Parameterization of atmospheric forcing in the test task of wind circulation in the sea
UDC
51.37EDN
ISBHZFDOI:
10.31429/vestnik-18-4-29-32Abstract
The paper presents a method of variational identification of parameters for setting an analytical wind effect for a wind circulation model in a dimensionless form. When implementing such a procedure, the search for a solution is carried out by plane rotation of the original system of algebraic equations for expansion coefficients for tangential stresses. Due to the transformation of plane rotations, an equivalent system is constructed in which the equations with the highest rank and informativeness are located in the upper rows. The rotation angles are found from the maximum of the functional that characterizes the ratio of the coefficients of the system, a priori information about the solution and the right parts. The algorithm is carried out iteratively. The conducted test numerical experiments have shown that when using accurate data, any combination of the equations of the system gives an exact solution for the expansion coefficients. In case of data noise, this does not happen. After the operation of the procedure, when all the information from the measurement data is taken into account in the upper equations, the resulting solution agrees well with the originally set one.
Keywords:
functional maximization, transformations of plane rotations, wind circulation model, identification of model parametersFunding information
The work was carried out within the framework of the state task on the topic 0555-2021-0005 "Complex interdisciplinary studies of oceanographic processes that determine the functioning and evolution of eco-systems of the coastal zones of the Black and Azov Seas" (code "Coastal research").
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