Arne Biastoch^1,2, Franziska U. Schwarzkopf¹, René Schubert¹, Leon-Cornelius Mock¹, Sabrina Speich³, Sebastiaan Swart⁴ and Sarah Fawcett⁵, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (2)University of Kiel, Kiel, Germany, (3)Laboratoire de Météorologie Dynamique – IPSL, Paris, France, (4)University of Gothenburg, Department of Marine Sciences, Gothenburg, Sweden, (5)University of Cape Town, Oceanography Department, Cape Town, South Africa