Krissy Anne Reeve¹, Torsten Kanzow², Volker H Strass³, Olaf Boebel⁴ and Rüdiger Gerdes⁴, (1)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Physical Oceanography of Polar Seas, Bremerhaven, Germany, (2)Alfred-Wegener-Institute, Bremerhaven, Germany, (3)Alfred Wegener Inst, Bremerhaven, Germany, (4)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany