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1. Dynamics of particulate organic matter composition in coastal systems: Forcing of spatio-temporal variability at multi-systems scale

Author

Liénart, Camilla, Savoye, Nicolas, David, Valérie, Ramond, Pierre, Rodriguez Tress, Paco, Hanquiez, Vincent, Marieu, Vincent, Aubert, Fabien, Aubin, Sébastien, Bichon, Sabrina, Boinet, Christophe, Bourasseau, Line, Bozec, Yann, Bréret, Martine, Breton, Elsa, Caparros, Jocelyne, Cariou, Thierry, Claquin, Pascal, Conan, Pascal, Corre, Anne-Marie, Costes, Laurence, Crouvoisier, Muriel, Del Amo, Yolanda, Derriennic, Hervé, Dindinaud, François, Duran, Robert, Durozier, Maïa, Devesa, Jérémy, Ferreira, Sophie, Feunteun, Eric, Garcia, Nicole, Geslin, Sandrine, Grossteffan, Emilie, Gueux, Aurore, Guillaudeau, Julien, Guillou, Gaël, Jolly, Orianne, Lachaussée, Nicolas, Lafont, Michel, Lagadec, Véronique, Lamoureux, Jézabel, Lauga, Béatrice, Lebreton, Benoît, Lecuyer, Eric, Lehodey, Jean-Paul, Leroux, Cédric, L'Helguen, Stéphane, Macé, Eric, Maria, Eric, Mousseau, Laure, Nowaczyk, Antoine, Pineau, Philippe, Petit, Franck, Pujo-Pay, Mireille, Raimbault, Patrick, Rimmelin-Maury, Peggy, Rouaud, Vanessa, Sauriau, Pierre-Guy, Sultan, Emmanuelle, and Susperregui, Nicolas

Published
2018
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2. Dynamics of particulate organic matter composition in coastal systems: A spatio-temporal study at multi-systems scale

Author

Liénart, Camilla, Savoye, Nicolas, Bozec, Yann, Breton, Elsa, Conan, Pascal, David, Valérie, Feunteun, Eric, Grangeré, Karine, Kerhervé, Philippe, Lebreton, Benoît, Lefebvre, Sébastien, L'Helguen, Stéphane, Mousseau, Laure, Raimbault, Patrick, Richard, Pierre, Riera, Pascal, Sauriau, Pierre-Guy, Schaal, Gauthier, Aubert, Fabien, Aubin, Sébastien, Bichon, Sabrina, Boinet, Christophe, Bourasseau, Line, Bréret, Martine, Caparros, Jocelyne, Cariou, Thierry, Charlier, Karine, Claquin, Pascal, Cornille, Vincent, Corre, Anne-Marie, Costes, Laurence, Crispi, Olivier, Crouvoisier, Muriel, Czamanski, Marie, Del Amo, Yolanda, Derriennic, Hervé, Dindinaud, François, Durozier, Maïa, Hanquiez, Vincent, Nowaczyk, Antoine, Devesa, Jérémy, Ferreira, Sophie, Fornier, Michel, Garcia, Fabrice, Garcia, Nicole, Geslin, Sandrine, Grossteffan, Emilie, Gueux, Aurore, Guillaudeau, Julien, Guillou, Gaël, Joly, Orianne, Lachaussée, Nicolas, Lafont, Michel, Lamoureux, Jézabel, Lecuyer, Eric, Lehodey, Jean-Paul, Lemeille, David, Leroux, Cédric, Macé, Eric, Maria, Eric, Pineau, Philippe, Petit, Franck, Pujo-Pay, Mireille, Rimelin-Maury, Peggy, and Sultan, Emmanuelle

Published
2017
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3. Data quality control considerations in multivariate environmental monitoring: experience of the French coastal network SOMLIT

Author

Breton, Elsa, primary, Savoye, Nicolas, additional, Rimmelin-Maury, Peggy, additional, Sautour, Benoit, additional, Goberville, Eric, additional, Lheureux, Arnaud, additional, Cariou, Thierry, additional, Ferreira, Sophie, additional, Agogué, Hélène, additional, Alliouane, Samir, additional, Aubert, Fabien, additional, Aubin, Sébastien, additional, Berthebaud, Eric, additional, Blayac, Hadrien, additional, Blondel, Lucie, additional, Boulart, Cédric, additional, Bozec, Yann, additional, Bureau, Sarah, additional, Caillo, Arnaud, additional, Cauvin, Arnaud, additional, Cazes, Jean-Baptiste, additional, Chasselin, Léo, additional, Claquin, Pascal, additional, Conan, Pascal, additional, Cordier, Marie-Ange, additional, Costes, Laurence, additional, Crec’hriou, Romain, additional, Crispi, Olivier, additional, Crouvoisier, Muriel, additional, David, Valérie, additional, Del Amo, Yolanda, additional, De Lary, Hortense, additional, Delebecq, Gaspard, additional, Devesa, Jeremy, additional, Domeau, Aurélien, additional, Durozier, Maria, additional, Emery, Claire, additional, Feunteun, Eric, additional, Fauchot, Juliette, additional, Gentilhomme, Valérie, additional, Geslin, Sandrine, additional, Giraud, Mélanie, additional, Grangeré, Karine, additional, Grégori, Gerald, additional, Grossteffan, Emilie, additional, Gueux, Aurore, additional, Guillaudeau, Julien, additional, Guillou, Gael, additional, Harrewyn, Manon, additional, Jolly, Orianne, additional, Jude-Lemeilleur, Florence, additional, Labatut, Paul, additional, Labourdette, Nathalie, additional, Lachaussée, Nicolas, additional, Lafont, Michel, additional, Lagadec, Veronique, additional, Lambert, Christophe, additional, Lamoureux, Jezebel, additional, Lanceleur, Laurent, additional, Lebreton, Benoit, additional, Lecuyer, Eric, additional, Lemeille, David, additional, Leredde, Yann, additional, Leroux, Cédric, additional, Leynaert, Aude, additional, L’Helguen, Stéphane, additional, Liénart, Camilla, additional, Macé, Eric, additional, Maria, Eric, additional, Marie, Barbara, additional, Marie, Dominique, additional, Mas, Sébastien, additional, Mendes, Fabrice, additional, Mornet, Line, additional, Mostajir, Behzad, additional, Mousseau, Laure, additional, Nowaczyk, Antoine, additional, Nunige, Sandra, additional, Parra, René, additional, Paulin, Thomas, additional, Pecqueur, David, additional, Petit, Franck, additional, Pineau, Philippe, additional, Raimbault, Patrick, additional, Rigaut-Jalabert, Fabienne, additional, Salmeron, Christophe, additional, Salter, Ian, additional, Sauriau, Pierre-Guy, additional, Seuront, Laurent, additional, Sultan, Emmanuelle, additional, Valdès, Rémi, additional, Vantrepotte, Vincent, additional, Vidussi, Francesca, additional, Voron, Florian, additional, Vuillemin, Renaud, additional, Zudaire, Laurent., additional, and Garcia, Nicole, additional

Published
2023
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4. Data quality control considerations in multivariate environmental monitoring: experience of the French coastal network SOMLIT

Author

Breton, Elsa, Savoye, Nicolas, Rimmelin-maury, Peggy, Sautour, Benoit, Goberville, Eric, Lheureux, Arnaud, Cariou, Thierry, Ferreira, Sophie, Agogué, Hélène, Alliouane, Samir, Aubert, Fabien, Aubin, Sébastien, Berthebaud, Eric, Blayac, Hadrien, Blondel, Lucie, Boulart, Cedric, Bozec, Yann, Bureau, Sarah, Caillo, Arnaud, Cauvin, Arnaud, Cazes, Jean-baptiste, Chasselin, Leo, Claquin, Pascal, Conan, Pascal, Cordier, Marie-ange, Costes, Laurence, Crec’hriou, Romain, Crispi, Olivier, Crouvoisier, Muriel, David, Valérie, Del Amo, Yolanda, De Lary, Hortense, Delebecq, Gaspard, Devesa, Jeremy, Domeau, Aurélien, Durozier, Maria, Emery, Claire, Feunteun, Eric, Fauchot, Juliette, Gentilhomme, Valérie, Geslin, Sandrine, Giraud, Mélanie, Grangeré, Karine, Grégori, Gerald, Grossteffan, Emilie, Gueux, Aurore, Guillaudeau, Julien, Guillou, Gael, Harrewyn, Manon, Jolly, Orianne, Jude-lemeilleur, Florence, Labatut, Paul, Labourdette, Nathalie, Lachaussée, Nicolas, Lafont, Michel, Lagadec, Veronique, Lambert, Christophe, Lamoureux, Jezebel, Lanceleur, Laurent, Lebreton, Benoit, Lecuyer, Eric, Lemeille, David, Leredde, Yann, Leroux, Cédric, Leynaert, Aude, L’helguen, Stéphane, Liénart, Camilla, Macé, Eric, Maria, Eric, Marie, Barbara, Marie, Dominique, Mas, Sébastien, Mendes, Fabrice, Mornet, Line, Mostajir, Behzad, Mousseau, Laure, Nowaczyk, Antoine, Nunige, Sandra, Parra, René, Paulin, Thomas, Pecqueur, David, Petit, Franck, Pineau, Philippe, Raimbault, Patrick, Rigaut-jalabert, Fabienne, Salmeron, Christophe, Salter, Ian, Sauriau, Pierre-guy, Seuront, Laurent, Sultan, Emmanuelle, Valdès, Rémi, Vantrepotte, Vincent, Vidussi, Francesca, Voron, Florian, Vuillemin, Renaud, Zudaire, Laurent., Garcia, Nicole, Breton, Elsa, Savoye, Nicolas, Rimmelin-maury, Peggy, Sautour, Benoit, Goberville, Eric, Lheureux, Arnaud, Cariou, Thierry, Ferreira, Sophie, Agogué, Hélène, Alliouane, Samir, Aubert, Fabien, Aubin, Sébastien, Berthebaud, Eric, Blayac, Hadrien, Blondel, Lucie, Boulart, Cedric, Bozec, Yann, Bureau, Sarah, Caillo, Arnaud, Cauvin, Arnaud, Cazes, Jean-baptiste, Chasselin, Leo, Claquin, Pascal, Conan, Pascal, Cordier, Marie-ange, Costes, Laurence, Crec’hriou, Romain, Crispi, Olivier, Crouvoisier, Muriel, David, Valérie, Del Amo, Yolanda, De Lary, Hortense, Delebecq, Gaspard, Devesa, Jeremy, Domeau, Aurélien, Durozier, Maria, Emery, Claire, Feunteun, Eric, Fauchot, Juliette, Gentilhomme, Valérie, Geslin, Sandrine, Giraud, Mélanie, Grangeré, Karine, Grégori, Gerald, Grossteffan, Emilie, Gueux, Aurore, Guillaudeau, Julien, Guillou, Gael, Harrewyn, Manon, Jolly, Orianne, Jude-lemeilleur, Florence, Labatut, Paul, Labourdette, Nathalie, Lachaussée, Nicolas, Lafont, Michel, Lagadec, Veronique, Lambert, Christophe, Lamoureux, Jezebel, Lanceleur, Laurent, Lebreton, Benoit, Lecuyer, Eric, Lemeille, David, Leredde, Yann, Leroux, Cédric, Leynaert, Aude, L’helguen, Stéphane, Liénart, Camilla, Macé, Eric, Maria, Eric, Marie, Barbara, Marie, Dominique, Mas, Sébastien, Mendes, Fabrice, Mornet, Line, Mostajir, Behzad, Mousseau, Laure, Nowaczyk, Antoine, Nunige, Sandra, Parra, René, Paulin, Thomas, Pecqueur, David, Petit, Franck, Pineau, Philippe, Raimbault, Patrick, Rigaut-jalabert, Fabienne, Salmeron, Christophe, Salter, Ian, Sauriau, Pierre-guy, Seuront, Laurent, Sultan, Emmanuelle, Valdès, Rémi, Vantrepotte, Vincent, Vidussi, Francesca, Voron, Florian, Vuillemin, Renaud, Zudaire, Laurent., and Garcia, Nicole

Abstract

IntroductionWhile crucial to ensuring the production of accurate and high-quality data—and to avoid erroneous conclusions—data quality control (QC) in environmental monitoring datasets is still poorly documented. MethodsWith a focus on annual inter-laboratory comparison (ILC) exercises performed in the context of the French coastal monitoring SOMLIT network, we share here a pragmatic approach to QC, which allows the calculation of systematic and random errors, measurement uncertainty, and individual performance. After an overview of the different QC actions applied to fulfill requirements for quality and competence, we report equipment, accommodation, design of the ILC exercises, and statistical methodology specially adapted to small environmental networks (<20 laboratories) and multivariate datasets. Finally, the expanded uncertainty of measurement for 20 environmental variables routinely measured by SOMLIT from discrete sampling—including Essential Ocean Variables—is provided. Results, Discussion, ConclusionThe examination of the temporal variations (2001–2021) in the repeatability, reproducibility, and trueness of the SOMLIT network over time confirms the essential role of ILC exercises as a tool for the continuous improvement of data quality in environmental monitoring datasets.

Published
2023
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8. Ten years of temperature and wind observation on a 45-m tower at Dome C, East Antarctic plateau.

Author

Genthon, Christophe, Veron, Dana E., Vignon, Etienne, Six, Delphine, Dufresne, Jean-Louis, Madeleine, Jean-Baptiste, Sultan, Emmanuelle, and Forget, François

Subjects
PANGAEA (Supercontinent), ATMOSPHERIC boundary layer, TEMPERATURE lapse rate, KATABATIC winds, SOLAR cycle, SEASONS
Abstract

Long-term, continuous in situ observations of the near-surface atmospheric boundary layer are critical for many weather and climate applications. Although there is a proliferation of surface stations globally, especially in and around populous areas, there are notably fewer tall meteorological towers with multiple instrumented levels. This is particularly true in remote and extreme environments such as the Eastern Antarctic plateau. In the article, we present and analyze 10 years of data from 6 levels of meteorological instrumentation mounted on a 42-m tower located at Dome C, East Antarctica near the Concordia research station, producing a unique climatology of the near-surface atmospheric environment (Genthon et al., 2021,a,b). Monthly temperature and wind data demonstrate the large seasonal differences in the near-surface boundary layer dynamics, depending on the presence or absence of solar surface forcing. Strong vertical temperature gradients (inversions) frequently develop in calm, winter conditions, while vertical convective mixing occurs in the summer leading to near-uniform temperatures along the tower. Seasonal variation in wind speed is much less notable at this location than the temperature variation as the winds are less influenced by the solar cycle; there are no katabatic winds as Dome C is quite flat. Harmonic analysis confirms that most of the energy in the power spectrum is at diurnal, annual and semi-annual time scales. Analysis of observational uncertainty and comparison to reanalysis data from ERA-5 indicate that wind speed is particularly difficult to measure at this location. Data are distributed on PANGAEA data repository, see data availability section. [ABSTRACT FROM AUTHOR]

Published
2021
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9. Dynamics of particulate organic matter composition in coastal systems: forcing to the spatio-temporal variability at multi-systems scale

Author

Lienart , Camilla, Savoye , Nicolas, David , Valérie, Ramond , Pierre, Tress , Paco Rodriguez, Hanquiez , Vincent, Marieu , Vincent, Aubert , Fabien, Aubin , Sébastien, Bichon , Sabrina, Boinet , Christophe, Bourasseau , Line, Bozec , Yann, Bréret , Martine, Breton , Elsa, Caparros , Jocelyne, Cariou , Thierry, Claquin , Pascal, Conan , Pascal, Corre , Anne-Marie, Costes , Laurence, Crouvoisier , Muriel, Amo , Yolanda Del, Derriennic , Hervé, Dindinaud , François, Duran , Robert, Durozier , Maïa, Devesa , Jérémy, Ferreira , Sophie, Feunteun , Eric, Garcia , Nicole, Geslin , Sandrine, Grossteffan , Emilie, Gueux , Aurore, Guillaudeau , Julien, Guillou , Gaël, Jolly , Orianne, Lachaussée , Nicolas, Lafont , Michel, Lagadec , Véronique, Lamoureux , Jézabel, Lauga , Béatrice, Lebreton , Benoit, Lecuyer , Eric, Lehodey , Jean-Paul, Leroux , Cédric, L’Helguen , Stéphane, Macé , Eric, Maria , Eric, Mousseau , Laure, Nowaczyk , Antoine, Pineau , Philippe, Petit , Frank, Pujo-Pay , Mireille, Raimbault , Patrick, Rimmelin-Maury , Peggy, Rouaud , Vanessa, Sauriau , Pierre-Guy, Sultan , Emmanuelle, Susperregui , Nicolas, Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux ( IPREM ), and Université de Pau et des Pays de l'Adour ( UPPA ) -Centre National de la Recherche Scientifique ( CNRS )

Subjects
[ SDE.MCG ] Environmental Sciences/Global Changes, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

10. Circulation on the Antarctic shelf off Adélie

Author

Martin, Antoine, Houssais, Marie-Noëlle, Sultan, Emmanuelle, Le Goff, Hervé, Variabilité de l'Océan et de la Glace de mer (VOG), Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN), Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Développement Instrumental et Techniques Marines (DITM), Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636))

Subjects
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2014

11. Dense shelf water production in the Adélie Depression, East Antarctica, 2004-2012: Impact of the Mertz Glacier calving

Author

Lacarra, Maite, Houssais, Marie-noelle, Herbaut, Christophe, Sultan, Emmanuelle, Beauverger, Mickael, Lacarra, Maite, Houssais, Marie-noelle, Herbaut, Christophe, Sultan, Emmanuelle, and Beauverger, Mickael

Abstract

Summer repeated hydrographic surveys and 4 years of mooring observations are used to characterize for the first time the interannual variability of the bottom water in the Mertz Glacier Polynya (MGP) on the East Antarctic shelf (142°E–146°E). Until 2010, large interannual variability was observed in the summer bottom salinity with year-to-year changes reaching 0.12 in Commonwealth Bay, the region with the highest sea ice production. The summer variability was shown to be linked to the efficiency of the convection during the preceding winter. The recent freshening of the bottom waters subsequent to the Mertz Glacier calving was well beyond the range of the precalving interannual variability. Within 2 years after the event, the bottom water of the shelf became too light to possibly contribute to renewal of the Antarctic Bottom Water. Rough estimates of the freshwater budget of the Adélie Depression indicate that the freshening necessary to compensate for net sea ice production in the MGP did not change drastically after the Mertz calving. The year-to-year salinity changes appeared to respond to the MGP activity. Yet, prior to the calving, the convective system in the polynya was also partly controlled by the late winter bottom salinity through a mechanism leading to a sequence of alternatively fresher and more saline bottom waters over the period 2007–2010. Exceptional events like the Mertz calving seem to be able to switch over the system into a less stratified state where convection responds more directly to changes in the surface forcing.

Published
2014
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12. L'année polaire international au Muséum national d'Histoire naturelle

Author

Arabi, Juliette, Deharveng, Louis, Hassanin, Alexandre, Bonillo, Céline, Coutanceau, Jean-Pierre, Dettai, Agnes, Lecointre, Guillaume, Le Gall, Line, Manuel, Michaël, Ozouf-Costaz, Catherine, de Reviers, Bruno, Rey, Olivier, Rousseau, Florence, Silberfeld, Thomas, Ameziane, N., Busson, Frédéric, Causse, Romain, Cléva, Régis, Denis, Françoise, Eléaume, Marc, Duhamel, Guy, Hautecoeur, Mélyne, Iglesias, Samuel P., Pruvost, P., Andrews-Goff, Virginia, Charrassin, Jean-Benoit, Durand, Isabelle, Park, Young-Hyang, Roquet, Fabien, Steinbach, Elisabeth, Sultan, Emmanuelle, Mouge, Sophie, Philippo, Sophie, Pons, Sophie, Institut de Systématique, Evolution, Biodiversité (ISYEB ), Muséum national d'Histoire naturelle (MNHN)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN), Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDV]Life Sciences [q-bio], [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, [SDV.BBM.BM]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, [SDV.BID]Life Sciences [q-bio]/Biodiversity, [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy
Abstract

International audience

Published
2007
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13. Equatorial pressure gradient in the Atlantic in 2002: TOPEX Poseidon and Jason versus the first PIRATA current measurements

Author

Provost, Christine, Arnault, Sabine, Chouaib, Nadine, Kartavtseff, Annie, Bunge, Lucia, Sultan, Emmanuelle, Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN), Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'océanographie dynamique et de climatologie (LODYC), Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS-PSL), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL)

Subjects
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography
Published
2004

15. An inverse model of the large scale circulation in the South Indian Ocean

Author

Sultan, Emmanuelle, Mercier, Herle, Pollard, R.t, Sultan, Emmanuelle, Mercier, Herle, and Pollard, R.t

Abstract

An overview of the large-scale circulation of the South Indian Ocean (SIO) (10 degrees S-70 degrees S/20 degrees E-120 degrees E) is proposed based on historical hydrographic data (1903-1996) synthesized with a finite-difference inverse model. The in situ density, potential temperature and salinity fields of selected hydrographic stations are projected on the basis of EOFs. Then the EOF coefficients (the projected values) are interpolated on the model grid (1 degrees in latitude, 2 degrees in longitude) using an objective analysis whose spatial correlation functions are fitted to the data set. The resulting fields are the input of the inverse model. This procedure filters out the small-scale features. Twelve modes are needed to keep the vertical structures of the fields but the first three modes are sufficient to reproduce the large-scale horizontal features of the SIO: the Subtropical Gyre, the Weddell Gyre, the different branches of the Antarctic Circumpolar Current. The dynamics is steady state. The estimated circulation is in geostrophic balance and satisfies mass, heat and potential vorticity conservation. The wind and air-sea heat forcing are annual means from ERS1 and ECMWF, respectively. The main features of the various current systems of the SIO are quantified and reveal topographic control of the deep and bottom circulation. The cyclonic Weddell Gyre, mainly barotropic, transports 45 Sv (1 Sv=10(6)m(3)/s), and has an eastern extension limited by the southern part of the Antarctic Circumpolar Current. The bottom circulation north of 50 degrees S is complex. The Deep Western Boundary Currents are identified as well as cyclonic recirculations. South east of the Kerguelen Plateau, the bottom circulation is in good agreement with previous water mass analysis. The comparison between some recent regional analysis and the inverse estimation is limited by the model resolution and lack of deep data. The meridional overturning circulation (MOC) is estimated from the

Published
2007
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17. Distribution of euphausiid larvae along the coast of East Antarctica in the Dumont d'Urville Sea (139-145°E) during summer 2004.

Author

Vallet, Carole, Koubbi, Philippe, Sultan, Emmanuelle, Goffart, Anne, Swadling, Kerrie M., and Wright, Simon W.

Subjects
EUPHAUSIACEA, ZOOLOGY, DISTRIBUTION (Probability theory), LARVAE
Abstract

The distribution of euphausiid larvae along the coast of Terre Ade'lie, Antarctica, was assessed using oblique tows of a double-framed bongo net at 38 stations during summer 2004. Larvae of Euphausia crystallorophias and Thysanoessa macrura were observed. For E. crystallorophias larvae, the calyptopis I stage was dominant along the coast, while the most commonly observed stage of T. macrura was the furcilia. The distribution of E. crystallorophias larvae were correlated with abiotic factors, including depth and sea surface salinity, whereas those of T. macrura larvae were correlated with biotic factors, especially chlorophyll a and nitrate. Developmental stages of both species increased in age from west to east in the survey area, with younger developmental stages (metanauplius and calyptopis I) in the western part of the region and older stages (calyptopis II and III and furcilia I to VI) in the eastern part near the Mertz Glacier Tongue (MGT). It is suggested that these patterns could be linked with the water circulation and wind: near the MGT gyres could concentrate all developmental stages of both species near the coast, while katabatic winds near Dumont d'Urville will promote larval advection seawards, with younger stages near the coast and older stages further offshore. [ABSTRACT FROM AUTHOR]

Published
2009
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