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How is the surface Atlantic water inflow through the Gibraltar Strait forecasted? A lagrangian validation of operational oceanographic services in the Alboran Sea and the Western Mediterranean

AuthorsSotillo, Marcos G.; Amo-Baladrón, A.; García-Ladona, Emilio ; Orfila, Alejandro ; Rodríguez-Rubio, Pablo; Conti, Daniel ; Jiménez Madrid, J. A. ; de los Santos, F.J.; Álvarez-Fanjul, Enrique
Issue DateJul-2016
PublisherUniversidad de Alicante
CitationLibro de Resúmenes. IV Encuentro Oceanografía Física Española: 135-136 (2016)
AbstractAn exhaustive validation of operational ocean forecast products available in the Gibraltar Strait and the Alboran Sea is presented. The skill of two ocean model solutions (i.e. the regional CMEMS IBI and the local PdE SAMPA ones) in reproducing the complex surface dynamics in the above areas is evaluated. To this aim, in-situ measurements from 35 drifter buoys (the MEDESS-GIB database) are used as observational reference. A Lagrangian separation distance and a skill score have been applied to evaluate the performance of the modeling systems in reproducing the observed trajectories. Furthermore, the SST validation with in-situ data is carried out by means of validating the model solutions with L3 satellite SST products. The IBI products are evaluated in an extended domain, beyond the Alboran Sea, covering western Mediterranean waters. This analysis reveals some strengths of the regional solution (i.e. realistic values of the Atlantic Jet in the Strait, realistic simulation of the Algerian Current), together with some shortcomings (the major one related to the simulated geographical position and intensity of the Alboran Gyres, particularly the western one). On the other hand, the SAMPA system shows a more accurate model performance and it realistically reproduces the observed surface circulation in the area. The results reflect the effectiveness of the dynamical downscaling performed through the SAMPA system with respect to the regional IBI solution (in which SAMPA is nested), providing an objective measure of the potential added values introduced by the SAMPA downscaling solution in the Alboran Sea
DescriptionIV Encuentro Oceanografía Física Española, celebrado del 20 al 22 de julio de 2016 en Alicante,España.-- 2 pages, 7 figures
Publisher version (URL)http://rua.ua.es/dspace/handle/10045/59211
Identifiersisbn: 978-84-16724-17-8
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