SYMPHONIE_LATEX : Numerical modelling of the coastal circulation for the LATEX Project

The LAgrangian Transport EXperiment (LATEX) project (2008-2011) is designed to study the mechanisms of formation of anticyclonic eddies and their influence on cross-shelf exchanges in the western part of the GoL.

The dynamics of mesoscale eddies is particularly important in this part of the GoL since it represents a key region for regulating the outflow from the continental shelf. The eddy dynamics is investigated using Symphonie, a 3-dimensional, primitive equation model, with a free sea surface, hybrid sigma coordinates, based on Boussinesq and hydrostatic approximations [Marsaleix et al., 2006, 2008]. We use the upwind-type advection-diffusion scheme adapted by Hu et al. [2009] to improve the ability of the model to reproduce coastal mesoscale eddies in the western part of the GoL.

In the present study, the model is implemented over the whole GoL with an horizontal resolution of 1 km × 1 km (Figure 1). The vertical discretization consists of 40-hybrid vertical levels. The vertical resolution varies from 1 m in the upper ocean to 40 m near the bottom.

"For a complete review of the LATEX projet, see :

- Petrenko, A., A., Doglioli, A.M., Nencioli, F., Kersalé, M., Hu, Z., d'Ovidio, F. (2017). A review of the LATEX project: mesoscale to submesoscale processes in a coastal environment. Ocean Dynam., 67:513

- doi: 10.1007/s10236-017-1040-9

- https://doi.org/10.1007/s10236-017-1040-9

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Le projet LAgrangian Transport EXperiment (LATEX) (2008-2011) est conçu pour étudier les mécanismes de formation des tourbillons anticycloniques et leur influence sur les échanges entre plateaux dans la partie occidentale du GdL.

La dynamique des tourbillons à méso-échelle est particulièrement importante dans cette partie du GdL, car elle représente une région clé pour la régulation du flux sortant du plateau continental. La dynamique des tourbillons est étudiée à l'aide de Symphonie, un modèle d'équation primitive tridimensionnel, avec une surface de mer libre, des coordonnées sigma hybrides, basé sur Boussinesq et des approximations hydrostatiques [Marsaleix et al., 2006, 2008]. Nous utilisons le schéma d'advection-diffusion de type vent debout adapté par Hu et al [2009] pour améliorer la capacité du modèle à reproduire les tourbillons côtiers à méso-échelle dans la partie occidentale du GdL.

Dans la présente étude, le modèle est mis en œuvre sur l'ensemble du GdL avec une résolution horizontale de 1 km × 1 km (Figure 1). La discrétisation verticale est constituée de 40 niveaux verticaux hybrides. La résolution verticale varie de 1 m dans la partie supérieure de l'océan à 40 m près du fond.

Pour plus d'information sur le projet LATEX :

- doi:10.1007/s10236-017-1040-9

- https://doi.org/10.1007/s10236-017-1040-9

Date (Publication): 2020-01-31

Edition: https://www.mio.osupytheas.fr

Citation identifier: http://dataset.osupytheas.fr/geonetwork/srv/resourcesefe06036-cfcf-4a77-b073-2b05ecd8b32f

Purpose: Numerical modelling of the coastal circulation for the LATEX Project

Status: Completed

Point of contact

MIO UMR 7294 CNRS - andrea Doglioli ( )

Point of contact

MIO UMR 7294 CNRS - Anne Petrenko

Maintenance and update frequency: As needed

Theme

hydrodynamique
tourbillons
Mer Méditerranée
Fine-scale ocean circulation
cytometry
satelite remote sensing

GEMET - INSPIRE themes, version 1.0

Hydrography
Oceanographic geographical features

GEMET - Concepts, version 2.4

temperature
marine environment
hydrometry

Continents, countries, sea regions of the world.

Mediterranean Sea

Access constraints: Copyright

Use constraints: otherRestictions

Spatial representation type: Vector

Denominator: 25000

Language: English

Character set: UTF8

Topic category

Environment
Oceans

Begin date: 2001-01-09

End date: 2011-12-31

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Reference system identifier: WGS 1984

Distribution format

Raw Data ( 1.0 )

Distributor

MIO UMR 7294 CNRS - andrea Doglioli

OnLine resource: symphonie ( WWW:LINK-1.0-http--link )

OnLine resource: DOI Symphonie ( null )

OnLine resource: symphonie data model ( WWW:LINK-1.0-http--link )

Hierarchy level: Dataset

Statement: All the détails about the numerical model and its implementation can be found in the following papers :

- Hu, Z.H., Doglioli, A.M., Petrenko, A.A., Marsaleix, P., Dekeyser, I. (2009), Numerical simulations of eddies in the Gulf of Lion. Ocean Model., Vol. 28/4, pp. 203-208, doi: 10.1016/j.ocemod.2009.02.004 .

- Hu, Z.H., Petrenko, A.A., Doglioli, A.M., Dekeyser, I. (2011). Numerical study of eddy generation in the western part of the Gulf of Lion. J. Geophys. Res., Vol.116, C12030, doi:10.1029/2011JC007074.

- Kersalé, M., Petrenko, A.A., Doglioli, A.M., Dekeyser, I., Nencioli, F. (2013). Physical characteristics and dynamics of the coastal Latex09 Eddy derived from in situ data and numerical modeling. J. Geophys. Res., Vol.118, pp.1-11,