Search Results - "Guichard, F."

Leopard density and determinants of space use in a farming landscape in South Africa by J E T, McKaughan, P A, Stephens, C, Lucas, N, Guichard-Kruger, F, Guichard-Kruger, R A, Hill

“…Protected areas are traditionally the foundation of conservation strategy, but land not formally protected is of particular importance for the conservation of…”
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High-power two-cycle ultrafast source based on hybrid nonlinear compression by Lavenu, L, Natile, M, Guichard, F, Délen, X, Hanna, M, Zaouter, Y, Georges, P

“…We demonstrate a hybrid dual-stage nonlinear compression scheme, which allows the temporal compression of 330 fs-pulses down to 6.8 fs-pulses, with an overall…”
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Influence of dry‐season vegetation variability on Sahelian dust during 2002–2015 by Kergoat, L., Guichard, F., Pierre, C., Vassal, C.

“…The drivers of dust emission interannual variability in North Africa, the largest dust source on Earth, are still debated. Early studies outlined the role of…”
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High-energy few-cycle Yb-doped fiber amplifier source based on a single nonlinear compression stage by Lavenu, L, Natile, M, Guichard, F, Zaouter, Y, Hanna, M, Mottay, E, Georges, P

“…A simple, compact, and efficient few-cycle laser source at a central wavelength of 1 µm is presented. The system is based on a high-energy femtosecond…”
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Cascaded harmonic generation from a fiber laser: a milliwatt XUV source by Comby, A, Descamps, D, Beauvarlet, S, Gonzalez, A, Guichard, F, Petit, S, Zaouter, Y, Mairesse, Y

“…Recent progresses in femtosecond ytterbium-doped fiber laser technology are opening new perspectives in strong field physics and attosecond science. High-order…”
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Detection of Intraseasonal Large-Scale Heat Waves: Characteristics and Historical Trends during the Sahelian Spring by Barbier, J., Guichard, F., Bouniol, D., Couvreux, F., Roehrig, R.

“…In the Sahel very high temperatures prevail in spring, but little is known about heat waves in this region at that time of year. This study documents Sahelian…”
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Spurious effects of the deep convection parameterisation on the simulation of a Sahelian heatwave by Tomasini, M., Guichard, F., Couvreux, F., Roehrig, R., Barbier, J.

“…A severe heatwave occurred in April 2010 over West Africa. It was characterised by a particularly high daily minimum temperature reaching more than 35°C…”
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Intensity noise in difference frequency generation-based tunable femtosecond MIR sources by Bournet, Q, Natile, M, Jonusas, M, Guichard, F, Zaouter, Y, Joffre, M, Bonvalet, A, Druon, F, Hanna, M, Georges, P

“…We characterize the intensity noise of two mid-infrared (MIR) ultrafast tunable (3.5-11 μm) sources based on difference frequency generation (DFG). While both…”
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Fast computation of a contrast-invariant image representation by Monasse, P., Guichard, F.

“…This paper sets out a new representation of an image which is contrast independent. The image is decomposed into a tree of "shapes" based on connected…”
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Improving isopropanol tolerance and production of Clostridium beijerinckii DSM 6423 by random mutagenesis and genome shuffling by Gérando, H. Máté de, Fayolle-Guichard, F., Rudant, L., Millah, S. K., Monot, F., Ferreira, Nicolas Lopes, López-Contreras, A. M.

“…Random mutagenesis and genome shuffling was applied to improve solvent tolerance and isopropanol/butanol/ethanol (IBE) production in the strictly anaerobic…”
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Changes in Sahelian annual vegetation growth and phenology since 1960: A modeling approach by Pierre, C., Grippa, M., Mougin, E., Guichard, F., Kergoat, L.

“…In semi-arid areas like the Sahel, vegetation is particularly sensitive to climate variability and can play an important role in surface-atmosphere coupling…”
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Surface response to rain events throughout the West African monsoon by Lohou, F, Kergoat, L, Guichard, F, Boone, A, Cappelaere, B, Cohard, J.-M, Demarty, J, Galle, S, Grippa, M, Peugeot, C, Ramier, D, Taylor, C. M, Timouk, F

“…This study analyses the response of the continental surface to rain events, taking advantage of the long-term near-surface measurements over different…”
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Indonesian Throughflow and monsoon activity records in the Timor Sea since the last glacial maximum by Ding, X., Bassinot, F., Guichard, F., Fang, N.Q.

“…Indonesian Throughflow (ITF) is known to play an important role in the heat exchange between the Pacific and the Indian Oceans. However, our understanding of…”
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High frequency sea level fluctuations recorded in the Black Sea since the LGM by Lericolais, G., Bulois, C., Gillet, H., Guichard, F.

“…This paper presents a 3D geometric interpretation of very high resolution seismic Chirp profiles acquired on the Romanian shelf during ASSEMBLAGE European…”
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Parameterization of convective transport in the boundary layer and its impact on the representation of the diurnal cycle of wind and dust emissions by Hourdin, F, Gueye, M, Diallo, B, Dufresne, J-L, Escribano, J, Menut, L, Marticorena, B, Siour, G, Guichard, F

“…We investigate how the representation of the boundary layer in a climate model impacts the representation of the near-surface wind and dust emission, with a…”
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A 90,000–200,000 yrs marine tephra record of Italian volcanic activity in the Central Mediterranean Sea by Paterne, M., Guichard, F., Duplessy, J.C., Siani, G., Sulpizio, R., Labeyrie, J.

“…A detailed tephrochronological study was undertaken in three deep-sea cores collected in the Tyrrhenian and Ionian Seas. The age and the origin of the marine…”
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Coherent combining efficiency in strongly saturated divided-pulse amplification systems by Guichard, F, Lavenu, L, Hanna, M, Zaouter, Y, Georges, P

“…Numerical simulations are performed to analyze effects that limit the combining efficiency in divided-pulse amplification setups. The model allows us to…”
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Edge Direction Preserving Image Zooming: A Mathematical and Numerical Analysis by Malgouyres, F., Guichard, F.

“…We focus in this paper on some reconstruction/restoration methods whose aim is to improve the resolution of digital images. The main point here is to study the…”
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A 60‐year reconstructed high‐resolution local meteorological data set in Central Sahel (1950–2009): evaluation, analysis and application to land surface modelling by Leauthaud, C., Cappelaere, B., Demarty, J., Guichard, F., Velluet, C., Kergoat, L., Vischel, T., Grippa, M., Mouhaimouni, M., Bouzou Moussa, I., Mainassara, I., Sultan, B.

“…ABSTRACT The Sahel has experienced strong climate variability in the past decades. Understanding its implications for natural and cultivated ecosystems is…”
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Representation of daytime moist convection over the semi‐arid Tropics by parametrizations used in climate and meteorological models by Couvreux, F., Roehrig, R., Rio, C., Lefebvre, M.‐P., Caian, M., Komori, T., Derbyshire, S., Guichard, F., Favot, F., D'Andrea, F., Bechtold, P., Gentine, P.

“…A case of daytime development of deep convection over tropical semi‐arid land is used to evaluate the representation of convection in global and regional…”
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