Philippe JEAN-PIERRE

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2006
• Auteurs : A. MathieuJean-Marcel PiriouM. HaeffelinPhilippe DrobinskiF. VinitFrançois Bouyssel
• Organismes : Service d'aéronomie Institut de Radioprotection et de Sûreté Nucléaire Centre national de recherches météorologiques Laboratoire de Météorologie Dynamique (UMR 8539) Service d'aéronomie Centre national de recherches météorologiques Centre national de recherches météorologiques
• Publié dans Geophysical Research Letters le 25/10/2020

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Résumé : In this study, errors in cloud base height predicted by two numerical weather prediction models is evaluated using observations from the French instrumented site SIRTA. Results show that a significant portion of the error is due to errors in predicted surface relative humidity. These errors are in turn thought to be caused by the convection schemes.

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Fichiers liés : 2006GL026001.pdf

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2006
• Auteurs : Brigitte GranelYannick AllanoreChristophe ChevillardViolaine ArnaudSandrine MarquetPierre-Jean WeillerJean-Marc DurandJean-Robert HarléClaire GrangeYves FrancesPhilippe BerbisJean GaudartPhilippe De MiccoAndré KahanAlain Dessein
• Organismes : Hôpital Nord [CHU - APHM] Service de rhumatologie [CHU Cochin] Génétique et immunologie des maladies parasitaires UNIROUEN - UFR Santé Service de Médecine Interne Hôpital Edouard Herriot, Pavillon T Service de Chirurgie Centre de Recherche Roland Mousnier Histoire et Civilisation Service de Médecine interne [CHU Saint-Etienne] Laboratoire d'informatique Fondamentale de Marseille - UMR 6166 Service de rhumatologie [CHU Cochin] Génétique et immunologie des maladies parasitaires
• Publié dans Journal of Rheumatology le 25/10/2020

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Résumé : no abstract

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2006
• Auteurs : Jean-Jacques CorneePhilippe MunchFrédéric QuillévéréPierre MoissetteIuliana VasilievWout KrijgsmanChrystèle VeratiChristophe Lécuyer
• Organismes : PaleoEnvironnements et PaleobioSphere Géologie des Systèmes Carbonatés PaleoEnvironnements et PaleobioSphere PaleoEnvironnements et PaleobioSphere Géoazur PaleoEnvironnements et PaleobioSphere
• Publié dans Earth and Planetary Science Letters le 01/11/2020

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Résumé : We discovered a volcaniclastic layer in the Plio-Pleistocene coastal sequences on the island of Rhodes (Aegean fore-arc, Greece). Here, we present an integrated isotopic, magnetostratigraphic, and biostratigraphic (planktonic foraminifers) study for the Haraki section, where this layer is found intercalated in several meters of sedimentary rocks corresponding to the Lindos Bay clay Member of the Rhodes Formation. 40Ar/39Ar dating of the volcaniclastic layer provides an age of 1.89±0.09 Ma, which is consistent with our planktonic foraminiferal data. Magnetostratigraphic results show that the entire Haraki section is of normal polarity and according to the isotopic results this corresponds to the Olduvai subchron (1.95–1.77 Ma). The new age determination provides severe constraints for deciphering the sedimentary and tectonic evolution of Rhodes since the Late Pliocene, which can be summarized in the following: (1) 500 to 600 m drowning during the latest Pliocene that could be related to the westward motion of the Anatolian Plate; (2) at least 520 m of uplift at around 1.4–1.3 Ma related to activity of the sinistral strike-slip of the Pliny Trench, the deep Rhodes basin being separated from the island of Rhodes; (3) a counterclockwise rotation of Rhodes, younger than 1.2–1.1 Ma, and possibly synchronous with the young clockwise rotation of the western Aegean arc.

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2006
• Auteurs : Sophie BastinPhilippe DrobinskiVincent GuénardJean-Luc CacciaBernard CampistronAlain DabasPatricia DelvilleOlivier ReitebuchChristian Werner
• Organismes : Service d'aéronomie Service d'aéronomie Laboratoire de sondages électromagnétiques de l'environnement terrestre Laboratoire de sondages électromagnétiques de l'environnement terrestre Laboratoire d'aérologie Centre national de recherches météorologiques Division technique INSU/SDU Deutsches Zentrum für Luft- und Raumfahrt [Köln] Deutsches Zentrum für Luft- und Raumfahrt [Köln]
• Publié dans Monthly Weather Review le 28/10/2020

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Résumé : The three-dimensional structure and dynamics of the combination of the sea breeze and the mistral at the Rhône Valley exit, in southeastern France, have been investigated experimentally and numerically on 22 June 2001. The mistral refers to a severe northerly wind that develops along the Rhône Valley. The exit of this valley is located near the Mediterranean Sea where sea-breeze circulation often develops. The sea breeze and the mistral coexist this day because of the weakness of this mistral event. The event was documented in the framework of the Expérience sur Site pour Contraindre les Modèles de Pollution Atmosphérique et de Transport d'Emissions (ESCOMPTE) field experiment. Several important data sources are used (airborne Doppler lidar, UHF wind profilers, radiosoundings, and surface stations) as well as nonhydrostatic mesoscale simulations. This paper examines the various mechanisms that drive the time and spatial variability of the mistral and the sea breeze in various regions of the Rhône Valley. In the morning, the sea breeze penetrates inland near the western side of the Rhône Valley then moves back because of the reinforcement of the mistral flow caused by the deepening of the leeward surface low due to convection at noon. At midday, the sea breeze penetrates inland in the middle of the Rhône Valley only. In contrast to pure sea-breeze episodes when the sea breeze can extend inland over a horizontal range of more than 150 km, the presence of the mistral prevents the sea breeze from penetrating more than 40 km onshore. In the late afternoon, the sea breeze reaches the eastern side of the Rhône Valley but over a smaller horizontal range because of higher local topography and because the mistral is more intense in this part of the Rhône Valley. The situations of sea-breeze–mistral interactions can have a severe impact on regional air quality. Indeed, the southerly sea breeze, which advects toward the countryside the pollutants emitted from the large coastal city of Marseille, France, and its industrialized suburbs, cannot penetrate far inland because of the mistral blowing in the opposite direction. This leads to the stagnation of the pollutants near the area of emission that is also the most densely inhabited area of the region (over one million inhabitants).

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Fichiers liés : mwr3116_1.pdf

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2006
• Auteurs : Jean-Philippe LavalPierre BlaineauNicolas LeprovostBérengère DubrulleFrançois Daviaud
• Organismes : Laboratoire de Mécanique de Lille - FRE 3723 Service de physique de l'état condensé Service de physique de l'état condensé Service de physique de l'état condensé Service de physique de l'état condensé
• Publié dans Physical Review Letters le 02/11/2020

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Résumé : We use direct and stochastic numerical simulations of the magnetohydrodynamic equations to explore the influence of turbulence on the dynamo threshold. In the spirit of the Kraichnan-Kazantsev model, we model the turbulence by a noise, with given amplitude, injection scale and correlation time. The addition of a stochastic noise to the mean velocity significantly alters the dynamo threshold. When the noise is at small (resp. large) scale, the dynamo threshold is decreased (resp. increased). For a large scale noise, a finite correlation time reinforces this effect.

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Fichiers liés : prl-bruit-221205.pdf

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2006
• Auteurs : Philippe Moulis
• Organismes : Religions et croyances LAboratoire de Recherche Historique Rhône-Alpes - UMR5190
• Publié dans Bulletin historique du Haut-Pays le 10/12/2019

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• Type de publi. : Ouvrage (y compris édition critique et traduction)
• Date de publi. : 01/01/2006
• Auteurs : Nicole AnquetilGilles BoquératPierre GentellePhilippe PelletierGabriel Weissberg
• Organismes : Environnement, Ville, Société Laboratoire Interdisciplinaire Solidarités, Sociétés, Territoires

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2006
• Auteurs : Éric GirardPierre LegrandOlga RoudenkoLucile RoussierPatrick GourhantJonathan GibelinDidier DalleMajid OunsyAndrew William ThompsonOlof SvenssonMarie-Odile CordierSophie RobinRené QuiniouJean-Philippe Steyer
• Organismes : Synchrotron SOLEIL Synchrotron SOLEIL Synchrotron SOLEIL Synchrotron SOLEIL Synchrotron SOLEIL Synchrotron SOLEIL Synchrotron SOLEIL Synchrotron SOLEIL Synchrotron SOLEIL European Synchrotron Radiation Facility Institut de Recherche en Informatique et Systèmes Aléatoires Institut de Recherche en Informatique et Systèmes Aléatoires Institut de Recherche en Informatique et Systèmes Aléatoires Laboratoire de Biotechnologie de l'Environnement [Narbonne]
• Publié dans Acta crystallographica Section D : Structural biology [1993-...] le 28/10/2020

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Résumé : X-ray diffraction is an extremely important tool for structure determination of biological macromolecules, to the extent that currently around 85% of Protein Data Bank entries result from X-ray measurements. Many of these structure determinations use synchrotron radiation for data collection. This article aims to give synchrotron users an overview of the functioning of a synchrotron beamline and how the performance of various instruments combines to allow the collection of diffraction data.

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2006
• Auteurs : Philippe DrobinskiJean-Luc RedelspergerChristophe Pietras
• Organismes : Service d'aéronomie Centre national de recherches météorologiques Laboratoire d’Optique Atmosphérique - UMR 8518
• Publié dans Geophysical Research Letters le 25/10/2020

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Résumé : In numerical modelling, far from regions of large gradients, the resolved scales contain most of the energy of turbulent motion whilst on subgrid scales (SGS), motions are less energetic. However, SGS contribution becomes larger than the resolved part near the surface. Recent studies have shown that near-surface turbulence anisotropy has a dramatic effect on the mixing length to be used in SGS models which are generally derived for free-stream isotropic turbulence or use the standard Prandtl mixing length z. Using the flux measurements collected at the SIRTA observatory located near Paris (France), this paper shows that a SGS model suitable for both the surface layer and free-stream turbulence must discard the Prandtl mixing length and account for near-surface turbulence anisotropy. It also shows that such an SGS scheme, which is suited for all numerical models of the atmosphere, improves the representation of planetary boundary layer processes in most stability conditions.

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Fichiers liés : 2006GL027062.pdf

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• Type de publi. : Rapport
• Date de publi. : 01/01/2006
• Auteurs : Charles BergPierre DesmarezJohn R. EdwardsChristophe NosbonneXavier EngelsJean-Philippe FonsLeszek GilejkoLionel JacquotJean-Louis MeyerRafal TowalskiWillems Helmut
• Organismes : Université de Lorraine IAE Nancy School of Management

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