seanoe:57288 Athanase Marylou Laboratoire LOCEAN-IPSL, Sorbonne Universites (UPMC, Univ. Paris 6)-CNRS-IRD-MNHN, Paris, France 2024-02-07 ISO 19115:2003/19139 1.0 Arctic Western Eurasian Basin: IAOOS 23 and IAOOS 24 ocean CTD-DO, CDOM and nitrate profiles in 2017 2017-04-12 2024-02-07 Provost Christine, Koenig Zoé, Sennéchael Nathalie, Athanase Marylou, Labaste Matthieu, Garçon Véronique (2017). Arctic Western Eurasian Basin: IAOOS 23 and IAOOS 24 ocean CTD-DO, CDOM and nitrate profiles in 2017. SEANOE. https://doi.org/10.17882/57288 The two platforms IAOOS 23 and IAOOS 24 were deployed within 600 m from each other at the North Pole from the Russia-operated Barneo ice camp on April 12, 2017. They followed a meandering trajectory, reaching as far as 30°E in the Nansen Basin, before turning back to the western Fram Strait. On both IAOOS 23 and 24, the ocean profiler was a PROVOR SPI (from French manufacturer NKE) equipped with a Seabird SBE41 CTD (Conductivity, Temperature, Depth) and a dissolved oxygen (DO) Aandera 4330 optode. For the first time, the profiler on IAOOS 23 also carried biogeochemical sensors. It featured a bio-optics sensor suite and a submersible ultraviolet nitrate analyzer (SUNA, Satlantic-Seabird Inc.). The bio-optics sensor suite (called Pack Rem A) combines a three-optical-sensor instrument (ECO Triplet, WET Labs Inc.) and a multispectral radiometer (OCR-504, Satlantic Inc.). The present dataset is composed of CTD-DO data from IAOOS 23 and 24, corrected from the thermal lag and the sensor lag, despiked and interpolated vertically every 0.5 m. It also comprises nitrate concentrations from the SUNA and CDOM fluorescence from the WETLabs ECO sensor on IAOOS 23. Other biogeochemical data will be added to this dataset. The profilers were set to perform two upward profiles a day from 250 m (IAOOS 23) and 350 m (IAOOS 24) upward starting at approximately 6 am and 6 pm. They provided a unique 8-month long dataset, gathering a total of 793 profiles of the temperature, salinity and oxygen (upper 350m) and 427 profiles of CDOM and nitrates concentrations (upper 250m).   We thank Victoire Rérolle and Sergei Pisarev for their contribution to IAOOS platforms preparation and deployment. The IAOOS platforms were developed with funding from Equipex IAOOS (Ice Atmosphere Ocean Observing System) (ANR-10- EQPX-32-01), and biogeochemical sensors added to the platform through funding from the ICE-ARC program from the European Union 7th Framework Progamme (grant number 603887). Provost Christine Laboratoire LOCEAN-IPSL, Sorbonne Universites (UPMC, Univ. Paris 6)-CNRS-IRD-MNHN, Paris, France Koenig Zoé Laboratoire LOCEAN-IPSL, Sorbonne Universites (UPMC, Univ. Paris 6)-CNRS-IRD-MNHN, Paris, France Sennéchael Nathalie Laboratoire LOCEAN-IPSL, Sorbonne Universites (UPMC, Univ. Paris 6)-CNRS-IRD-MNHN, Paris, France Athanase Marylou Laboratoire LOCEAN-IPSL, Sorbonne Universites (UPMC, Univ. Paris 6)-CNRS-IRD-MNHN, Paris, France Labaste Matthieu Laboratoire LOCEAN-IPSL, Sorbonne Universites (UPMC, Univ. Paris 6)-CNRS-IRD-MNHN, Paris, France Garçon Véronique Laboratoire d'Etudes en Géophysique et d'Océanographie Spatiales (LEGOS), Toulouse, France SEANOE https://www.seanoe.org/data/00461/57288/illustration.gif Drift trajectory of IAOOS 23 and 24 platforms from April 12 2017 to January 4 2018. Color code is time, bathymetry (IBCAO) is in greyscale with yellow isolines at 0, 500, 700, 1000, 2000 and 3200 m. Magenta lines delineate the 4 regions: (1) the Amundsen Basin, (2) the Gakkel Ridge, (3) the Nansen Basin and (4) the western Fram Strait and Greenland continental slope. Black line at 88.2°N indicates a frontal zone. Black circles indicate the 4 crossover points (A, B, C and D). Brown circles indicate the location of two halocline eddies (HE1 and HE2) and brown boxes the location of two AW mesoscale structures (AW1 and AW2). Arctic Ocean profiles Temperature Salinity Oxygen Colored Dissolved Organic Matter Nitrate Hydrography Biogeochemistry Eurasian Basin Physical oceanography FP7 ICE-ARC (Agreement: 603887) Dissolved oxygen Nutrients Pressure Salinity Sea temperature Turbidity 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 /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 risks arising from his/her use of data. Data are intended to be research-quality. 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. Changes in Freshwater Distribution and Pathways in the Arctic Ocean Since 2007 in the Mercator Ocean Global Operational System 2022 American Geophysical Union (AGU) Bertosio Cécilia Provost Christine Athanase Marylou Sennéchael Nathalie Garric Gilles Lellouche Jean‐Michel Bricaud Clément Kim Joo‐Hong Cho Kyoung‐Ho Park Taewook 10.1029/2021JC017701 Atlantic Water modification North of Svalbard in the Mercator Physical System from 2007 to 2020 2020 American Geophysical Union (AGU) Athanase Marylou Provost Christine Pérez‐Hernández M. Dolores Sennéchael Nathalie Bertosio Cécilia Artana Camila Garric Gilles Lellouche Jean‐Michel 10.1029/2020JC016463 The Western Eurasian Basin Halocline in 2017: Insights From Autonomous NO Measurements and the Mercator Physical System 2020 American Geophysical Union (AGU) Bertosio Cécilia Provost Christine Sennéchael Nathalie Artana Camila Athanase Marylou Boles Elisabeth Lellouche Jean‐Michel Garric Gilles 10.1029/2020JC016204 Under‐Ice Phytoplankton Blooms in the Central Arctic Ocean: Insights From the First Biogeochemical IAOOS Platform Drift in 2017 2020 American Geophysical Union (AGU) Boles Elisabeth Provost Christine Garçon Véronique Bertosio Cécilia Athanase Marylou Koenig Zoé Sennéchael Nathalie 10.1029/2019JC015608 New hydrographic measurements of the upper Arctic Western Eurasian Basin in 2017 reveal fresher mixed layer and shallower warm layer than 2005-2012 climatology 2019 American Geophysical Union (AGU) Athanase Marylou Sennéchael Nathalie Garric Gilles Koenig Zoé Boles Elisabeth Provost Christine 10.1029/2018JC014701 Arctic Western Eurasian Basin: IAOOS 23 physical and biogeochemical profiles in 2017 2017 SEANOE Provost Christine Sennéchael Nathalie Garçon Véronique Boles Elisabeth Athanase Marylou Koenig Zoé Labaste Matthieu 10.17882/59183 oceans 30.0 60.0 78.0 90.0 2017-04-12 2018-01-04 NC, NETCDF https://www.seanoe.org/data/00461/57288/data/59392.nc WWW:DOWNLOAD-1.0-link--download Processed data IAOOS 23 profiler CTD-DO data from 2017 Arctic Eurasian Basin - 21 MB https://www.seanoe.org/data/00461/57288/data/59393.nc WWW:DOWNLOAD-1.0-link--download Processed data IAOOS 24 profiler CTD-DO data from 2017 Arctic Eurasian Basin - 18 MB https://www.seanoe.org/data/00461/57288/data/59394.nc WWW:DOWNLOAD-1.0-link--download Processed data IAOOS 23 profiler CDOM data from 2017 Arctic Eurasian Basin - 8 MB https://www.seanoe.org/data/00461/57288/data/59395.nc WWW:DOWNLOAD-1.0-link--download Processed data IAOOS 23 profiler nitrate data from 2017 Arctic Eurasian Basin - 1007 KB https://doi.org/10.17882/57288 DOI DOI of the product https://www.seanoe.org/data/00461/57288/ rel-canonical Seanoe On both IAOOS 23 and 24 plaforms, the ocean profiler was a PROVOR SPI (from French manufacturer NKE) equipped with a Seabird SBE41 CTD (Conductivity, Temperature, Depth) and a dissolved oxygen (DO) Aandera 4330 optode. For the first time, the profiler on IAOOS 23 also carried a bio-optics sensor suite and a submersible ultraviolet nitrate analyzer (SUNA, Satlantic-Seabird Inc.). The bio-optics sensor suite (called Pack Rem A) combines a three-optical-sensor instrument (ECO Triplet, WET Labs Inc.) and a multispectral radiometer (OCR-504, Satlantic Inc.).