Search Results - "Demarty, J."

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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AMMA‐CATCH, a Critical Zone Observatory in West Africa Monitoring a Region in Transition by Galle, S., Grippa, M., Peugeot, C., Moussa, I. Bouzou, Cappelaere, B., Demarty, J., Mougin, E., Panthou, G., Adjomayi, P., Agbossou, E.K., Ba, A., Boucher, M., Cohard, J.-M., Descloitres, M., Descroix, L., Diawara, M., Dossou, M., Favreau, G., Gangneron, F., Gosset, M., Hector, B., Hiernaux, P., Issoufou, B.-A., Kergoat, L., Lawin, E., Lebel, T., Legchenko, A., Abdou, M. Malam, Malam-Issa, O., Mamadou, O., Nazoumou, Y., Pellarin, T., Quantin, G., Sambou, B., Seghieri, J., Séguis, L., Vandervaere, J.-P., Vischel, T., Vouillamoz, J.-M., Zannou, A., Afouda, S., Alhassane, A., Arjounin, M., Barral, H., Biron, R., Cazenave, F., Chaffard, V., Chazarin, J.-P., Guyard, H., Koné, A., Mainassara, I., Mamane, A., Oi, M., Ouani, T., Soumaguel, N., Wubda, M., Ago, E.E., Alle, I.C., Allies, A., Arpin-Pont, F., Awessou, B., Cassé, C., Charvet, G., Dardel, C., Depeyre, A., Diallo, F.B., Do, T., Fatras, C., Frappart, F., Gal, L., Gascon, T., Gibon, F., Guiro, I., Ingatan, A., Kempf, J., Kotchoni, D.O.V., Lawson, F.M.A., Leauthaud, C., Louvet, S., Mason, E., Nguyen, C.C., Perrimond, B., Pierre, C., Richard, A., Robert, E., Román-Cascón, C., Velluet, C., Wilcox, C.

“…Core Ideas AMMA‐CATCH is a long‐term critical zone observatory in West Africa. Four sites sample the sharp ecoclimatic gradient characteristic of this region…”
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An evaluation of SCOPE: A tool to simulate the directional anisotropy of satellite-measured surface temperatures by Duffour, C., Olioso, A., Demarty, J., Van der Tol, C., Lagouarde, J.-P.

“…This study assesses the performance of the SCOPE model (Van der Tol et al., 2009) to reproduce directional anisotropy of remote sensing thermal infrared…”
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Driving factors of the directional variability of thermal infrared signal in temperate regions by Duffour, C., Lagouarde, J.-P., Olioso, A., Demarty, J., Roujean, J.-L.

“…Land surface temperature (LST) is a good indicator of the land surface state. The measurement of LST is however prone to directional anisotropy which may…”
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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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The sensitivity of nocturnal low‐level jets and near‐surface winds over the Sahel to model resolution, initial conditions and boundary‐layer set‐up by Schepanski, K., Knippertz, P., Fiedler, S., Timouk, F., Demarty, J.

“…This study explores simulations using the numerical Weather Research and Forecasting (WRF) model, with respect to the representation of the nocturnal low‐level…”
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Assimilation of global MODIS leaf area index retrievals within a terrestrial biosphere model by Demarty, J., Chevallier, F., Friend, A. D., Viovy, N., Piao, Shilong, Ciais, P.

“…We investigate the capability of global leaf area index (LAI) retrievals from the Moderate Resolution Imaging Spectroradiometer (MODIS) to be assimilated…”
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Interannual vegetation phenology estimates from global AVHRR measurements Comparison with in situ data and applications by MAIGNAN, F, BREON, F.-M, BACOUR, C, DEMARTY, J, POIRSON, A

“…In a previous paper, we described a procedure to correct the directional effects in AVHRR reflectance time series. The corrected measurements show much less…”
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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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Building a field- and model-based climatology of local water and energy cycles in the cultivated Sahel – annual budgets and seasonality by Velluet, C, Demarty, J, Cappelaere, B, Braud, I, Issoufou, H. B.-A, Boulain, N, Ramier, D, Mainassara, I, Charvet, G, Boucher, M, Chazarin, J.-P, Oï, M, Yahou, H, Maidaji, B, Arpin-Pont, F, Benarrosh, N, Mahamane, A, Nazoumou, Y, Favreau, G, Seghieri, J

“…In the sub-Saharan Sahel, energy and water cycling at the land surface is pivotal for the regional climate, water resources and land productivity, yet it is…”
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Thermal infrared radiative transfer within three-dimensional vegetation covers by Guillevic, P., Gastellu-Etchegorry, J. P., Demarty, J., Prévot, L.

“…The angular distribution of thermal infrared (TIR) radiation emitted by vegetation covers can vary widely depending on environmental conditions and canopy…”
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Joint assimilation of eddy covariance flux measurements and FAPAR products over temperate forests within a process-oriented biosphere model by Bacour, C., Peylin, P., MacBean, N., Rayner, P. J., Delage, F., Chevallier, F., Weiss, M., Demarty, J., Santaren, D., Baret, F., Berveiller, D., Dufrêne, E., Prunet, P.

“…We investigate the benefits of assimilating in situ and satellite data of the fraction of photosynthetically active radiation (FAPAR) relative to eddy…”
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Revisiting historical climatic signals to better explore the future: prospects of water cycle changes in Central Sahel by Leauthaud, C., Demarty, J., Cappelaere, B., Grippa, M., Kergoat, L., Velluet, C., Guichard, F., Mougin, E., Chelbi, S., Sultan, B.

“…Rainfall and climatic conditions are the main drivers of natural and cultivated vegetation productivity in the semiarid region of Central Sahel. In a context…”
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Contribution of Thermal Infrared Remote Sensing Data in Multiobjective Calibration of a Dual-Source SVAT Model by Coudert, Benoit, Ottlé, Catherine, Boudevillain, Brice, Demarty, Jérôme, Guillevic, Pierre

“…This study fits within the overall research on the usage of space remote sensing data to constrain land surface models (LSMs) (also called SVAT models for…”
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Using a multiobjective approach to retrieve information on surface properties used in a SVAT model by Demarty, J, Ottlé, C, Braud, I, Olioso, A, Frangi, J.P, Bastidas, L.A, Gupta, H.V

“…The reliability of model predictions used in meteorology, agronomy or hydrology is partly linked to an adequate representation of the water and energy balances…”
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Interannual vegetation phenology estimates from global AVHRR measurements by Maignan, F., Bréon, F.-M., Bacour, C., Demarty, J., Poirson, A.

“…In a previous paper, we described a procedure to correct the directional effects in AVHRR reflectance time series. The corrected measurements show much less…”
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Growing season extension and its impact on terrestrial carbon cycle in the Northern Hemisphere over the past 2 decades by Piao, S, Friedlingstein, P, Ciais, P, Viovy, N, Demarty, J

“…A number of studies have suggested that the growing season duration has significantly lengthened during the past decades, but the connections between phenology…”
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Contrasting responses of woody and herbaceous vegetation to altered rainfall characteristics in the Sahel by Verbruggen, Wim, Schurgers, Guy, Horion, Stéphanie, Ardö, Jonas, Bernardino, Paulo N, Cappelaere, Bernard, Demarty, Jérôme, Fensholt, Rasmus, Kergoat, Laurent, Sibret, Thomas, Tagesson, Torbern, Verbeeck, Hans

“…Dryland ecosystems are a major source of land cover, account for about 40% of Earth's terrestrial surface and net primary productivity, and house more than 30…”
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Evaluating surface and subsurface water storage variations at small time and space scales from relative gravity measurements in semiarid Niger by Pfeffer, Julia, Champollion, Cédric, Favreau, Guillaume, Cappelaere, Bernard, Hinderer, Jacques, Boucher, Marie, Nazoumou, Yahaya, Oï, Monique, Mouyen, Maxime, Henri, Christopher, Le Moigne, Nicolas, Deroussi, Sébastien, Demarty, Jérôme, Boulain, Nicolas, Benarrosh, Nathalie, Robert, Olivier

“…The acquisition of reliable data sets representative of hydrological regimes and their variations is a critical concern for water resource assessment. For the…”
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Modeling gas exchange and biomass production in West African Sahelian and Sudanian ecological zones by Rahimi, Jaber, Ago, Expedit Evariste, Ayantunde, Augustine, Berger, Sina, Bogaert, Jan, Butterbach-Bahl, Klaus, Cappelaere, Bernard, Cohard, Jean-Martial, Demarty, Jérôme, Diouf, Abdoul Aziz, Falk, Ulrike, Haas, Edwin, Hiernaux, Pierre, Kraus, David, Roupsard, Olivier, Scheer, Clemens, Srivastava, Amit Kumar, Tagesson, Torbern, Grote, Rüdiger

“…West African Sahelian and Sudanian ecosystems provide essential services to people and also play a significant role within the global carbon cycle. However,…”
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