The CISE-LOCEAN seawater isotopic database (1998–2021)
15 pages, 5 figures, 2 tables.-- This work is distributed under the Creative Commons Attribution 4.0 License. The characteristics of the CISE-LOCEAN seawater isotope dataset (δ18O, δ2H, referred to as δD) are presented (https://doi.org/10.17882/71186; Waterisotopes-CISE-LOCEAN, 2021). This dataset c...
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ftcsic:oai:digital.csic.es:10261/273429 2024-02-11T10:06:43+01:00 The CISE-LOCEAN seawater isotopic database (1998–2021) Reverdin, Gilles Waelbroeck, Claire Pierre, C. Akhoudas, Camilla Aloisi, Giovanni Benetti, Marion Bourlès, Bernard Danielsen, Magnus Demange, Jérôme Diverrès, Denis Gascard, Jean-Claude Houssais, Marie-Noëlle Le Goff, Hervé Lherminier, Pascale Lo Monaco, Claire Mercier, Herlé Metzl, Nicolas Morisset, Simon Naamar, Aicha Reynaud, Thierry Sallée, Jean-Baptiste Thierry, V. Hartman, Susan E. Mawji, Edward W. Ólafsdóttir, Solveig R. Kanzow, Torsten Velo, A. Voelker, Antje H. L. Yashayaev, Igor Haumann, F. Alexander Leng, Melanie J. Arrowsmith, Carol Meredith, Michael European Commission 2022 http://hdl.handle.net/10261/273429 https://doi.org/10.5194/essd-14-2721-2022 https://doi.org/10.13039/501100000780 en eng Copernicus Publications #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/H2020/637770 Publisher's version https://doi.org/10.5194/essd-14-2721-2022 Sí Earth System Science Data 14: 2721–2735 (2022) 1866-3508 http://hdl.handle.net/10261/273429 doi:10.5194/essd-14-2721-2022 1866-3516 http://dx.doi.org/10.13039/501100000780 open artículo 2022 ftcsic https://doi.org/10.5194/essd-14-2721-202210.13039/501100000780 2024-01-16T11:26:20Z 15 pages, 5 figures, 2 tables.-- This work is distributed under the Creative Commons Attribution 4.0 License. The characteristics of the CISE-LOCEAN seawater isotope dataset (δ18O, δ2H, referred to as δD) are presented (https://doi.org/10.17882/71186; Waterisotopes-CISE-LOCEAN, 2021). This dataset covers the time period from 1998 to 2021 and currently includes close to 8000 data entries, all with δ18O, three-quarters of them also with δD, associated with a date stamp, space stamp, and usually a salinity measurement. Until 2010, samples were analyzed by isotopic ratio mass spectrometry and since then mostly by cavity ring-down spectroscopy (CRDS). Instrumental uncertainty in this dataset is usually as low as 0.03 ‰ for δ18O and 0.15 ‰ for δD. An additional uncertainty is related to the isotopic composition of the in-house standards that are used to convert data to the Vienna Standard Mean Ocean Water (VSMOW) scale. Different comparisons suggest that since 2010 the latter have remained within at most 0.03 ‰ for δ18O and 0.20 ‰ for δD. Therefore, combining the two uncertainties suggests a standard deviation of at most 0.05 ‰ for δ18O and 0.25 ‰ for δD. For some samples, we find that there has been evaporation during collection and storage, requiring adjustment of the isotopic data produced by CRDS, based on d-excess (δD − 8×δ18O). This adjustment adds an uncertainty in the respective data of roughly 0.05 ‰ for δ18O and 0.10 ‰ for δD. This issue of conservation of samples is certainly a strong source of quality loss for parts of the database, and “small” effects may have remained undetected. The internal consistency of the database can be tested for subsets of the dataset when time series can be obtained (such as in the southern Indian Ocean or North Atlantic subpolar gyre). These comparisons suggest that the overall uncertainty of the spatially (for a cruise) or temporally (over a year) averaged data is less than 0.03 ‰ for δ18O and 0.15 ‰ for δD. However, 18 comparisons with duplicate seawater data analyzed in ... Article in Journal/Newspaper North Atlantic Digital.CSIC (Spanish National Research Council) Indian Earth System Science Data 14 6 2721 2735 |
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Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
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English |
description |
15 pages, 5 figures, 2 tables.-- This work is distributed under the Creative Commons Attribution 4.0 License. The characteristics of the CISE-LOCEAN seawater isotope dataset (δ18O, δ2H, referred to as δD) are presented (https://doi.org/10.17882/71186; Waterisotopes-CISE-LOCEAN, 2021). This dataset covers the time period from 1998 to 2021 and currently includes close to 8000 data entries, all with δ18O, three-quarters of them also with δD, associated with a date stamp, space stamp, and usually a salinity measurement. Until 2010, samples were analyzed by isotopic ratio mass spectrometry and since then mostly by cavity ring-down spectroscopy (CRDS). Instrumental uncertainty in this dataset is usually as low as 0.03 ‰ for δ18O and 0.15 ‰ for δD. An additional uncertainty is related to the isotopic composition of the in-house standards that are used to convert data to the Vienna Standard Mean Ocean Water (VSMOW) scale. Different comparisons suggest that since 2010 the latter have remained within at most 0.03 ‰ for δ18O and 0.20 ‰ for δD. Therefore, combining the two uncertainties suggests a standard deviation of at most 0.05 ‰ for δ18O and 0.25 ‰ for δD. For some samples, we find that there has been evaporation during collection and storage, requiring adjustment of the isotopic data produced by CRDS, based on d-excess (δD − 8×δ18O). This adjustment adds an uncertainty in the respective data of roughly 0.05 ‰ for δ18O and 0.10 ‰ for δD. This issue of conservation of samples is certainly a strong source of quality loss for parts of the database, and “small” effects may have remained undetected. The internal consistency of the database can be tested for subsets of the dataset when time series can be obtained (such as in the southern Indian Ocean or North Atlantic subpolar gyre). These comparisons suggest that the overall uncertainty of the spatially (for a cruise) or temporally (over a year) averaged data is less than 0.03 ‰ for δ18O and 0.15 ‰ for δD. However, 18 comparisons with duplicate seawater data analyzed in ... |
author2 |
European Commission |
format |
Article in Journal/Newspaper |
author |
Reverdin, Gilles Waelbroeck, Claire Pierre, C. Akhoudas, Camilla Aloisi, Giovanni Benetti, Marion Bourlès, Bernard Danielsen, Magnus Demange, Jérôme Diverrès, Denis Gascard, Jean-Claude Houssais, Marie-Noëlle Le Goff, Hervé Lherminier, Pascale Lo Monaco, Claire Mercier, Herlé Metzl, Nicolas Morisset, Simon Naamar, Aicha Reynaud, Thierry Sallée, Jean-Baptiste Thierry, V. Hartman, Susan E. Mawji, Edward W. Ólafsdóttir, Solveig R. Kanzow, Torsten Velo, A. Voelker, Antje H. L. Yashayaev, Igor Haumann, F. Alexander Leng, Melanie J. Arrowsmith, Carol Meredith, Michael |
spellingShingle |
Reverdin, Gilles Waelbroeck, Claire Pierre, C. Akhoudas, Camilla Aloisi, Giovanni Benetti, Marion Bourlès, Bernard Danielsen, Magnus Demange, Jérôme Diverrès, Denis Gascard, Jean-Claude Houssais, Marie-Noëlle Le Goff, Hervé Lherminier, Pascale Lo Monaco, Claire Mercier, Herlé Metzl, Nicolas Morisset, Simon Naamar, Aicha Reynaud, Thierry Sallée, Jean-Baptiste Thierry, V. Hartman, Susan E. Mawji, Edward W. Ólafsdóttir, Solveig R. Kanzow, Torsten Velo, A. Voelker, Antje H. L. Yashayaev, Igor Haumann, F. Alexander Leng, Melanie J. Arrowsmith, Carol Meredith, Michael The CISE-LOCEAN seawater isotopic database (1998–2021) |
author_facet |
Reverdin, Gilles Waelbroeck, Claire Pierre, C. Akhoudas, Camilla Aloisi, Giovanni Benetti, Marion Bourlès, Bernard Danielsen, Magnus Demange, Jérôme Diverrès, Denis Gascard, Jean-Claude Houssais, Marie-Noëlle Le Goff, Hervé Lherminier, Pascale Lo Monaco, Claire Mercier, Herlé Metzl, Nicolas Morisset, Simon Naamar, Aicha Reynaud, Thierry Sallée, Jean-Baptiste Thierry, V. Hartman, Susan E. Mawji, Edward W. Ólafsdóttir, Solveig R. Kanzow, Torsten Velo, A. Voelker, Antje H. L. Yashayaev, Igor Haumann, F. Alexander Leng, Melanie J. Arrowsmith, Carol Meredith, Michael |
author_sort |
Reverdin, Gilles |
title |
The CISE-LOCEAN seawater isotopic database (1998–2021) |
title_short |
The CISE-LOCEAN seawater isotopic database (1998–2021) |
title_full |
The CISE-LOCEAN seawater isotopic database (1998–2021) |
title_fullStr |
The CISE-LOCEAN seawater isotopic database (1998–2021) |
title_full_unstemmed |
The CISE-LOCEAN seawater isotopic database (1998–2021) |
title_sort |
cise-locean seawater isotopic database (1998–2021) |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
http://hdl.handle.net/10261/273429 https://doi.org/10.5194/essd-14-2721-2022 https://doi.org/10.13039/501100000780 |
geographic |
Indian |
geographic_facet |
Indian |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
#PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/H2020/637770 Publisher's version https://doi.org/10.5194/essd-14-2721-2022 Sí Earth System Science Data 14: 2721–2735 (2022) 1866-3508 http://hdl.handle.net/10261/273429 doi:10.5194/essd-14-2721-2022 1866-3516 http://dx.doi.org/10.13039/501100000780 |
op_rights |
open |
op_doi |
https://doi.org/10.5194/essd-14-2721-202210.13039/501100000780 |
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Earth System Science Data |
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