Dataset Overview | National Centers for Environmental Information (NCEI)

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)

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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.

Dataset Citation

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].

Dataset Identifiers

ISO 19115-2 Metadata

gov.noaa.nodc:0171017

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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	2009-01-01 to 2017-01-01
Spatial Bounding Box Coordinates	West: -180 East: 180 South: -90 North: 90
Spatial Coverage Map

General Documentation

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Descriptive Information
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Associated Resources

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
- https://doi.org/10.1073/pnas.1918943117
  NOAA Central Library: Journal Article

Publication Dates	publication: 2018-03-10
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	Submission Package ID: AT52BR
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: 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].
Cited Authors	Lebrato, Mario Christian-Albrechts-University Kiel (CAU) Garbe-Schönberg, Dieter Christian-Albrechts-University Kiel (CAU) Molinero, Juan-Carlos GEOMAR Helmholtz Centre for Ocean Research Bremer, Karen Christian-Albrechts-University Kiel (CAU) Oschlies, Andreas GEOMAR Helmholtz Centre for Ocean Research Jones, Daniel O. B. National Oceanography Centre Müller, Marius N. University of Sao Paulo Westernströer, Ulrike Christian-Albrechts-University Kiel (CAU) Küter, Marie Christian-Albrechts-University Kiel (CAU) Benavides, Roberto GEOMAR Helmholtz Centre for Ocean Research Dasilva, Armindo BCSS Bazaruto Center for Scientific Studies Blanco-Ameijeiras, Sonia University of Geneva Iglesias-Rodriguez, Debora University of California Santa Barbara Greeley, Dana Pacific Marine Environmental Laboratory/NOAA Feely, Richard A. Pacific Marine Environmental Laboratory/NOAA Lamare, Miles University of Otago Bell, Steven Bermuda Institute of Ocean Sciences (BIOS) Paulmier, Aurelien Laboratoire d´Etudes en Geophysique et Oceanographie Spatiales (LEGOS) Graco, Michel Laboratoire d´Etudes en Geophysique et Oceanographie Spatiales (LEGOS) Birsa, Laura Skidaway Institute of Oceanography Cartes, Joan Institute of Marine Sciences at Spanish National Research Council Barcelos-Ramos, Joana University of the Azores Payne, Chris University of British Columbia Olafsdottir, Solveig Marine Research Institute Robinson, Kelly University of Louisiana at Lafayette Jantunen, Liisa M. Government of Canada, Environment and Climate Change Korablev, Alexander University of Bergen Webster, Richard Row to the Pole Gilg, Olivier University of Burgundy McFadden, Laurel University of Alaska Anchorage Beldowski, Jacek Polish Academy of Sciences Ashjian, Carin Woods Hole Oceanographic Institution Daly, Nejib Hellenic Centre for Marine Research Zervoudaki, Soultana University of Oviedo Acuña, Jose L. Instituto Español de Oceanografía (IEO) de Lara, Ana Instituto Español de Oceanografía (IEO) Leal, Ricardo S. Jimenez, Paz Twining, Benjamin Bigelow Laboratoy for Ocean Sciences Bailly Du Bois, Pascal Laboratoire de Radioécologie de Cherbourg-Octeville Lorenzoni, Laura University of South Florida Paparazzo, Flavio E. Centro Nacional Patagonico Hartman, Susan E. National Oceanography Centre Tseng, Li-Chung National Taiwan University Hwang, Jiang-Shiou National Taiwan University
Principal Investigators	Mario Lebrato University of Kiel (CAU)
Contributors	University of Kiel (CAU)
Resource Providers	Mario Lebrato University of Kiel (CAU) University of Kiel (CAU)
Publishers	NOAA National Centers for Environmental Information
Acknowledgments	Related Funding Agency: Bundesministerium für Bildung und Forschung (BMBF)

Theme keywords	NODC DATA TYPES THESAURUS partial pressure of carbon dioxide - water pH SALINITY total alkalinity TOTAL CARBON WATER TEMPERATURE NODC OBSERVATION TYPES THESAURUS laboratory analyses WMO_CategoryCode oceanography Global Change Master Directory (GCMD) Science Keywords 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
Data Center keywords	NODC COLLECTING INSTITUTION NAMES THESAURUS University of Kiel NODC SUBMITTING INSTITUTION NAMES THESAURUS University of Kiel
Platform keywords	NODC PLATFORM NAMES THESAURUS MULTIPLE SHIPS OF GERMANY
Instrument keywords	NODC INSTRUMENT TYPES THESAURUS carbon dioxide (CO2) gas analyzer temperature sensor Global Change Master Directory (GCMD) Instrument Keywords CO2 ANALYZERS > CO2 ANALYZERS TEMPERATURE SENSORS > TEMPERATURE SENSORS
Place keywords	NODC SEA AREA NAMES THESAURUS World-Wide Distribution Global Change Master Directory (GCMD) Location Keywords GEOGRAPHIC REGION > GLOBAL OCEAN
Keywords	NCEI ACCESSION NUMBER 0171017

Use Constraints	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].
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	2018-03-10T21:59:17Z - NCEI Accession 0171017 v1.1 was published.
Output Datasets	NCEI Accession 0171017 v1.1 NCEI Accession 0171017 v1.1 (download) published 2018-03-10T21:59:17Z

Lineage information for: dataset
Processing Steps	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).

Lineage information for: dataset

Processing Steps

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).

Acquisition Information (collection)
Instrument	carbon dioxide (CO2) gas analyzer temperature sensor
Platform	MULTIPLE SHIPS OF GERMANY

Last Modified: 2024-03-08T13:20:29Z
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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)

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