Variational Data Assimilation in Problems of Modeling Hydrophysical Fields in Open Water Areas

Autor:	T. O. Sheloput, Vladimir Zalesny, V. I. Agoshkov
Rok vydání:	2020
Předmět:	Atmospheric Science Open water Data assimilation Circulation (fluid dynamics) Numerical analysis Boundary (topology) Applied mathematics Inverse Boundary value problem Inverse problem Oceanography Physics::Atmospheric and Oceanic Physics Mathematics
Zdroj:	Izvestiya, Atmospheric and Oceanic Physics. 56:253-267
ISSN:	1555-628X 0001-4338
DOI:	10.1134/s0001433820030020
Popis:	The formulation of boundary conditions at liquid (open) boundaries is a topical problem in mathematically modeling the hydrothermodynamics of open water areas. Variational data assimilation is one method allowing one to take into account liquid boundaries in models. According to the approach considered in this paper, observational data at a certain time are given and the problem is treated as an inverse one with open boundary flows as additional unknowns. This paper presents a formulation of the general problem of the variational assimilation of observational data for a model of the hydrothermodynamics of open water areas based on the splitting method. Algorithms for the variational assimilation of temperature and sea-level data at the liquid boundary are formulated and the results of numerical experiments on the use of the algorithms in the Baltic Sea circulation model are presented.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4cfdfc4f1f688cf39bad1fc818386852 https://doi.org/10.1134/s0001433820030020 Zobrazit plný text záznamu Full text from SpringerLink