СРАВНЕНИЕ ДВУХ МЕТОДОВ АССИМИЛЯЦИИ ДАННЫХ, ИСПОЛЬЗУЕМЫХ ДЛЯ УЧЕТА ОТКРЫТЫХ ГРАНИЦ ПРИ МОДЕЛИРОВАНИИ ГИДРОТЕРМОДИНАМИКИ В МОРСКИХ АКВАТОРИЯХ

Abstract

The problems of modeling hydrothermodynamics of particular sea and coastal areas are of current interest, since the results of this modeling are often used in many applications. One of the methods allowing to take into account open boundaries and bring the simulation results closer to real data is the variational assimilation of observational data. In this paper the following approach is considered: it is supposed that there are observational data at a certain moment in time; the problem is considered as an inverse problem, in which the functions of fluxes across the open boundary are treated as additional unknowns. Comparison of methods for reconstructing unknown functions in boundary conditions at an open boundary using sea level and velocity observational data in a number of numerical experiments for a region of a simple shape is carried out.