seanoe:71186 data@seanoe.org 2026-01-13 ISO 19115:2003/19139 1.0 Water isotopes of sea water analyzed since 1998 at LOCEAN 2025-06 2026-01-13 waterisotopes-CISE-LOCEAN (2025). Water isotopes of sea water analyzed since 1998 at LOCEAN. SEANOE. https://doi.org/10.17882/71186 LOCEAN has been in charge of collecting sea water for the analysis of water isotopes on a series of cruises or ships of opportunity mostly in the equatorial Atlantic, in the North Atlantic, in the southern Indian Ocean, in the southern Seas, Nordic Seas, and in the Arctic. The LOCEAN data set of the oxygen and hydrogen isotope (δ18O and δD) of marine water covers the period 1998 to 2019, but the effort is ongoing. Most data prior to 2010 (only δ18O) were analyzed using isotope ratio mass spectrometry (Isoprime IRMS) coupled with a Multiprep system (dual inlet method), whereas most data since 2010 (and a few earlier data) were obtained by cavity ring down spectrometry (CRDS) on a Picarro CRDS L2130-I, or less commonly on a Picarro CRDS L2120-I. Occasionally, some data were also run by Marion Benetti on an Isoprime IRMS coupled to a GasBench (dual inlet method) at the university of Iceland (Reykjavik). On the LOCEAN Picarro CRDS, most samples were initially analyzed after distillation, but since 2016, they have often been analyzed using a wire mesh to limit the spreading of sea salt in the vaporizer. Some of the samples on the CRDS were analyzed more than once on different days, when repeatability for the same sample was not sufficient or the daily run presented a too large drift. Accuracy is best when samples are distilled, and for δD are better on the Picarro CRDS L2130-I than on the Picarro CRDS L2120-I. Usually, we found that the reproducibility of the δ18O measurements is within ± 0.05 ‰ and of the δD measurements within ± 0.30 ‰, which should be considered an upper estimate of the error on the measurement on a Picarro CRDS. The water samples were kept in darkened glass bottles (20 to 50 ml) with special caps, and were often (but not always) taped afterwards. Once brought back in Paris, the samples were often stored in a cold room (with temperature close to 4°C), in particular if they were not analyzed within the next three months. There is however the possibility that some samples have breathed during storage. We found it happening on a number of samples, more commonly when they were stored for more than 5 years before being analyzed. We also used during one cruise bottles with not well-sealed caps (M/V Nuka Arctica in April 2019), which were analyzed within 3 months, but for which close to one third of the samples had breathed. We have retained those analyses, but added a flag ‘3’ meaning probably bad, at least on d-excess (outside of regions where sea ice forms or melts, for the analyses done on the Picarro CRDS, excessive evaporation is usually found with a d-excess criterium (which tends to be too low); for the IRMS analyses, it is mostly based when excessive scatter is found in the S- δ18O scatter plots or between successive data, in which case some outliers were flagged at ‘3’). In some cases when breathing happened, we found that d-excess can be used to produce a corrected estimate of δ18O and δD (Benetti et al., 2016). When this method was used a flag ‘1’ is added, indicating ‘probably good’ data, and should be thought as not as accurate as the data with no ‘correction’, which are flagged ‘2’ or ‘0’. We have adjusted data to be on an absolute fresh-water scale based on the study of Benetti et al. (2017), and on further tests with the different wire meshes used more recently. We have also checked the consistency of the runs in time, as there could have been changes in the internal standards used. On the Isoprime IRMS, it was mostly done using different batches of ‘Eau de Paris’ (EDP), whereas on the Picarro CRDS, we used three internal standards kept in metal tanks with a slight overpressure of dry air). The internal standards have been calibrated using VSMOW and GISP, and were also sent to other laboratories to evaluate whether they had drifted since the date of creation (as individual sub-standards have typically stored for more than 5-years). These comparisons are still not fully statisfactory to evaluate possible drifts in the sub-standards. Version V5 contains only one global file (ALL-Wisotopes-V5). However, up to version V4, individual files corresponded to regional subsets : - SO: Southern Ocean including cruise station and surface data mostly from 2017 in the Weddell Sea (WAPITI Cruise JR160004, DOI:10.17882/54012), as well as in the southern Ocean south of 20°S - SI: OISO cruise station and surface data in the southern Indian Ocean (since 1998) (DOI:10.18142/228) - EA: 20°N-20°S cruise station and surface data (since 2005), in particular in the equatorial Atlantic from French PIRATA (DOI:10.18142/14) and EGEE cruises (DOI:10.18142/95) - NA: 20°N-72°N station and surface data, mostly in the North Atlantic from Oceanographic cruises as well as from ships of opportunity (this includes in particular OVIDE cruise data since 2002 (DOI:10.17882/46448),  CATARINA, BOCATS1 and BOCATS2 (PID2019-104279GB-C21/AEI/10.13039/501100011033) cruises funded by the Spanish Research Agency, RREX2017 2017 cruise data (DOI:10.17600/17001400), SURATLANT data set since 2011 (DOI:10.17882/54517), Nuka Arctica and Tukuma Arctica data since 2012, STRASSE (DOI:10.17600/12040060) and MIDAS cruise data in 2012-2013, as well as surface data from various ships of opportunity since 2012) - NS: Nordic Sea data from cruises in 2002-2018 - AS: Arctic Ocean north of 72°N, in particular from two Tara cruises (in 2006-2008 and 2013) and expeditions since 2020 - PM: miscellaneous data in tropical Pacific, Indian Ocean, Mediterranean Sea and Black Sea In some regions, such as in the Indian Ocean, it is valuable to combine different subsets to have the full data distribution. The files are in csv format reported, and starting with version V1, it is reported as: - Cruise name, station id, bottle number, day, month, year, hour, minute, latitude, longitude, pressure (db), temperature (°C), it, salinity (pss-78), is, dissolved oxygen (micromol/kg), io2, δ18O, iO, d D, iD, d-excess, id, method type - Temperature is an in situ temperature - Salinity is a practical salinity it, is, io2, iO, iD, id are quality indices equal to: - 0 no quality check (but presumably good data) - 1 probably good data - 2 good data - 3 probably bad data - 4 certainly bad data - 9 missing data (and the missing data are reported with an unlikely missing value) The method type is 1 for IRMS measurements, 2 for CRDS measurement of a saline water sample, 3 for CRDS measurement of a distilled water sample. CISE-LOCEAN is housed by the LOCEAN laboratory and is part of the OSU ECCE Terra analytical facilities. Support by OSU ECCE Terra, by LOCEAN, and by various French national institutes and programs is gratefully acknowledged (including INSU/CNRS, IFREMER, IRD, IPEV, LEFE program, ANR GEOVIDE, IPSL), as well as support of different French ‘Services nationaux d’Observation’, such as PIRATA, SSS and OISO/CARAUS. Many of the data originate from cruises on French Research vessels: R.V. Suroit, Thalassa, Atalante, Marion Dufresne 2. Some data were collected during research cruises on non-French vessels, such as MIDAS in 2013 and BOCATS in 2016 on the Spanish R/V Sarmiento de Gamboa, HUD2014007 on Canadian R.V. Hudson, 2014 JR302 in 2014 and 2017 JR16004 cruises on U.K. HMS James Clarke Ross, the Arctic cruises in 2006-2008 and 2013 on French S.V. Tara, the Nordic seas MIZEX cruises in 2002-2004 on Swedish R.V. Oden, and the 2018 east Greenland cruise MSM76 on German R.V Maria S. Merian. The SURATLANT data were collected on merchant vessels with support of EIMSKIP in Iceland and the Nuka Arctica data set was collected on the merchant vessel Nuka Arctica from company RAL in Greenland. The WAPITI project received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (grant agreement 637770). Reverdin Gilles Waelbroeck Claire Pierre Catherine Akhoudas Camille Aloisi Giovanni Benetti Marion Bourlès Bernard Demange Jérôme Diverrès Denis Gascard Jean-Claude Le Goff Hervé Lherminier Pascale Lo Monaco Claire MERCIER Herle Metzl Nicolas Morisset Simon Naamar Aïcha Sallée Jean-Baptiste Thierry Virginie Holliday Penny Kanzow Torsten Yashayaev Igor Olafsdottir Solveig Houssais Marie-Noëlle Massé Guillaume Gontharet Swanne Millet Bruno Olivier Léa Speich Sabrina Testor Pierre Llido Jerome Kolodziejczyk Nicolas Cariou Thierry Rousselot Pierre Jacquin Stephane Ardyna mathieu Tremblay Jean-Eric LIQUE Camille Vilbergsdottir Kristin Crossin Florine waterisotopes-CISE-LOCEAN SEANOE https://www.seanoe.org/data/00600/71186/illustration.gif Physical oceanography Trace elements and their isotopes ODATIS aggregation parameters and Essential Variable names 2025-07-29 geonetwork.thesaurus.external.theme.NVS.OD1 Physical oceanography SeaDataNet Parameter Disciplines 2025-07-29 geonetwork.thesaurus.external.parameter.NVS.P08 SNO-OISO National Services Observation 2025-12-09 geonetwork.thesaurus.local.theme.SNO /Observational data/in-situ Type de jeux de donnée ODATIS 2025-12-09 geonetwork.thesaurus.local.theme.type_jeux_donnee CC-BY (Creative Commons - Attribution) Data are published without any warranty, express or implied. The user assumes all risk arising from his/her use of data. Data are intended to be research-quality and include estimates of data quality and accuracy, but it is possible that these estimates or the data themselves contain errors. It is the sole responsibility of the user to assess if the data are appropriate for his/her use, and to interpret the data, data quality, and data accuracy accordingly. Authors welcome users to ask questions and report problems (to be communicated to Gilles Reverdin) The PAGES CoralHydro2k Seawater δ¹⁸O Database: A FAIR-aligned compilation of seawater δ¹⁸O data to uncover 'hidden' insights from the global ocean 2025 Copernicus GmbH Atwood Alyssa R. Moore Andrea L. DeLong Kristine L. Long Sylvia E. Sanchez Sara C. Hargreaves Jessica A. Morris Chandler A. Pauly Raquel E. Dassie Emilie P. Felis Thomas Voelker Antje H. L. Murty Sujata A. Cobb Kim M. 10.5194/essd-2025-467 Freshwater Sources in the Global Ocean Through Salinity‐δ¹⁸O Relationships: A Machine Learning Solution to a Water Mass Problem 2025 American Geophysical Union (AGU) Davila Xabier McDonagh Elaine L. Jebri Fatma Gebbie Geoffrey Meredith Michael P. 10.1029/2024jc022122 Isotopic Compositions of Modern Seawater at the Mariana and Yap Trenches 2025 American Chemical Society (ACS) Lin Ying Pan Hongling Ta Kaiwen Qi Haiping Coplen Tyler B. Landais Amaelle Wu Nanping 10.1021/acsearthspacechem.5c00135 Drivers of diurnal and seasonal dynamics of triple oxygen isotopes in atmospheric water vapor and precipitation at a Mediterranean forest site 2025 Copernicus GmbH Voigt Claudia Vallet-Coulomb Christine Piel Clément Sauze Joana Reiter Ilja M. Orts Jean-Philippe Chalié Françoise Cassou Christophe Xueref-Remy Irène Alexandre Anne 10.5194/egusphere-2025-5879 Technical note: Large offsets between different datasets of sea water isotopic composition: an illustration of the need to reinforce intercalibration efforts 2024 Copernicus GmbH REVERDIN GILLES WAELBROECK CLAIRE VOELKER ANTJE MEYER HANNO 10.5194/egusphere-2024-3009 Isotopic evidence for an intensified hydrological cycle in the Indian sector of the Southern Ocean 2022 Research Square Platform LLC AKHOUDAS CAMILLE HAYATTE SALLÉE JEAN-BAPTISTE REVERDIN GILLES HAUMANN F. ALEXANDER PAUTHENET ETIENNE CHAPMAN CHRISTOPHER MARGIRIER FÉLIX MONACO CLAIRE LO METZL NICOLAS MEILLAND JULIE STRANNE CHRISTIAN 10.21203/rs.3.rs-1952513/v1 The CISE-LOCEAN seawater isotopic database (1998–2021) 2022 Copernicus GmbH Reverdin Gilles Waelbroeck Claire Pierre Catherine Akhoudas Camille 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 Herle Metzl Nicolas Morisset Simon Naamar Aïcha Reynaud Thierry Sallée Jean-Baptiste Thierry Virginie Hartman Susan E. Mawji Edward M. Olafsdottir Solveig Kanzow Torsten Velo Anton Voelker Antje Yashayaev Igor Haumann Alexander Leng Melanie J. Arrowsmith Carol Meredith Michael 10.5194/essd-14-2721-2022 The CISE-LOCEAN sea water isotopic database (1998–2021) 2022 Copernicus GmbH Reverdin Gilles Waelbroeck Claire Pierre Catherine Akhoudas Camille 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 Aïcha Reynaud Thierry Sallée Jean-Baptiste Thierry Virginie Hartman Susan E. Mawji Edward M. Olafsdottir Solveig Kanzow Torsten Voelker Antje Yashayaev Igor 10.5194/essd-2022-34 Ice Shelf Basal Melt and Influence on Dense Water Outflow in the Southern Weddell Sea 2020 American Geophysical Union (AGU) Akhoudas Camille Sallée Jean‐Baptiste Reverdin Gilles Aloisi Giovanni Benetti Marion Vignes Lucie Gelado Maria 10.1029/2019JC015710 Sources and distribution of fresh water around Cape Farewell in 2014 2019 American Geophysical Union (AGU) BENETTI M. REVERDIN G. CLARKE J.S. TYNAN E. HOLLIDAY N.P. TORRES‐VALDES S. LHERMINIER PASCALE YASHAYAEV I. 10.1029/2019JC015080 SURATLANT: a 1993-2017 surface sampling in the central part of the North Atlantic subpolar gyre 2018 Copernicus Gesellschaft Mbh REVERDIN GILLES METZL NICOLAS OLAFSDOTTIR SOLVEIG RACAPE VIRGINIE TAKAHASHI TARO BENETTI MARION VALDIMARSSON HEDINN BENOIT-CATTIN ALICE DANIELSEN MAGNUS FIN JONATHAN NAAMAR AICHA PIERROT DENIS SULLIVAN KEVIN BRINGAS FRANCIS GONI GUSTAVO 10.5194/essd-10-1901-2018 Stable isotopes in surface waters of the Atlantic Ocean: Indicators of ocean-atmosphere water fluxes and oceanic mixing processes 2017 Amer Geophysical Union BENETTI M. REVERDIN G. ALOISI G. SVEINBJORNSDOTTIR A. 10.1002/2017JC012712 Composition of freshwater in the spring of 2014 on the southern Labrador shelf and slope 2017 Amer Geophysical Union BENETTI M. REVERDIN G. LIQUE CAMILLE YASHAYAEV I. HOLLIDAY N. P. TYNAN E. TORRES-VALDES S. LHERMINIER PASCALE TREGUER P. SARTHOU G. 10.1002/2016JC012244 Inter-comparison of salt effect correction for δ18O and δ2H measurements in seawater by CRDS and IRMS using the gas-H2O equilibration method 2017 Elsevier BV Benetti M. Sveinbjörnsdóttir A.E. Ólafsdóttir R. Leng M.J. Arrowsmith C. Debondt K. Fripiat F. Aloisi G. 10.1016/j.marchem.2017.05.010 Variability of sea ice melt and meteoric water input in the surface Labrador Current off Newfoundland 2016 Amer Geophysical Union BENETTI M. REVERDIN G. PIERRE C. KHATIWALA S. TOURNADRE B. OLAFSDOTTIR S. NAAMAR A. 10.1002/2015JC011302 SURATLANT: a surface dataset in the central part of the North Atlantic subpolar gyre 2025 SEANOE Reverdin Gilles Metzl Nicolas Olafsdottir Solveig Racapé Virginie Takahashi Taro Benetti Marion Valdimarsson Hedinn Quay Paul D. Benoit-Cattin Alice Danielsen Magnus Fin Jonathan Naamar Aïcha Pierrot Denis Sullivan Kevin Bringas Francis Goni Gustavo Becker Meike Leseurre Coraline Olsen Are 10.17882/54517 BOCATS2 2023 Cruise data along the A25-OVIDE section 2023 SEANOE Lherminier Pascale Velo Anton Perez Fiz F. Le Bihan Caroline Hamon Michel Le Bot Philippe Bajon Raphael Chenal Aliette Cosme Ludovic Lopez Fernandez Javier Ernst Jakob Padin Xose Antonio Lasa Gonzales Aide Fernàndez Castro Bieito Fernández Román Daniel 10.17882/95607 GO-SHIP A25 - OVIDE 2018 Cruise data 2022 SEANOE Lherminier Pascale Perez Fiz F. Branellec Pierre Mercier Herle Velo Anton Messias Marie-José Castrillejo Maxi Reverdin Gilles Fontela Marcos Baurand Francois 10.17882/87394 Reykjanes Ridge Experiment (RREX) dataset 2018 SEANOE Thierry Virginie Mercier Herle Petit Tillys Branellec Pierre Balem Kevin Lherminier Pascale 10.17882/55445 10.18142/95 10.18142/228 10.18142/140 10.18142/14 10.17600/17001400 10.17600/12040060 oceans -180.0 180.0 -83.0 90.0 1998 2024 CSV TEXTE https://www.seanoe.org/data/00600/71186/#120560 WWW:DOWNLOAD-1.0-link--download Quality controlled data Wisotopes-V5 in TXT format (1998-2024 data) - 1 MB https://www.seanoe.org/data/00600/71186/ WWW:DOWNLOAD-1.0-link--download Quality controlled data Wisotopes-V4 in TXT format (1998-2023 data) [RESTRICTED] - 287 KB https://www.seanoe.org/data/00600/71186/ WWW:DOWNLOAD-1.0-link--download Quality controlled data Wisotopes-V3 in CSV format (1998-2022 data) [RESTRICTED] - 218 KB https://www.seanoe.org/data/00600/71186/ WWW:DOWNLOAD-1.0-link--download Quality controlled data Wisotopes-V3 in TXT format (1998-2022 data) [RESTRICTED] - 230 KB https://www.seanoe.org/data/00600/71186/ WWW:DOWNLOAD-1.0-link--download Quality controlled data Wisotopes-V2 (1998-2021 data) [RESTRICTED] - 181 KB https://www.seanoe.org/data/00600/71186/ WWW:DOWNLOAD-1.0-link--download Quality controlled data Wisotopes-V1 (1998-2020 data) [RESTRICTED] - 776 KB https://www.seanoe.org/data/00600/71186/ WWW:DOWNLOAD-1.0-link--download Quality controlled data SO-Wisotopes-V0 (1998-2019 data) [RESTRICTED] - 16 KB https://doi.org/10.17882/71186 WWW:LINK-1.0-http--metadata-URL DOI of the product https://www.seanoe.org/data/00600/71186/ rel-canonical Seanoe