Modélisation barotrope de la réponse océanique aux forçages météorologiques L. Carrère F. Lyard
MOG2D model (developed at LEGOS) FE, (multi time-step) time-stepping; Lagrange P1 fully non-linear variable time step, low viscosity (+smagorinsky) ensemble method for assimilation spherical coordinates quadratic bottom friction, internal wave dissipation tidal potential (astronomic + self-attraction) tidal loading
Medium resolution FE mesh nodes deep ocean: 400 km shallow waters: 20 km
Variance reduction in T/P sea level measurements compared to inverted barometer correction
MOG2d sélectionné pour la correction Topex/Poseidon - Jason Inter-comparaison de la réduction de variance du signal altimétrique: (Nouvelle-Orléans, octobre 2002) Mog2d Modèle du JPL
S1 atmospheric tide Amplitude (cm) Phase lag (degres) from ECMWF 6 hour analysis harmonic analysis of sea level pressure over the period
Forçage des applications régionales European shelf Coastal dynamic Gravity waves (MOG2D/3D) Regional and shelf circulation (HYCOM,SYMPHONIE,MARS) Process studies HF/LF, deep/shallow ocean, ocean/atmophere, physic/biology Control and analysis Sensitivity, model error space, observability, predicibility, assimilation
Développements futurs Ajustement de la physique du modèle Optimisation des paramètres modèles Grille haute résolution Assimilation
High resolution FE mesh P2 nodes deep ocean: 150/75 km shallow waters: 15/7.5 km
Assimilation in Mog2d Representers (sea level) Ensemble based computation for model error due to bathymetry (B. mourre, 2002) Isobathe 200m +1
BESOINS AIDE A LA REALISATION, FONCTIONNEMENT: Frais de publications (JGR)2 k€ FRAIS DE MISSION: SWT(2 personnes)1 k€ TOTAL FONCTIONNEMENT 3 k€ MATERIEL: Jouvence informatique (1 poste)2 k€ TOTAL MATERIEL3 k€