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From basin to subbasin scale assessment and intercomparison of numerical simulations in the Western Mediterranean Sea

AutorJuzà, Melanie; Mourre, Baptiste ; Lellouche, Jean Michel; Tonani, Marina; Tintoré, Joaquín
Palabras claveMediterranean Forecasting System
Multiplatform and multiscale observations
Numerical simulations
Subbasin scale assessment
Western Mediterranean Sea
Fecha de publicación23-abr-2015
CitaciónJournal of Marine Systems 149: 36-49 (2015)
Resumen© 2015 Elsevier B.V. This study describes a quantitative evaluation of simulations in the western Mediterranean Sea at basin and subbasin scales. The Mediterranean Forecasting System and the MercatorOcéan simulations provide operational ocean forecasts and hindcasts in the Mediterranean, and are also used as initial and boundary conditions for regional models. In this context, hindcast simulations from 2009 to 2012 are compared with available multiplatform observations at various spatial and temporal scales to evaluate their performance. Both simulations reproduce well the observed mean conditions and variability over the last years. The subbasin scale analyses of the threedimensional ocean structures and water mass properties reveal seasonal and regional temperature and salinity errors at the surface in both simulations, as well as significant biases at intermediate and deep layers in the Mediterranean Forecasting System. The simulated surface geostrophic velocities are weaker than those derived from altimetry, and circulation biases persist in the Balearic Sea. Additionally, the seasonal existence of the Alboran gyres is not well reproduced in either simulation. The identification of regional simulation biases is essential to advance from global to regional and local scale forecasting, in particular, improving the representation of the local physical processes and their interactions with the subbasin dynamics and the general circulation
Versión del editorhttp://dx.doi.org/10.1016/j.jmarsys.2015.04.010
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