Christoph D Voelker¹, Onur Karakuṣ², Maya Dalby¹, Özgür Gürses³, Cédric Leo Meunier⁴ and Judith Hauck³, (1)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (2)Centre for ice, Cryosphere, Carbon and Climate (iC3) - UiT The Arctic University of Norway, Tromsø, Norway, (3)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research, Bremerhaven, Germany, (4)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research, Shelf Sea System Ecology, Helgoland, Germany