Articles UME

Abstract
An optimal control approach was carried out to investigate the influence of perturbations of baroclinic coastal jets which are located upstream of the observation site. Two academic numerical experiments were considered: the intrusion of the buoyancy anomaly within an established density current along a straight coast (experiments A), and the interaction of a coastal current [...]

Abstract
The impact of ARGO trajectory assimilation on the quality of ocean analyses is studied by means of an operational oceanographic model implemented in the Mediterranean Sea and a 3D-var assimilation scheme. For the first time, both ARGO trajectories and vertical profiles together with satellite data are assimilated to produce analyses for short term forecasts. The [...]

Abstract
We present a modelling study of the circulation of the North Western Mediterranean Sea done with a high-resolution regional model (1/16°) embedded in a general circulation model of the Mediterranean Sea of lower resolution (1/8°). Focus is given on coastal and near coastal processes, which are the most sensitive for operational oceanography.
The models were forced [...]

Abstract
An innovative way to take the large-scale circulation influence into account in coastal primitive-equation models is explored by an inverse modelling approach. Restricted to barotropic external forcing, this work is a first step in the development of a four-dimensional variational (4DVAR) data-assimilation approach to estimate the best initial and open-boundary conditions that force a coastal [...]

Abstract
The inter-annual variability characteristics of the winter convection in the Gulf of Lion in the Mediterranean Sea are studied using a high resolution model. After a 15-year spinup, the model was forced by the European Centre for Medium-range Weather Forecast (ECMWF) analyses from 1998 to 2008. Deep convection (> 500m) occurs in the MEDOC zone [...]