Titre :

Multi-scale coastal surface temperature in the Bay of Biscay and the English Channel

Auteur(s) :

Charria, Guillaume [Auteur]
Laboratoire d'Océanographie Physique et Spatiale [LOPS]
Theetten, Sébastien [Auteur]
Laboratoire d'Océanographie Physique et Spatiale [LOPS]
Ayouche, Adam [Auteur]
Laboratoire d'Océanographie Physique et Spatiale [LOPS]
Poppeschi, Coline [Auteur]
Laboratoire d'Océanographie Physique et Spatiale [LOPS]
Sudre, Joël [Auteur]
Laboratoire d'Océanographie Physique et Spatiale [LOPS]
Laboratoire d'études en Géophysique et océanographie spatiales [LEGOS]
Yahia, Hussein [Auteur]
Geometry and Statistics in acquisition data [GeoStat]
Garcon, Veronique [Auteur]
Laboratoire d'études en Géophysique et océanographie spatiales [LEGOS]
Schmitt, François G [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]

Titre de la manifestation scientifique :

EGU 2020 General Assembly

Ville :

Vienna

Pays :

Autriche

Date de début de la manifestation scientifique :

2020-05-04

Date de publication :

2020-05-06

Discipline(s) HAL :

Planète et Univers [physics]/Océan, Atmosphère
Informatique [cs]/Traitement du signal et de l'image [eess.SP]

Résumé en anglais : [en]

The Bay of Biscay and the English Channel, in the Northeastern Atlantic, are considered as a natural laboratory to explore the coastal dynamics at different spatial and temporal scales. In those regions, the coastal ...
Lire la suite >The Bay of Biscay and the English Channel, in the Northeastern Atlantic, are considered as a natural laboratory to explore the coastal dynamics at different spatial and temporal scales. In those regions, the coastal circulation is constrained by a complex topography (e.g. varying width of the continental shelf, canyons), river runoffs, strong tides and a seasonally contrasted wind-driven circulation. Based on different numerical model experiments (from 400m to 4km spatial resolution, from 40 to 100 sigma vertical layers using 3D primitive equation ocean models), different features of the Bay of Biscay and English Channel circulation are assessed and explored. Both spatial (submesoscale and mesoscale) and temporal (from hourly to monthly) scales are considered. Modelled spatial scales, with a specific focus on the variability of fine scale features (e.g. fronts, filaments, eddies), are compared with remotely sensed observations (i.e. Sea Surface Temperature). Different methodologies as singularity and Lyapunov exponents allow describing fine scales features and are applied on both modelled and observed datasets. For temporal scales, in situ high frequency surface temperature measurements from coastal moorings (from COAST-HF observing network) provide a reference for the temporal variability to be modelled. Exploring differences in the temporal scales (from an Empirical Mode Decomposition) advises on the efficiency of our coastal modelling approach. This result overview in the Bay of Biscay and the English Channel aims illustrating the input of coastal modelling activities in understanding multi-scale interactions (spatial and temporal).Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

• Laboratoire d'Océanologie et de Géosciences (LOG) - UMR 8187

Source :

Harvested from HAL