Consulta: subjectFacets:"Lagrangian method"
Registros recuperados: 2
Data/hora: 03/06/2024 11:49:24

A Lagrangian numerical investigation of the origins and fates of the salinity maximum water in the Atlantic
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Blanke, Bruno; Arhan, Michel; Lazar, A; Prevost, Gwenaelle.
The origins and fates of the Atlantic salinity maximum water (SMW), formed through excess evaporation in the tropics and subtropics of both hemispheres, are studied using monthly mean outputs of a numerical simulation of the world ocean climatological circulation. After defining formation domains from the surface salinity field and the vertical stratification, a Lagrangian technique is used to estimate the formation rates and main pathways in each hemisphere and the role of this water in the framework of the warm water return flow of the meridional overturning cell. Formation rates around 9 and 11 Sv are found in the Southern and Northern Hemispheres, respectively. While the export of the southern SMW from its formation area is realized by the western...
Tipo: Text
Palavras-chave: Atlantic ocean; Lagrangian method; Numerical simulation; Salinity; Sea water.
Ano: 2002
URL: https://archimer.ifremer.fr/doc/2002/publication-769.pdf

A stochastic method to account for the ambient turbulence in Lagrangian Vortex computations
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Choma Bex, Camille; Carlier, Clement; Fur, Arnaud; Pinon, Gregory; Germain, Gregory; Rivoalen, Elie.
This paper describes a detailed implementation of the Synthetic Eddy Method (SEM) initially presented in Jarrin et al. (2006) applied to the Lagrangian Vortex simulation. While the treatment of turbulent diffusion is already extensively covered in scientific literature, this is one of the first attempts to represent ambient turbulence in a fully Lagrangian framework. This implementation is well suited to the integration of PSE (Particle Strength Exchange) or DVM (Diffusion Velocity Method), often used to account for molecular and turbulent diffusion in Lagrangian simulations. The adaptation and implementation of the SEM into a Lagrangian method using the PSE diffusion model is presented, and the turbulent velocity fields produced by this method are then...
Tipo: Text
Palavras-chave: Ambient turbulence; Synthetic Eddy Method; Lagrangian method; Turbulence; Vortex method; Wake.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00652/76458/77550.pdf