Search Results - "Lothon, m"

Trade Wind Boundary Layer Turbulence and Shallow Precipitating Convection: New Insights Combining SAR Images, Satellite Brightness Temperature, and Airborne In Situ Measurements by Brilouet, P.‐E., Bouniol, D., Couvreux, F., Ayet, A., Granero‐Belinchon, C., Lothon, M., Mouche, A.

“…The imprint of marine atmospheric boundary layer (MABL) dynamical structures on sea surface roughness, as seen from Sentinel‐1 synthetic aperture radar (SAR)…”
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The frictional layer in the observed momentum budget of the trades by Nuijens, L., Savazzi, A., Boer, G., Brilouet, P‐E., George, G., Lothon, M., Zhang, D.

“…Profiles of eddy momentum flux divergence are calculated as the residual in the momentum budget constructed from airborne circular dropsonde arrays (∼$$ \sim…”
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Turbulence vertical structure of the boundary layer during the afternoon transition by Darbieu, C, Lohou, F, Lothon, M, Vilà-Guerau de Arellano, J, Couvreux, F, Durand, P, Pino, D, Patton, E. G, Nilsson, E, Blay-Carreras, E, Gioli, B

“…We investigate the decay of planetary boundary layer (PBL) turbulence in the afternoon, from the time the surface buoyancy flux starts to decrease until…”
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Observations of Thermally Driven Circulations in the Pyrenees: Comparison of Detection Methods and Impact on Atmospheric Composition Measured at a Mountaintop by Hulin, M., Gheusi, F., Lothon, M., Pont, V., Lohou, F., Ramonet, M., Delmotte, M., Derrien, S., Athier, G., Meyerfeld, Y., Bezombes, Y., Augustin, P., Ravetta, F.

“…The atmospheric composition measured at the Pic du Midi high-altitude observatory (2875 m MSL) in the French Pyrenees is frequently affected by upward…”
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Role of the residual layer and large-scale subsidence on the development and evolution of the convective boundary layer by Blay-Carreras, E, Pino, D, Vilà-Guerau de Arellano, J, van de Boer, A, De Coster, O, Darbieu, C, Hartogensis, O, Lohou, F, Lothon, M, Pietersen, H

“…Observations, mixed-layer theory and the Dutch Large-Eddy Simulation model (DALES) are used to analyze the dynamics of the boundary layer during an intensive…”
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Countergradient heat flux observations during the evening transition period by Blay-Carreras, E, Pardyjak, E. R, Pino, D, Alexander, D. C, Lohou, F, Lothon, M

“…Gradient-based turbulence models generally assume that the buoyancy flux ceases to introduce heat into the surface layer of the atmospheric boundary layer in…”
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Estimation of the advection effects induced by surface heterogeneities in the surface energy budget by Cuxart, Joan, Wrenger, Burkhard, Martínez-Villagrasa, Daniel, Reuder, Joachim, Jonassen, Marius O, Jiménez, Maria A, Lothon, Marie, Lohou, Fabienne, Hartogensis, Oscar, Dünnermann, Jens, Conangla, Laura, Garai, Anirban

“…The effect of terrain heterogeneities in one-point measurements is a continuous subject of discussion. Here we focus on the order of magnitude of the advection…”
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Study of a prototypical convective boundary layer observed during BLLAST: contributions by large-scale forcings by Pietersen, H. P, Vilà-Guerau de Arellano, J, Augustin, P, van de Boer, A, de Coster, O, Delbarre, H, Durand, P, Fourmentin, M, Gioli, B, Hartogensis, O, Lohou, F, Lothon, M, Ouwersloot, H. G, Pino, D, Reuder, J

“…We study the influence of the large-scale atmospheric contribution to the dynamics of the convective boundary layer (CBL) in a situation observed during the…”
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Phenomenology of Sahelian convection observed in Niamey during the early monsoon by Dione, C., Lothon, M., Badiane, D., Campistron, B., Couvreux, F., Guichard, F., Sall, S. M.

“…This study aims to achieve a better understanding of the initiation of deep convection in the Sahel by using the African Monsoon Multidisciplinary Analyses…”
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Initiation of daytime local convection in a semi-arid region analysed with high-resolution simulations and AMMA observations by Couvreux, F., Rio, C., Guichard, F., Lothon, M., Canut, G., Bouniol, D., Gounou, A.

“…A modelling case study designed from observations from the African Monsoon Multidisciplinary Analysis (AMMA) is presented and discussed. It aims at…”
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Observation of entrainment at the interface between monsoon flow and the Saharan Air Layer by Canut, G., Lothon, M., Saïd, F., Lohou, F.

“…During the AMMA experiment, the French ATR aircraft flew in the lower troposphere in south Niger, with instruments that allow fast measurement of wind,…”
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Wind profiler analysis of the African Easterly Jet in relation with the boundary layer and the Saharan heat‐low by Kalapureddy, M. C. R., Lothon, M., Campistron, B., Lohou, F., Saïd, F.

“…Wind profiler measurements in Niger and Benin during the African Monsoon Multidisciplinary Analysis project are used to study the intraseasonal variability of…”
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Seasonal evolution of boundary‐layer turbulence measured by aircraft during the AMMA 2006 Special Observation Period by Saïd, F., Canut, G., Durand, P., Lohou, F., Lothon, M.

“…During the African Monsoon Multidisciplinary Analysis (AMMA) field campaign, the ATR research aircraft made observations of fluxes and thermodynamics during…”
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Turbulence measurements in marine stratocumulus with airborne Doppler radar by Lothon, M., Lenschow, D. H., Leon, D., Vali, G.

“…This study investigates the ability of a W‐band radar to measure turbulence structure as a function of height throughout the drizzling marine boundary layer…”
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Numerical simulation of meso‐gamma scale features of föhn at ground level in the Rhine valley by Jaubert, G., Bougeault, P., Berger, H., Chimani, B., Flamant, C., Häberli, C., Lothon, M., Nuret, M., Vogt, S.

“…This paper examines the impact of a mesoscale analysis (2.5 km grid distance) on the simulation of the meso‐gamma scale aspects of föhn in the Rhine Valley…”
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Scale interaction processes during the MAP IOP 12 south föhn event in the Rhine Valley by Drobinski, P., Haeberli, C., Richard, E., Lothon, M., Dabas, A. M., Flamant, P. H., Furger, M., Steinacker, R.

“…This paper examines the three‐dimensional structure and dynamics of a south föhn flow in the Rhine Valley during its entire life cycle from 29 October 1999…”
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ESCOMPTE experiment: intercomparison of four aircraft dynamical, thermodynamical, radiation and chemical measurements by Saïd, F., Corsmeier, U., Kalthoff, N., Kottmeier, C., Lothon, M., Wieser, A., Hofherr, T., Perros, P.

“…Among seven airplanes involved in the Experience sur Site pour COntraindre les Modèles de Pollution atmosphérique et de Transport d'Emission (ESCOMPTE)…”
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Unstationary aspects of foehn in a large valley part I: operational setup, scientific objectives and analysis of the cases during the special observing period of the MAP subprogramme FORM by RICHNER, H, BAUMANN-STANZER, K, HÄBERLI, C, HÄLLER, E, LOTHON, M, MITEV, V, RUFFIEUX, D, SEIZ, G, STEINACKER, R, TSCHANNETT, S, VOGT, S, WERNER, R, BENECH, B, BERGER, H, CHIMANI, B, DORNINGER, M, DROBINSKI, P, FURGER, M, GUBSER, S, GUTERMANN, T

“…The Rhine valley, which stretches from the main Alpine crest to the Lake of Constance, was chosen as the target area to study unstationary aspects of foehn…”
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Nocturnal low-level clouds in the atmospheric boundary layer over southern West Africa: an observation-based analysis of conditions and processes by Adler, Bianca, Babić, Karmen, Kalthoff, Norbert, Lohou, Fabienne, Lothon, Marie, Dione, Cheikh, Pedruzo-Bagazgoitia, Xabier, Andersen, Hendrik

“…During the West African summer monsoon season, extended nocturnal stratiform low-level clouds (LLCs) frequently form in the atmospheric boundary layer over…”
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Nocturnal boundary layer turbulence regimes analysis during the BLLAST campaign by Yus-Díez, Jesús, Udina, Mireia, Soler, Maria Rosa, Lothon, Marie, Nilsson, Erik, Bech, Joan, Sun, Jielun

“…A night-time turbulence regime classification, the so-called “HOckey-Stick Transition ” (HOST) theory, proposed by Sun et al. (2012) from the Cooperative…”
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