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Registros recuperados: 18
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A coastal operational oceanography system coupled to the GMES marine service ArchiMer
Lecornu, Fabrice; Dumas, Franck; Gohin, Francis; Le Traon, Pierre-yves; Menesguen, Alain; Pineau-guillou, Lucia.
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Ano: 2012 URL: http://archimer.ifremer.fr/doc/00243/35380/33883.pdf
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A suitable metocean hindcast database for the design of Marine energy converters ArchiMer
Boudiere, Edwige; Maisondieu, Christophe; Ardhuin, Fabrice; Accensi, Mickael; Pineau-guillou, Lucia; Lepesqueur, Jeremy.
Resource assessment as well as characterisation of site climatologies for the design of Marine Energy Converters requires data bases allowing an accurate description of the environmental forcing, especially waves and sea-states, on a high resolution grid. As a support to its research activities related to the development of marine renewable energies, Ifremer is building a specific hindcast data set for the assessment of sea-states climatologies. The main features of this database, built running an up-to-date configuration of the WaveWatch III® wave model on an unstructured grid extending from the South of the North Sea to the Bay of Biscay are presented here. Attention is given to the parameterization and forcing as well as the specific output data sets...
Tipo: Text Palavras-chave: Directional spectra; Hindcast; WAVEWATCH III®; Marine renewable energy.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00164/27524/25710.pdf
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Atmospheric storm surge modeling methodology along the French (Atlantic and English Channel) coast ArchiMer
Muller, Heloise; Pineau-guillou, Lucia; Idier, Deborah; Ardhuin, Fabrice.
Storm surge modeling and forecast are the key issues for coastal risk early warning systems. As a general objective, this study aims at improving high-frequency storm surge variations modeling within the PREVIMER system (www.previmer.org), along the French Atlantic and English Channel coasts. The paper focuses on (1) sea surface drag parameterization and (2) uncertainties induced by the meteorological data quality. The modeling is based on the shallow-water version of the model for applications at regional scale (MARS), with a 2-km spatial resolution. The model computes together tide and surge, allowing properly taking into account tide-surge interactions. To select the most appropriate parameterization for the study area, a sensitivity analysis on sea...
Tipo: Text Palavras-chave: Storm surge; MARS; Sea surface drag; Meteorological forcing.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00219/32982/31404.pdf
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Development and validation of a sediment dynamics model within a coastal operational oceanographic system ArchiMer
Cayocca, Florence; Verney, Romaric; Petton, Sebastien; Caillaud, Matthieu; Dussauze, Morgan; Dumas, Franck; Le Roux, Jean-francois; Pineau-guillou, Lucia; Le Hir, Pierre.
The rising interest in environmental and ecosystem dynamics have lead coastal oceanographers to not only investigate the “traditional” physical parameters describing the ocean state and its dynamics (e.g. temperature, salinity, currents, water levels in coastal areas), but to also account for the dynamics of parameters describing its biogeochemical components. To that end, MARS3D regional and coastal modelling system has been coupled to ecosystem modules (ECO-MARS3D, ECO3M) as well as sediment dynamics modules (MARS3D-SEDIM): sediment, nutrient and primary production contents can be considered as the lower level environment and ecosystem descriptors of the “biogeochemical” ocean. Early investments into physical and biological analysis at the regional scale...
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Ano: 2014 URL: http://archimer.ifremer.fr/doc/00194/30572/29015.pdf
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Étude sur la prolifération de la micro algue Alexandrium minutum en rade de Brest ArchiMer
Chapelle, Annie; Le Bec, Claude; Amzil, Zouher; Dreanno, Catherine; Guillou, Laure; Klouch, Khadidja; Labry, Claire; Le Gac, Mickael; Pineau-guillou, Lucia; Siano, Raffaele; Abernot, Chantal; Andrieux, Francoise; Caradec, Florian; Destombe, Christophe; Dia, A.; Doner, Anne; Duval, Julia; Gouriou, Jeremie; Lazure, Pascal; Le Brun, Luc; Le Gal, Dominique; Malestroit, Pascale; Petton, Sebastien; Plus, Martin; Quere, Julien; Savar, Veronique; Schmitt, Sophie; Terre, A.; Youenou, Agnes.
Suite à l’événement de grande ampleur d’efflorescence d’Alexandrium minutum et des toxicités associées en Rade de Brest en 2012, un projet a été élaboré avec la Région Bretagne dans le cadre du développement du port de Brest. L’Ifremer a organisé un échantillonnage dans l’estuaire de la rivière de Daoulas, zone la plus touchée en 2012, au cours des printemps-été 2013 et 2014. Un suivi de la présence d’A. minutum dans les sédiments a également été réalisé en hiver 2014. De ces suivis, des mesures réalisées au laboratoire à ce jour, des simulations du modèle Prévimer ainsi que des résultats du réseau Rephy et Velyger, il ressort que: * La rade de Brest peut aujourd’hui être considérée comme une zone à risque pour Alexandrium minutum. En effet, depuis 2012...
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Ano: 2014 URL: http://archimer.ifremer.fr/doc/00254/36487/35029.pdf
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Etude sur la prolifération de la micro algue Alexandrium minutum en rade de Brest. Projet Daoulex. Rapport d’avancement n° 1 : Novembre 2013 ArchiMer
Chapelle, Annie; Le Bec, Claude; Le Gac, Mickael; Labry, Claire; Amzil, Zouher; Guillou, Laure; Dreanno, Catherine; Pineau-guillou, Lucia.
Suite à l’événement de grande ampleur d’efflorescence d’Alexandrium minutum et des toxicités associées en Rade de Brest en 2012, un projet a été monté avec la Région dans le cadre du développement du port de Brest. De juillet à août 2013, l’Ifremer a organisé un échantillonnage serré dans l’estuaire de Daoulas, zone la plus touchée en 2012. De ce suivi et des mesures réalisées au laboratoire à ce jour, ainsi que des résultats du réseau Rephy et Velyger, il ressort que : * Alexandrium minutum s’est développé à nouveau en rade de Brest en 2013 mais à des teneurs inférieures à 2012. * l’épisode de bloom et de toxicité supérieur aux seuils légaux s’est déroulé plus tard qu’en 2012, du 1er juillet jusqu’à 5 août. * les efflorescences et la toxicité ont touché...
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Ano: 2013 URL: https://archimer.ifremer.fr/doc/00191/30230/28644.pdf
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General Introduction: PREVIMER, a French pre-operational coastal ocean forecasting capability. ArchiMer
Dumas, Franck; Pineau-guillou, Lucia; Lecornu, Fabrice; Le Roux, Jean-francois; Le Squere, Bruno.
Pre-operational system PREVIMER provides with coastal observations and forecasts along French coasts: currents, waves, sea levels, temperature, salinity, primary production and turbidity. These marine environmental data come from in situ observations, satellite images, and numerical models. They are centralized and archived in PREVIMER databases, then published on website (real time and historical data), and freely available to users, private companies as well as public administrations. This paper describes in details PREVIMER components and users.
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Ano: 2014 URL: http://archimer.ifremer.fr/doc/00189/30037/28523.pdf
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Génération de bases de données océano-météorologiques pour l'élaboration de climatologies adaptées au dimensionnement des structures en mer ArchiMer
Boudiere, Edwige; Maisondieu, Christophe; Ardhuin, Fabrice; Accensi, Mickael; Pineau-guillou, Lucia; Lepesqueur, Jeremy.
The number of Marine Renewable Energy projects has rapidly raised over the last decades. Those require a refined description of environmental conditions, such as sea states, for resource assessments as well as for the conception of the Marine Energy Converters. Engineering studies require long-term data sets so as to assess temporal variability and extreme events of sea states at the scale of the implantation sites.,As a support to its research studies on Marine Renewable Energy, Ifremer is building a specific hindcast database, running the wave model WAVEWATCH III® on an unstructured grid. The wave model extends over the area from the South of the North Sea to the Bay of Biscay with a high spatial resolution and covers a 16 years period from 1996 to 2012....
Tipo: Text Palavras-chave: Spectre directionnel; Hindcast; WAVEWATCH III®; Énergie marine renouvelable; Directional spectra; Hindcast; WAVEWATCH III®; Marine renewable energy.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00203/31418/29813.pdf
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Ocean-Atmosphere Interaction. Improvement of wind stress for coastal physical modelling ArchiMer
Pineau-guillou, Lucia; Ardhuin, Fabrice; Bouin, Marie-noelle; Redelsperger, Jean-luc.
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Ano: 2015 URL: http://archimer.ifremer.fr/doc/00279/39039/37586.pdf
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PREVIMER: A coastal operational oceanography system coupled to the Copernicus Marine Service ArchiMer
Lecornu, Fabrice; Pineau-guillou, Lucia; Dumas, Franck; Le Traon, Pierre-yves; Gohin, Francis; Menesguen, Alain.
Our coastal zones are subject to increasing anthropogenic pressure. Monitoring systems are required to protect them, prevent or mitigate risks and to ensure a sustainable management of their resources. PREVIMER is a partnership between Ifremer (French Research Institute for Exploitation of the Sea), SHOM (French Hydrographic Office) and several major French institutions (www.previmer.org). It provides coastal observations, analyses and 4 days forecasts for the French coasts of the English Channel, Atlantic Ocean and Mediterranean Sea: currents, water levels, waves, temperature, salinity, turbidity, nutrients and plankton concentrations. The service includes information based on in situ, satellite observations and numerical simulations. PREVIMER products...
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Ano: 2013 URL: http://archimer.ifremer.fr/doc/00189/30039/28525.pdf
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PREVIMER: Downscaling from MyOcean regional scale to coastal scale ArchiMer
Pineau-guillou, Lucia; Dumas, Franck; Petton, Sebastien; Garreau, Pierre; Herbert, Gaelle; Charria, Guillaume; Le Traon, Pierre-yves; Debreu, Laurent.
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Ano: 2014 URL: http://archimer.ifremer.fr/doc/00214/32496/30976.pdf
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PREVIMER: Improvement of surge, sea level and currents modelling ArchiMer
Pineau-guillou, Lucia; Dumas, Franck; Theetten, Sebastien; Ardhuin, Fabrice; Lecornu, Fabrice; Le Roux, Jean-francois; Idier, Deborah; Muller, Heloise; Pedreros, Rodrigo.
The pre-operational system PREVIMER provides coastal observations and forecasts along French coasts. It provides, among other variables, currents, sea levels, surges and waves. This paper describes the development and validation of a high temporal (15 minutes) and spatial (250 m) resolution modeling system, based on MARS hydrodynamic model (Lazure and Dumas 2008), along the Atlantic and English Channel coasts. Models benefi t from experiments developed during the PREVIMER project by: (1) taking better into account wind and wave actions (improving surface drag coeffi cient parameterization), (2) taking into account a better meteorological forcing (improving spatial and temporal meteorological resolution). These high resolution models have been integrated in...
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Ano: 2014 URL: http://archimer.ifremer.fr/doc/00189/30036/28522.pdf
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PREVIMER : Modélisation 2D des courants, niveaux de la mer et surcotes ArchiMer
Pineau-guillou, Lucia; Lecornu, Fabrice; Le Roux, Jean-francois; Theetten, Sebastien.
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Ano: 2013 URL: http://archimer.ifremer.fr/doc/00189/30038/28524.pdf
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PREVIMER. Validation des atlas de composantes harmoniques de hauteurs et courants de marée ArchiMer
Pineau-guillou, Lucia.
Ce rapport présente la mise en place et la validation des atlas de composantes harmoniques de marée et courants de marée, issus de l’analyse des rejeux de la chaîne opérationnelle MARS-2D de PREVIMER. Dans une première partie, la méthodologie est détaillée, les analyses ont été effectuées à partir de la Tidal ToolBox (version 2.2.3), développée par le LEGOS (Allain 2013), dans le cadre de PREVIMER. Dans une deuxième partie, la validation des atlas est présentée, avec en particulier la comparaison des prédictions issues des atlas et celles issues de SHOMAR, le logiciel de prédiction officielle du SHOM (Simon 2007).
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Ano: 2013 URL: http://archimer.ifremer.fr/doc/00157/26801/24912.pdf
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PREVIMER. Validation des modèles hydrodynamiques 2D des côtes de la Manche et de l’Atlantique ArchiMer
Pineau-guillou, Lucia.
Ce rapport présente la mise en place, l’amélioration de la paramétrisation et la validation des modèles 2D de niveaux de la mer, surcotes/décotes et courants développés en 2012. Ces modèles sont destinés à remplacer les anciens modèles 2D opérés en routine, des améliorations importantes ayant été intégrées (résolution spatiale, paramétrisation, forçages).
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Ano: 2013 URL: http://archimer.ifremer.fr/doc/00157/26800/24911.pdf
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Prévision opérationnelle des niveaux de la mer, surcotes et décotes sur les côtes de la Manche et de l’Atlantique ArchiMer
Pineau-guillou, Lucia; Theetten, Sebastien; Dumas, Franck; Lecornu, Fabrice; Idier, Deborah.
Le système pré-opérationnel PREVIMER fournit des observations et des prévisions côtières sur les trois façades métropolitaines Manche, Atlantique et Méditerranée. Il fournit en particulier les prévisions de courants, niveaux de la mer, surcotes et décotes et vagues. L’objectif de l’étude est de mettre en place un système de modélisation des ondes longues (2DH) haute résolution (une centaine de mètres) sur l’ensemble des côtes métropolitaines. Les expériences menées dans le cadre de PREVIMER ont mis en évidence l’importance d’une meilleure prise en compte de l’action du vent et des vagues - par l’amélioration de la paramétrisation du coefficient de traînée en surface - et du wave set-up. Ainsi, ces modèles à haute-résolution intègrent ces dernières...
Tipo: Text Palavras-chave: Hydrodynamique côtière; Modélisation numérique; Wave set; Coefficient de traînée; Surcotes; Niveau de la mer; Système opérationnel.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00157/26802/24913.pdf
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Sensitivity to wind stress formulation in a coupled wave-atmosphere model ArchiMer
Pineau-guillou, Lucia; Ardhuin, Fabrice; Bouin, Marie-noëlle; Redelsperger, Jean-luc; Chapron, Bertrand; Bidlot, Jean.
Tipo: Text
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00350/46095/45768.pdf
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Strong winds in a coupled wave-atmosphere model during a North Atlantic storm event: evaluation against observations ArchiMer
Pineau-guillou, Lucia; Ardhuin, Fabrice; Bouin, Marie-noelle; Redelsperger, Jean-luc; Chapron, Bertrand; Bidlot, Jean-raymond; Quilfen, Yves.
Strong winds may be biased in atmospheric models. Here the ECMWF coupled wave-atmosphere model is used (1) to evaluate strong winds against observations, (2) to test how alternative wind stress parameterizations could lead to a more accurate model. For the period of storms Kaat and Lilli (23 to 27 January 2014), we compared simulated winds with in-situ – moored buoys and platforms - and satellite observations available from the North Atlantic. Five wind stress parameterizations were evaluated. The first result is that moderate simulated winds (5-20 m s-1) match with all observations. However, for strong winds (above 20 m s-1), mean differences appear, as much as -7 m s-1 at 30 m s-1. Significant differences also exist between observations, with buoys and...
Tipo: Text Palavras-chave: Air-sea exchanges; Northeast Atlantic; Winds; IFS; Sea state; Roughness length; Drag coefficient; Wind stress.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00410/52118/52826.pdf
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