999 resultados para Mabillon, Jean (O.S.B.), 1632-1707


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v. 1 Essai sur la tactique des Grecs; Thucydide; Guerre du Pélopennèse; Xenophon; Retraite des dix-mille; Xenophon; La Cyropédie; Arrien, Expeditions d'Alexandre.--v. 2 Essai sur les milices romaines; Polybe; Historie générale.--v. 3 C.J. César; Commentaires; Végèce; Institutions militaires; Onosander; Le généra en chef; L'empereur Léon; Institutions militaires; Note sur la marine des anciens; S. Jul. Frontin; Stratagèmes, ruses de guerre, embuscades, surprises, Extraits de Feuquières, Folard, Santa-Cruz; Joly de Maizeroy; Cessac, Carrion-Nisas, Jomini, etc.

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Mode of access: Internet.

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The Last Interglacial (LIG, 129-116 thousand of years BP, ka) represents a test bed for climate model feedbacks in warmer-than-present high latitude regions. However, mainly because aligning different palaeoclimatic archives and from different parts of the world is not trivial, a spatio-temporal picture of LIG temperature changes is difficult to obtain. Here, we have selected 47 polar ice core and sub-polar marine sediment records and developed a strategy to align them onto the recent AICC2012 ice core chronology. We provide the first compilation of high-latitude temperature changes across the LIG associated with a coherent temporal framework built between ice core and marine sediment records. Our new data synthesis highlights non-synchronous maximum temperature changes between the two hemispheres with the Southern Ocean and Antarctica records showing an early warming compared to North Atlantic records. We also observe warmer than present-day conditions that occur for a longer time period in southern high latitudes than in northern high latitudes. Finally, the amplitude of temperature changes at high northern latitudes is larger compared to high southern latitude temperature changes recorded at the onset and the demise of the LIG. We have also compiled four data-based time slices with temperature anomalies (compared to present-day conditions) at 115 ka, 120 ka, 125 ka and 130 ka and quantitatively estimated temperature uncertainties that include relative dating errors. This provides an improved benchmark for performing more robust model-data comparison. The surface temperature simulated by two General Circulation Models (CCSM3 and HadCM3) for 130 ka and 125 ka is compared to the corresponding time slice data synthesis. This comparison shows that the models predict warmer than present conditions earlier than documented in the North Atlantic, while neither model is able to produce the reconstructed early Southern Ocean and Antarctic warming. Our results highlight the importance of producing a sequence of time slices rather than one single time slice averaging the LIG climate conditions.

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We compare a compilation of 220 sediment core d13C data from the glacial Atlantic Ocean with three-dimensional ocean circulation simulations including a marine carbon cycle model. The carbon cycle model employs circulation fields which were derived from previous climate simulations. All sediment data have been thoroughly quality controlled, focusing on epibenthic foraminiferal species (such as Cibicidoides wuellerstorfi or Planulina ariminensis) to improve the comparability of model and sediment core carbon isotopes. The model captures the general d13C pattern indicated by present-day water column data and Late Holocene sediment cores but underestimates intermediate and deep water values in the South Atlantic. The best agreement with glacial reconstructions is obtained for a model scenario with an altered freshwater balance in the Southern Ocean that mimics enhanced northward sea ice export and melting away from the zone of sea ice production. This results in a shoaled and weakened North Atlantic Deep Water flow and intensified Antarctic Bottom Water export, hence confirming previous reconstructions from paleoproxy records. Moreover, the modeled abyssal ocean is very cold and very saline, which is in line with other proxy data evidence.

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Canopy and aerodynamic conductances (gC and gA) are two of the key land surface biophysical variables that control the land surface response of land surface schemes in climate models. Their representation is crucial for predicting transpiration (λET) and evaporation (λEE) flux components of the terrestrial latent heat flux (λE), which has important implications for global climate change and water resource management. By physical integration of radiometric surface temperature (TR) into an integrated framework of the Penman?Monteith and Shuttleworth?Wallace models, we present a novel approach to directly quantify the canopy-scale biophysical controls on λET and λEE over multiple plant functional types (PFTs) in the Amazon Basin. Combining data from six LBA (Large-scale Biosphere-Atmosphere Experiment in Amazonia) eddy covariance tower sites and a TR-driven physically based modeling approach, we identified the canopy-scale feedback-response mechanism between gC, λET, and atmospheric vapor pressure deficit (DA), without using any leaf-scale empirical parameterizations for the modeling. The TR-based model shows minor biophysical control on λET during the wet (rainy) seasons where λET becomes predominantly radiation driven and net radiation (RN) determines 75 to 80 % of the variances of λET. However, biophysical control on λET is dramatically increased during the dry seasons, and particularly the 2005 drought year, explaining 50 to 65 % of the variances of λET, and indicates λET to be substantially soil moisture driven during the rainfall deficit phase. Despite substantial differences in gA between forests and pastures, very similar canopy?atmosphere "coupling" was found in these two biomes due to soil moisture-induced decrease in gC in the pasture. This revealed the pragmatic aspect of the TR-driven model behavior that exhibits a high sensitivity of gC to per unit change in wetness as opposed to gA that is marginally sensitive to surface wetness variability. Our results reveal the occurrence of a significant hysteresis between λET and gC during the dry season for the pasture sites, which is attributed to relatively low soil water availability as compared to the rainforests, likely due to differences in rooting depth between the two systems. Evaporation was significantly influenced by gA for all the PFTs and across all wetness conditions. Our analytical framework logically captures the responses of gC and gA to changes in atmospheric radiation, DA, and surface radiometric temperature, and thus appears to be promising for the improvement of existing land?surface?atmosphere exchange parameterizations across a range of spatial scales.

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Contient : « Abrégé des Remarques sur la préface du 4e siècle du R. P. Mabillon, par D. Philippe Bastide » ; « In sæculum v Benedictinum animadversiones » ; « De antiqua Ordinis sancti Benedicti intra Gallias propagatione dissertatio » ; « Mémoires pour justifier le procédé que j'ay tenu dans l'édition des Vies de nos saints, » etc ; « Brièves reflections sur quelques règles de l'histoire » ; Notes et extraits divers ; « Mémoires touchant l'approbation de nostre Règle, qui commence : « Ego Gregorius, etc. » ; « Lettre d'un solitaire touchant l'obligation des règles » ; Inscriptions du prieuré de Saint-Fromund près Coutances ; Dissertation sur une borne milliaire découverte à Vic-sur-Aisne ; Note du libraire Robustel au sujet de différents ouvrages de Mabillon ; Copies de lettres du cardinal de Bouillon à Baluze, au sujet de l'Histoire de la maison d'Auvergne (1707) ; Prospectus de : « Sequani christiani, sive de re Sequanorum christiana decas historica,... studio P. Andreæ a S. Nicolao..., » in-4°, impr

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Contient : « Indiculus sanctorum monachorum, cum primis et extremis verbis Actorum quæ penes nos habentur, » par Mabillon