René Schubert¹, Maxime Ballarotta², Regina Kurpiers¹, Arne Biastoch^1,3 and Franziska U. Schwarzkopf¹, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (2)CLS Collecte Localisation Satellites, Ramonville Saint Agne, France, (3)Kiel University, Kiel, Germany