Search Results - "Karbou, F."

Land surface temperature estimation to improve the assimilation of SEVIRI radiances over land by Guedj, S., Karbou, F., Rabier, F.

“…The aim of this work is to estimate the land surface temperature from satellite observations in order to improve the assimilation of surface‐sensitive infrared…”
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Microwave land emissivity calculations using AMSU measurements by Karbou, F., Prigent, C., Eymard, L., Pardo, J.R.

“…Atmospheric parameter retrievals over land from Advanced Microwave Sounding Unit (AMSU) measurements, such as atmospheric temperature and moisture profiles,…”
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Toward a Better Modeling of Surface Emissivity to Improve AMSU Data Assimilation Over Antarctica by Guedj, S., Karbou, F., Rabier, F., Bouchard, A.

“…This work is in direct line with the Concordiasi international project. It aims to better constrain atmospheric analyses by improving the assimilation of…”
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Two microwave land emissivity parameterizations suitable for AMSU observations by Karbou, F.

“…In this work, two microwave emissivity parameterizations are proposed to estimate the land emissivity at Advanced Microwave Sounding Units (AMSU) frequencies…”
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On the use of Advanced Microwave Sounding Unit-A and -B measurements for studying the monsoon variability over West Africa by Eymard, Laurence, Karbou, F., Janicot, S., Chouaib, N., Pinsard, F.

“…The advanced microwave sounding unit (AMSU) ‐A and ‐B sensors provide observations of humidity and temperature that are relevant for meteorological and climate…”
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Calculation of microwave land surface emissivity from satellite observations: validity of the specular approximation over snow-free surfaces? by Karbou, F., Prigent, C.

“…To determine land surface emissivity from satellite microwave measurements, the surface is usually assumed to be specular. Questions about the validity of this…”
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Long-term stability of ERS-2 and TOPEX microwave radiometer in-flight calibration by Eymard, L., Obligis, E., Ngan Tran, Karbou, F., Dedieu, M.

“…The microwave radiometers on altimeter missions are specified to provide the "wet" troposphere path delay with an uncertainty of 1 cm or lower, at the location…”
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Cross Characterization of Alpine Snow Packs Using a Portable 3-D HR Imaging System, C-Band Spaceborne SAR Observations, In-Situ Measurements and a Physically Based Snow Evolution Model by Ferro-Famil, L., Karbou, F., Harkati, L., Lapalus, Ph, Avrillon, S., Boutet, F., Deliot, Y., Mersizen, H., Goutevin, I., Salze, P., Delbart, F., Karas, A., Besombes, R., Le Gac, E., Bellot, H., Ravanat, X.

“…This paper proposes to use ground-based high-resolution 3-D radar imaging, in order to study the interaction between electromagnetic waves and snow packs, and…”
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Satellite-derived products of solar and longwave irradiances used for snowpack modelling in mountainous terrain by Quéno, Louis, Karbou, Fatima, Vionnet, Vincent, Dombrowski-Etchevers, Ingrid

“…In mountainous terrain, the snowpack is strongly affected by incoming shortwave and longwave radiation. In this study, a thorough evaluation of the solar and…”
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OZCAR: The French Network of Critical Zone Observatories by Gaillardet, J., Braud, I., Hankard, F., Anquetin, S., Bour, O., Dreuzy, J.R., Galle, S., Galy, C., Gogo, S., Habets, F., Laggoun, F., Longuevergne, L., Naaim-Bouvet, F., Nord, G., Simonneaux, V., Six, D., Tallec, T., Abril, G., Arènes, A., Arfib, B., Arnaud, L., Arnaud, P., Comte, V. Bailly, Batiot, C., Battais, A., Bellot, H., Bertrand, C., Bodin, J., Bodin, X., Bouchez, J., Boudevillain, B., Moussa, I. Bouzou, Caceres, B., Calmels, D., Cappelaere, B., Celle-Jeanton, H., Chabaux, F., Chalikakis, K., Champollion, C., Copard, Y., Cotel, C., Davy, P., Demarty, J., Dessert, C., Dumont, M., Emblanch, C., Ezzahar, J., Estèves, M., Favier, V., Faucheux, M., Filizola, N., Flammarion, P., Floury, P., Fovet, O., Francez, A. J., Gandois, L., Gérard, M. F., Gouttevin, I., Grippa, M., Gruau, G., Jardani, A., Jeanneau, L., Jourde, H., Lagadeuc, Y., Lajeunesse, E., Lavado, W., Lawin, E., Lejeune, Y., Le Moigne, N., Lions, J., Lucas, A., Marais-Sicre, C., Marlin, C., Martin, P., Massei, N., Mauclerc, A., Mazzilli, N., Mougin, E., Morin, S., Ngoupayou, J. Ndam, Panthou, G., Pierret, M. C., Probst, A., Raclot, D., Ravanel, L., René, P., Riotte, J., Rivière, A., Robain, H., Ruiz, L., Santini, W., Sauvage, S., Schoeneich, P., Seidel, J. L., Sengtaheuanghoung, O., Steinmann, M., Lao, D. Valdes, Vincent, C., Viville, D., Zitouna, R.

“…Core Ideas OZCAR is a network of sites studying the critical zone. OZCAR covers various disciplines. OZCAR will help disciplines to work together for a better…”
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Mapping and characterization of avalanches on mountain glaciers with Sentinel-1 satellite imagery by Kneib, Marin, Dehecq, Amaury, Brun, Fanny, Karbou, Fatima, Charrier, Laurane, Leinss, Silvan, Wagnon, Patrick, Maussion, Fabien

“…Avalanches are important contributors to the mass balance of glaciers located in mountain ranges with steep topographies. Avalanches result in localized…”
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Snowpack modelling in the Pyrenees driven by kilometric-resolution meteorological forecasts by Quéno, Louis, Vionnet, Vincent, Dombrowski-Etchevers, Ingrid, Lafaysse, Matthieu, Dumont, Marie, Karbou, Fatima

“…Distributed snowpack simulations in the French and Spanish Pyrenees are carried out using the detailed snowpack model Crocus driven by the numerical weather…”
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An interval approach to handwriting recognition by Karbou, F.

“…A language is a set of symbols, signs, sounds, ... Each language has its own signs (Arab, Japanese, Latin...) that people discern easily. In fact, one gives…”
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Combined use of volume radar observations and high-resolution numerical weather predictions to estimate precipitation at the ground: methodology and proof of concept by Le Bastard, Tony, Caumont, Olivier, Gaussiat, Nicolas, Karbou, Fatima

“…The extrapolation of the precipitation to the ground from radar reflectivities measured at the beam altitude is one of the most delicate phases of radar data…”
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GNSS reflectometry measurement of snow depth and soil moisture in the French Alps by Boniface, K., Walpersdorf, A., Guyomarc'h, G., Deliot, Y., Karbou, F., Vionnet, V., Nievinski, F.

“…Over the last ten years Earth observing systems have grown considerably and thus allow the use of Global Navigation Satellite System (GNSS) signals for remote…”
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An Evaluation of Microwave Land Surface Emissivities Over the Continental United States to Benefit GPM-Era Precipitation Algorithms by Ferraro, R. R., Peters-Lidard, C. D., Hernandez, C., Turk, F. J., Aires, F., Prigent, C., Xin Lin, Boukabara, S., Furuzawa, F. A., Gopalan, K., Harrison, K. W., Karbou, F., Li Li, Chuntao Liu, Masunaga, H., Moy, L., Ringerud, S., Skofronick-Jackson, G. M., Yudong Tian, Nai-Yu Wang

“…Passive microwave (PMW) satellite-based precipitation over land algorithms rely on physical models to define the most appropriate channel combinations to use…”
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On interval descriptions of spatial relations by Karbou, F.

“…In this paper, we propose an extension of the principle of the interval's approach to define new directional and qualitative topological relations where the…”
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High‐resolution prediction of a major convective period over West Africa by Beucher, Florent, Lafore, Jean‐Philippe, Karbou, Fatima, Roca, Rémy

“…In this article, we evaluate the predictions of the French cloud‐resolving model AROME using a set of high‐resolution (5 km) simulations that focus on the well…”
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Microwave land emissivity and skin temperature for AMSU‐A and ‐B assimilation over land by Karbou, Fatima, Gérard, Élisabeth, Rabier, Florence

“…AMSU‐A and ‐B measurements are still not extensively used over land surfaces for atmospheric applications. Recent studies have shown that it should now be…”
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Potential of Advanced Microwave Sounding Unit-A (AMSU-A) and AMSU-B measurements for atmospheric temperature and humidity profiling over land by Karbou, Fatima, Aires, Filipe, Prigent, Catherine, Eymard, Laurence

“…A neural network retrieval method has been applied to investigate AMSU‐A/AMSU‐B atmospheric temperature and humidity profiling capabilities over land. The…”
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