Open Access Open Access  Restricted Access Subscription or Fee Access

Assimilation of the soil resistance to evaporation in ICARE Model

N. Alaa, W. Bouarifi, G. Chehbouni, R. Khiri, L. Hanich, J.R. Roche


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.

Full Text:


Disclaimer/Regarding indexing issue:

We have provided the online access of all issues and papers to the indexing agencies (as given on journal web site). It’s depend on indexing agencies when, how and what manner they can index or not. Hence, we like to inform that on the basis of earlier indexing, we can’t predict the today or future indexing policy of third party (i.e. indexing agencies) as they have right to discontinue any journal at any time without prior information to the journal. So, please neither sends any question nor expects any answer from us on the behalf of third party i.e. indexing agencies.Hence, we will not issue any certificate or letter for indexing issue. Our role is just to provide the online access to them. So we do properly this and one can visit indexing agencies website to get the authentic information. Also: DOI is paid service which provided by a third party. We never mentioned that we go for this for our any journal. However, journal have no objection if author go directly for this paid DOI service.