19 results on '"Reynaud, Thierry"'
Search Results
2. The CISE-LOCEAN seawater isotopic database (1998–2021)
- Author
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Reverdin, Gilles, primary, Waelbroeck, Claire, additional, Pierre, Catherine, additional, Akhoudas, Camille, additional, Aloisi, Giovanni, additional, Benetti, Marion, additional, Bourlès, Bernard, additional, Danielsen, Magnus, additional, Demange, Jérôme, additional, Diverrès, Denis, additional, Gascard, Jean-Claude, additional, Houssais, Marie-Noëlle, additional, Le Goff, Hervé, additional, Lherminier, Pascale, additional, Lo Monaco, Claire, additional, Mercier, Herlé, additional, Metzl, Nicolas, additional, Morisset, Simon, additional, Naamar, Aïcha, additional, Reynaud, Thierry, additional, Sallée, Jean-Baptiste, additional, Thierry, Virginie, additional, Hartman, Susan E., additional, Mawji, Edward W., additional, Olafsdottir, Solveig, additional, Kanzow, Torsten, additional, Velo, Anton, additional, Voelker, Antje, additional, Yashayaev, Igor, additional, Haumann, F. Alexander, additional, Leng, Melanie J., additional, Arrowsmith, Carol, additional, and Meredith, Michael, additional
- Published
- 2022
- Full Text
- View/download PDF
3. Regards croisés sur les évolutions et mutations des métiers de BIATSS et d’enseignant-chercheur
- Author
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Bernard, Sébastien, Deveze-Delaunay, Stéphanie, Eyraud, Corinne, Nande, Florence, Reynaud, Thierry, Pierronnet, Romain, Centre de Recherche Juridique (CRJ), Université de La Réunion (UR), Laboratoire d'Economie et de Sociologie du Travail (LEST), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Montpellier Research in Management (MRM), Université de Perpignan Via Domitia (UPVD)-Université de Montpellier (UM), Centre Européen de Recherche en Economie Financière et Gestion des Entreprises (CEREFIGE), Université de Lorraine (UL), and IAE Montpellier
- Subjects
IAE ,réforme ,Master ,lru ,université ,enseignants chercheurs ,formation ,enseignement supérieur ,MUTI ,Montpellier ,[SHS.GESTION]Humanities and Social Sciences/Business administration ,BIATSS ,recherche ,ComputingMilieux_MISCELLANEOUS ,management - Abstract
National audience
- Published
- 2022
4. The CISE-LOCEAN sea water isotopic database (1998–2021)
- Author
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Reverdin, Gilles, primary, Waelbroeck, Claire, additional, Pierre, Catherine, additional, Akhoudas, Camille, additional, Aloisi, Giovanni, additional, Benetti, Marion, additional, Bourlès, Bernard, additional, Danielsen, Magnus, additional, Demange, Jérôme, additional, Diverrès, Denis, additional, Gascard, Jean-Claude, additional, Houssais, Marie-Noëlle, additional, Le Goff, Hervé, additional, Lherminier, Pascale, additional, Lo Monaco, Claire, additional, Mercier, Herlé, additional, Metzl, Nicolas, additional, Morisset, Simon, additional, Naamar, Aïcha, additional, Reynaud, Thierry, additional, Sallée, Jean-Baptiste, additional, Thierry, Virginie, additional, Hartman, Susan E., additional, Mawji, Edward M., additional, Olafsdottir, Solveig, additional, Kanzow, Torsten, additional, Voelker, Antje, additional, and Yashayaev, Igor, additional
- Published
- 2022
- Full Text
- View/download PDF
5. The CISE-LOCEAN sea water isotopic database (1998-2021).
- Author
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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, Goff, Hervé Le, Lherminier, Pascale, Monaco, Claire Lo, Mercier, Herlé, Metzl, Nicolas, Morisset, Simon, Naamar, Aïcha, and Reynaud, Thierry
- Subjects
SEAWATER ,CAVITY-ringdown spectroscopy ,TIME series analysis ,MASS spectrometry ,TIMESTAMPS - Abstract
The characteristics of the CISE-LOCEAN sea water isotope data set (δ
18 O, δ²H, later designed as δD) are presented. This data set covers the time period from 1998 to 2021 and currently includes close to 8000 data entries, all with δ18 O, three quarters of them also with δD, associated with a time and space stamp and usually a salinity measurement. Until 2010, samples were analysed by isotopic ratio mass spectrometry, and since then mostly by cavity ring-down spectroscopy (CRDS). Instrumental uncertainty on individual data in this dataset is usually with a standard deviation as low as 0.03 / 0.15 ‰ for δ18 O and δD. An additional uncertainty is related to uncertain isotopic composition of the in-house standards that are used to convert daily data into the VSMOW scale. Different comparisons suggest that since 2010 the latter have remained within at most 0.03 / 0.20 ‰ for δ18 O and δD. Therefore, combining the two suggests a standard deviation of at most 0.05 / 0.25 ‰ for δ18 O / δD. Finally, 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. This adds an uncertainty on the adjusted data of roughly 0.05 / 0.10 ‰ on δ18 O and 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 on the order of or less than 0.03 / 0.15 ‰ for δ18 O / δD. On the other hand, 17 comparisons with duplicate sea water data analysed in other laboratories or with other data sets in deep regions suggest a larger scatter. When averaging the 17 comparisons done for δ18 O, we find a difference close to the adjustment applied at LOCEAN to convert salty water data from the activity to the concentration scale. Such a difference is expected, but the scatter found suggests that care is needed when merging datasets from different laboratories. Examples of time series in the surface North Atlantic subpolar gyre illustrate the temporal changes in water isotope composition that can be detected with a carefully validated dataset. [ABSTRACT FROM AUTHOR]- Published
- 2022
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6. Le voilier OceanoScientific Explorer Boogaloo : Une campagne péri-antarctique en 2017
- Author
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Reverdin, Gilles, primary, Metzl, Nicolas, additional, Reynaud, Thierry, additional, Poli, Paul, additional, and Griboval, Yvan, additional
- Published
- 2020
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- View/download PDF
7. OVIDE 2018. CTD-O2 Data report
- Author
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Branellec, Pierre, Lherminier, Pascale, Reynaud, Thierry, and Le Bihan, Caroline
- Abstract
OVIDE 2018 cruise focused on the 9th repetition of the OVIDE section. OVIDE cruises have been run biennially since 2002, always in June-July, and the section is labelled as a high-resolution reference section in the international program GO-SHIP. OVIDE 2018 started in Brest on June 11 and ended in Brest on July 14 on the N/O Thalassa. The 98 stations of the OVIDE section, from Portugal to the tip of Greenland, were cast within 3 weeks, and 6 stations were added afterwards in the Bight Fracture Zone. The core of the work consisted in acquiring surface-to-bottom hydrographic profiles of pressure, temperature, salinity and dissolved oxygen, and analyzing 20 physical and biogeochemical tracers from 17500 samples drawn from the Niskin bottles of the CTD frame. We report here an overview of the cruise operations and team, followed by a focus on the acquisition and calibration steps of the physical variables measured specifically by the hydrographic CTD-O2 probe. After calibration, we find precisions for pressure, temperature, salinity and dissolved oxygen that fit the GO-SHIP international quality requirements. Pressure and temperature were calibrated at the laboratory before and after the cruise, leading to a precision of 1 dbar and 0.001 ��C respectively. The calibration of salinity and dissolved oxygen data is obtained by applying polynomial correcting functions that are calculated to statistically minimize the differences between the probe data and the sample data analyzed on board in the chemistry container. These chemical data are also evaluated by the comparison of replicates. After calibration, the differences in salinity and oxygen follow a zero-centered Gaussian-like distribution which standard deviation is used to evaluate the probe precision for each variable. For salinity, we find a standard deviation of 0.001, and for oxygen, 0.03 ml/l (or 1.3 ��mol/kg). The oxygen uncertainty could be reduced to 1 ��mol/kg after correcting for isopycnal heave. Those numbers correspond to a 68 % confidence interval and must be doubled to obtain the precision within a 95 % confidence interval., La campagne OVIDE 2018 portait sur la 9��me r��p��tition de la section OVIDE. Les campagnes OVIDE ont lieu tous les deux ans depuis 2002, toujours en juin-juillet, et la section est labellis��e comme section de r��f��rence �� haute r��solution dans le programme international GO-SHIP. OVIDE 2018 a d��but�� �� Brest le 11 juin et s'est termin��e �� Brest le 14 juillet sur le N/O Thalassa. Les 98 stations de la section OVIDE, du Portugal �� la pointe du Groenland, ont ��t�� effectu��es en 3 semaines, et 6 stations ont ensuite ��t�� ajout��es ensuite dans la zone de fracture Bight. L'essentiel du travail a consist�� �� acqu��rir des profils hydrographiques surface-fond de pression, temp��rature, salinit�� et oxyg��ne dissous, et �� analyser 20 traceurs physiques et biog��ochimiques �� partir de 17500 ��chantillons pr��lev��s dans les bouteilles Niskin. Nous pr��sentons ici un aper��u des op��rations de la campagne et de l'��quipe, puis nous nous concentrons sur les ��tapes d'acquisition et d'ajustage des variables physiques mesur��es sp��cifiquement par la sonde hydrographique CTD-O2. Apr��s ��talonnage, nous trouvons des pr��cisions pour la pression, la temp��rature, la salinit�� et l'oxyg��ne dissous qui correspondent aux exigences de qualit�� internationales de GO-SHIP. La pression et la temp��rature ont ��t�� calibr��es au laboratoire avant et apr��s la campagne, conduisant �� une pr��cision de 1 dbar et 0,001 ��C respectivement. L'��talonnage des donn��es de salinit�� et d'oxyg��ne dissous est obtenu en appliquant des fonctions de correction polynomiales qui sont calcul��es pour minimiser statistiquement les diff��rences entre les donn��es de la sonde et les donn��es de l'��chantillon analys�� �� bord dans le conteneur de chimie. Ces donn��es chimiques sont ��galement ��valu��es par la comparaison de r��plicats. Apr��s ajustage, les diff��rences de salinit�� et d'oxyg��ne suivent une distribution de type gaussienne centr��e sur z��ro dont l'��cart-type est utilis�� pour ��valuer la pr��cision de la sonde pour chaque variable. Pour la salinit��, nous trouvons un ��cart-type de 0,001, et pour l'oxyg��ne, 0,03 ml/l (ou 1,3 ��mol/kg). L'incertitude sur l'oxyg��ne pourrait ��tre r��duite �� 1 ��mol/kg d'apr��s la correction de la profondeur des isopycnes. Ces chiffres correspondent �� un intervalle de confiance de 68 % et doivent ��tre doubl��s pour obtenir la pr��cision dans un intervalle de confiance de 95 %.
- Published
- 2019
- Full Text
- View/download PDF
8. Expédition OceanoScientific 2016-2017 : Etudes des mesures de température et de salinité de surface
- Author
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Reynaud, Thierry, Reverdin, Gilles, Metzl, Nicolas, and Griboval, Yvan
- Subjects
Oceanoscientific ,température ,surface ,temperature ,antarctic ,Mesures ,measurements ,Boogaloo ,Antarctique ,SSS ,salinité ,salinity ,SST - Abstract
The OceanoScientific Programm was initiated in 2006 and yielded the creation of a specific equipment : the OSC-System. The OSC-System measures physical parameters at the air-sea interface including Sea Surface temperature and Salinity. An OSC-System was installed on board of the OceanoScientific Explorer Boogaloo sailing ship. A cruise around the world was initiated the 17/11/2016 and ended 02/06/2017 including 60 days south of 40°S. Sea Surface temperature and salinity collected along this cruise are discussed in this technical report., Le Programme OceanoScientific initié en 2006 a permis la création d’un équipement spécifique : l’OSC System, pour mesurer des paramètres physiques à l’interface air-mer. Des mesures de température et salinité sont ainsi effectuées par cet équipement à la surface des océans. Le voilier OceanoScientific Explorer "Boogaloo" équipé de l’OSC System a effectué un tour du monde du 17/11/2016 au 02/06/2017, dont 60 jours sous le 40e Sud, objet du présent rapport. Les mesures de température et de salinité collectées lors de cette campagne sont discutées dans ce rapport ainsi que le fonctionnement du thermo-salinomètre.
- Published
- 2018
9. On the seasonal variability and eddies in the North Brazil Current: insights from model intercomparison experiments
- Author
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Barnier, Bernard, Reynaud, Thierry, Beckmann, Aike, Böning, Claus, Molines, Jean-Marc, Barnard, Sally, and Jia, Yanli
- Published
- 2001
- Full Text
- View/download PDF
10. Data Descriptor: Stable isotopes in the atmospheric marine boundary layer water vapour over the Atlantic Ocean, 2012-2015
- Author
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Benetti, Marion, Steen-larsen, Hans Christian, Reverdin, Gilles, Sveinbjornsdottir, Arny Erla, Aloisi, Giovanni, Berkelhammer, Max B., Bourles, Bernard, Bourras, Denis, De Coetlogon, Gaelle, Cosgrove, Ann, Faber, Anne-katrine, Grelet, Jacques, Hansen, Steffen Bo, Johnson, Rod, Legoff, Herve, Martin, Nicolas, Peters, Andrew J., Popp, Trevor James, Reynaud, Thierry, and Winther, Malte
- Abstract
The water vapour isotopic composition ( (H2O)-H-1-O-16, (H2O)-O-18 and (HHO)-H-1-H-2-O-16) of the Atlantic marine boundary layer has been measured from 5 research vessels between 2012 and 2015. Using laser spectroscopy analysers, measurements have been carried out continuously on samples collected 10-20 meter above sea level. All the datasets have been carefully calibrated against the international VSMOW-SLAP scale following the same protocol to build a homogeneous dataset covering the Atlantic Ocean between 4 degrees S to 63 degrees N. In addition, standard meteorological variables have been measured continuously, including sea surface temperatures using calibrated Thermo-Salinograph for most cruises. All calibrated observations are provided with 15-minute resolution. We also provide 6-hourly data to allow easier comparisons with simulations from the isotope-enabled Global Circulation Models. In addition, backwards trajectories from the HYSPLIT model are supplied every 6-hours for the position of our measurements.
- Published
- 2017
11. Stable isotopes in the atmospheric marine boundary layer water vapour over the Atlantic Ocean, 2012–2015
- Author
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Benetti, Marion, primary, Steen-Larsen, Hans Christian, additional, Reverdin, Gilles, additional, Sveinbjörnsdóttir, Árný Erla, additional, Aloisi, Giovanni, additional, Berkelhammer, Max B., additional, Bourlès, Bernard, additional, Bourras, Denis, additional, de Coetlogon, Gaëlle, additional, Cosgrove, Ann, additional, Faber, Anne-Katrine, additional, Grelet, Jacques, additional, Hansen, Steffen Bo, additional, Johnson, Rod, additional, Legoff, Hervé, additional, Martin, Nicolas, additional, Peters, Andrew J., additional, Popp, Trevor James, additional, Reynaud, Thierry, additional, and Winther, Malte, additional
- Published
- 2017
- Full Text
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12. Mesures de température et salinité de surface sur voiliers d’opportunité. Bilan 2014
- Author
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Reynaud, Thierry, Desprez De Gesincourt, Floriane, and Gaillard, Fabienne
- Abstract
Sea surface temperature and salinity measurements complete the ocean global observation network. Such measurements are installed on research and commercial ships. Observations are now obtained from voluntary sailing ships using smaller sensors. Some of these instruments also measured atmospheric parameters near the ocean-atmosphere interface. The oceanic data from the Oceanoscientific program and from NKE-STPS sensors were validated at the Laboratoire de Physique des Océans (LPO). This report summarizes the work done in 2014, the data validated and the behavior of sensors., Les données de température et de salinité de surface des océans complètent les réseaux globaux d’observation. Des telles mesures sont effectuées sur les navires de recherche et sur certains navires de commerce. Des sondes sont déployées maintenant sur des voiliers d’opportunités utilisant des capteurs plus compacts. Certains de ces instruments permettent aussi des mesures atmosphériques à proximité de l’interface air/mer. Les données océaniques issues du programme Oceanoscientific et des sondes NKE-STPS sont traitées au Laboratoire de Physique des Océans (LPO). Ce rapport synthétise les efforts déployés en 2014 au LPO, les campagnes traitées et le comportement des capteurs.
- Published
- 2015
13. ARGO based statistics for climate monitoring
- Author
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Gaillard, Fabienne, Reynaud, Thierry, Von Schuckmann, Karina, Roquet, Fabien, Prigent, Annaig, and Lagadec, Catherine
- Abstract
The Argo array, by offering simultaneously global coverage and high vertical resolution, made the monitoring of inter-annual and decadal variability of the ocean interior possible. In the ARIVO project, we have initiated the production of gridded monthly fields of temperature and salinity using an optimal analysis tool and designed an iterative approach to combine near-real time and delayed mode data. The monthly gridded fields are averaged over time to produce the reference state needed by climatological studies, dynamical modeling and reconstruction methods themselves. Higher degree statistics such as variances and extreme values are later derived. Global indices (heat content, dynamical height) and corresponding error bars are also computed. Sensitivity tests and careful examination of the analysis results have been performed to detect biases and inconsistencies. A strategy is proposed to reduce these errors and produce a coherent statistical representation of the first decade of the third millennium.
- Published
- 2012
14. Complementary study n°2 search of the AF447 wreckage area
- Author
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Ollitrault, Michel and Reynaud, Thierry
- Published
- 2011
15. A new analysis of hydrographic data in the Atlantic and its application to an inverse modeling study
- Author
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Reynaud, Thierry, Le Grand, Pascal, Mercier, Herle, and Barnier, Bernard
- Published
- 1998
16. DYNAMO : dynamics of North Atlantic models : simulation and assimilation with high resolution models
- Author
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Barnard, Sally, Barnier, Bernard, Beckmann, Aike, Böning, Claus W., Coulibaly, Macky, DeCuevas, D'Arcy, Dengg, Joachim, Dietrich, Christian, Ernst, Ute, Herrmann, Peter, Jia, Yanli, Killworth, Peter D., Kröger, Jürgen, Lee, Mei-Man, LeProvost, Christian, Molines, Jean-Marc, New, Adrian L., Oschlies, Andreas, Reynaud, Thierry, West, Luke J., and Willebrand, Jürgen
- Subjects
010504 meteorology & atmospheric sciences ,010505 oceanography ,14. Life underwater ,01 natural sciences ,0105 earth and related environmental sciences - Abstract
Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel No 294
- Published
- 1997
- Full Text
- View/download PDF
17. Summer mean circulation of the northwestern Atlantic Ocean
- Author
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Reynaud, Thierry H., primary, Weaver, Andrew J., additional, and Greatbatch, Richard J., additional
- Published
- 1995
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18. Propagation of coastal‐trapped waves under an ice cover in Hudson Bay*
- Author
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Reynaud, Thierry, primary, Ingram, R. Grant, additional, Freeland, Howard J., additional, and Weaver, Andrew J., additional
- Published
- 1992
- Full Text
- View/download PDF
19. Expédition OceanoScientific 2016-2017 : Etudes des mesures de température et de salinité de surface
- Author
-
Reynaud, Thierry, Reverdin, Gilles, Metzl, Nicolas, and Griboval, Yvan
- Subjects
Oceanoscientific ,temperature ,antarctic ,Mesures ,Boogaloo ,Antarctique ,SSS ,salinity ,SST ,13. Climate action ,température ,surface ,14. Life underwater ,measurements ,salinité - Abstract
The OceanoScientific Programm was initiated in 2006 and yielded the creation of a specific equipment : the OSC-System. The OSC-System measures physical parameters at the air-sea interface including Sea Surface temperature and Salinity. An OSC-System was installed on board of the OceanoScientific Explorer Boogaloo sailing ship. A cruise around the world was initiated the 17/11/2016 and ended 02/06/2017 including 60 days south of 40°S. Sea Surface temperature and salinity collected along this cruise are discussed in this technical report., Le Programme OceanoScientific initié en 2006 a permis la création d’un équipement spécifique : l’OSC System, pour mesurer des paramètres physiques à l’interface air-mer. Des mesures de température et salinité sont ainsi effectuées par cet équipement à la surface des océans. Le voilier OceanoScientific Explorer "Boogaloo" équipé de l’OSC System a effectué un tour du monde du 17/11/2016 au 02/06/2017, dont 60 jours sous le 40e Sud, objet du présent rapport. Les mesures de température et de salinité collectées lors de cette campagne sont discutées dans ce rapport ainsi que le fonctionnement du thermo-salinomètre.
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