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Description détaillée: 
Ce produit est géré par le système de traitement des données altimétriques multimission SL-TAC de CMEMS. Il traite les données de toutes les missions altimétriques : Jason-3, Sentinel-3A, HY-2A, Saral/AltiKa, Cryosat-2, Jason-2, Jason-1, T/P, ENVISAT, GFO, ERS1/2. Il fournit un catalogue cohérent et homogène de produits pour des applications variées, tant pour les applications en temps quasi réel que pour les études en temps différé. Deux résolutions sont proposées (figurent dans le nom du fichier) : *vfec* : pour les données validées, filtrées, sous-échantillonnées et corrigées de LEW et *vxxc* pour les données validées, NON filtrées, NON sous-échantillonnées et corrigées de LEW 

Échantillonnage horizontal de la grille
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