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Centre d'études spatiales de la biosphère |  |
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Centre d'études spatiales de la biosphère | |
| HAL: inria-00589753, version 1 |
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| International Journal of Mathematics and Statistics 4, S09 (2009) 38-56 |
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| Assimilation of the soil resistance to evaporation in ICARE |
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| Nourredine Alaa 1W. Bouarifi 2 |
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| (2009) |
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| In recent years, understanding and quantifying the global hydrologic cycle has become a priority research topic. Hydrologists now face the challenge to apply true data assimilation techniques to all problems where remote sensing data can provide new insights. However, this is a difficult task due to the highly nonlinear nature of land-surface processes, the size of the problem, and the lack of data and experience to determine error statistics accurately. Consequently, the implementation of data assimilation techniques always requires trade-offs between resolution, complexity, computational effort, and data availability. Our approach is based in variational data assimilation. All control theory or variational assimilation approaches perform a global time-space adjustment of the model solution to all observations and thus solve a smoothing problem. Firstly, we give a description about the site of this study and then we describe the modeling approach used to simulate the temperatures and moistures in SVAT-ICARE model. The optimisation problem is then formulated in the framework of control optimal theory, followed by a brief discussion of genetic algorithms used in the optimization algorithm. |
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| 1: | Faculte des Sciences et Techniques (FSTG) |
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Universite Cady Ayyad |
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| 2: | Faculte des Sciences et Techniques Gueliz. (FSTG) |
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Universite Cadi Ayyad-Marrakech |
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| 3: | Centre d'études spatiales de la biosphère (CESBIO) |
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CNRS : UMR5126 – Institut de recherche pour le développement [IRD] – CNES – Observatoire Midi-Pyrénées – INSU – Université Paul Sabatier [UPS] - Toulouse III |
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| 4: | Institut Elie Cartan Nancy (IECN) |
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CNRS : UMR7502 – INRIA – Université Henri Poincaré - Nancy I – Université Nancy II – Institut National Polytechnique de Lorraine (INPL) |
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| 5: | CALVI (INRIA Nancy - Grand Est / IECN / LSIIT / IRMA) |
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CNRS : UMR7005 – INRIA – Université de Strasbourg – Université de Lorraine |
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| Domain | : | Mathematics/Optimization and Control |
| inria-00589753, version 1 | |
| http://hal.inria.fr/inria-00589753 | |
| oai:hal.inria.fr:inria-00589753 | |
| From: Jean Rodolphe Roche | |
| Submitted on: Sunday, 1 May 2011 18:47:10 | |
| Updated on: Tuesday, 3 May 2011 16:07:19 | |
