanchez-Leal, Ricardo; Jimenez, Paz; Paparazzo, Flavio E.; Hartman, Susan E.; Westernströer, Ulrike; Küter, Marie; Benavides, Roberto; da Silva, Armindo F.; Bell, Steven; Payne, Chris; Olafsdottir, Solveig; Robinson, Kelly; Jantunen, Liisa M.; Korablev, Alexander; Webster, Richard J.; Jones, Elizabeth M.; Gilg, Olivier; Bailly du Bois, Pascal; Beldowski, Jacek; Ashjian, Carin; Yahia, Nejib D.; Twining, Benjamin; Chen, Xue-Gang; Tseng, Li-Chun; Hwang, Jiang-Shiou; Dahms, Hans-Uwe; Oschlies, Andreas. Global variability in seawater Mg:Ca and Sr:Ca ratios in the modern ocean; Proceedings of the National Academy of Sciences of the United States of America. PMEL contribution; 5046. 2020. https://doi.org/10.1073/pnas.1918943117 2020 publication noaa:29075 International DOI Foundation (IDF) https://doi.org/10.1073/pnas.1918943117 https://doi.org/10.1073/pnas.1918943117 HTTPS https://doi.org/10.1073/pnas.1918943117 NOAA Central Library: Journal Article information Lebrato, Mario author Garbe-Schönberg, Dieter author Müller, Marius N. author Blanco-Ameijeiras, Sonia author Feely, Richard A. author Lorenzoni, Laura author Molinero, Juan-Carlos author Bremer, Karen author Jones, Daniel O. B. author Iglesias-Rodriguez, Debora author Greeley, Dana author Lamare, Miles D. author Paulmier, Aurelien author Graco, Michelle author Cartes, Joan author Barcelos e Ramos, Joana author de Lara, Ana author Sanchez-Leal, Ricardo author Jimenez, Paz author Paparazzo, Flavio E. author Hartman, Susan E. author Westernströer, Ulrike author Küter, Marie author Benavides, Roberto author da Silva, Armindo F. author Bell, Steven author Payne, Chris author Olafsdottir, Solveig author Robinson, Kelly author Jantunen, Liisa M. author Korablev, Alexander author Webster, Richard J. author Jones, Elizabeth M. author Gilg, Olivier author Bailly du Bois, Pascal author Beldowski, Jacek author Ashjian, Carin author Yahia, Nejib D. author Twining, Benjamin author Chen, Xue-Gang author Tseng, Li-Chun author Hwang, Jiang-Shiou author Dahms, Hans-Uwe author Oschlies, Andreas author NOAA Library https://library.noaa.gov/ HTTPS NOAA Library website Institution web page information publisher PMEL contribution ; 5046 crossReference collection eng; USA utf8 environment oceans -180 180 -90 90 2009-01-01 2017-01-01 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 1.004 https://doi.org/10.7289/v5571996 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/171017 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/171017 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0117/0171017/ 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 0171017 v1.1 was published. 2018-03-10T21:59:17Z NCEI Accession 0171017 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0171017/1.1 HTTPS NCEI Accession 0171017 v1.1 published 2018-03-10T21:59:17Z download dataset Parameter or Variable: Mg/Ca and Sr/Ca (measured); Units: mol:mol; Observation Category: laboratory analysis; Sampling Instrument: ICP-OES; Sampling and Analyzing Method: ICP-OES standard preparation method by dilution 1/10 seawater samples and addition of Yttrium (more details to come later after paper submission); Data Quality Method: ICP-OES quality control with a standard every 10 samples and duplicate samples every 20 samples Triplicates done on outliers to ensure they were not outliers but result (more details to come later after paper submission) Parameter or Variable: Temperature, Salinity, Total Alkalinity, DIC (measured); Units: °C, n/a, umol/kg, umol/kg; Observation Category: laboratory analysis; Sampling Instrument: Sensor, Sensor, VINDTA, VINDTA; Sampling and Analyzing Method: n/a (more details to come later after paper submission); Data Quality Method: n/a (more details to come later after paper submission) asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian carbon dioxide (CO2) gas analyzer carbon dioxide (CO2) gas analyzer measures gaseous carbon dioxide Carbon dioxide gas analyzer has often been referred to as LI-COR, because a lot of researchers choose to use products manufactured by LI-COR incorporation for their carbon dioxide measurement. The main component of a carbon dioxide analyzer is a nondispersive infrared (NDIR) spectroscopic sensors to detect CO2 in a gaseous environment by its characteristic absorption. Carbon dioxide (CO2) gas analyzer works together with carbon dioxide (CO2) equilibrator (insttypes_id 184) to measure carbon dioxide in the water. To measure water carbon dioxide, water needs to be continuously supplied to a showerhead inside an equilibrator. As the water flows through the equilibrator chamber, dissolved carbon dioxide exchanges quickly with air in the headspace. This air is then sampled by the carbon dioxide analyzer to determine the mole fraction of CO2 in water. temperature sensor temperature sensor A sensor used to measure temperature. MULTIPLE SHIPS OF GERMANY MULTIPLE SHIPS OF GERMANY