Data assimilation and sensitivity of the Black Sea model to parameters

E. Kazantsev

INRIA, MOISE team, Laboratoire Jean Kuntzmann, Grenoble

Аннотация

An adjoint based technique is applied to a Shallow Water Model in order to estimate influence of the model's parameters on the solution. Among parameters the bottom topography, initial conditions, boundary conditions on rigid boundaries, viscosity coefficients and the amplitude of the wind stress tension are considered. Their influence is analyzed from different points of view.

Two configurations have been analyzed: an academic case of the model in a square box and a more realistic case simulating Black Sea currents. It is shown in both experiments that the boundary conditions near a rigid boundary influence the most the solution. This fact points out the necessity to identify optimal boundary approximation during a model development.

Ключевые слова

Variational Data Assimilation, Sensitivity to parameters, Boundary conditions, Shallow water model

Для цитирования

Kazantsev E. Data assimilation and sensitivity of the Black Sea model to parameters // Экологическая безопасность прибрежной и шельфовой зон и комплексное использование ресурсов шельфа. 2011. № 25, т. 2. С. 161–181. EDN WBCLUD.

Kazantsev, E., 2011. Data Assimilation and Sensitivity of the Black Sea Model to Parameters. Ecological Safety of Coastal and Shelf Zones and Comprehensive Use of Shelf Resources, 25(2), pp. 161–181.

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