Steffen Swoboda¹, Arjun Chennu², Hannah Marchant², Soeren Ahmerkamp², Kai Schwalfenberg³, Jan-Hendrik Hehemann⁴, Hagen Buck-Wiese⁵ and Morten H. Iversen⁶, (1)MARUM Center for Marine Environmental Sciences, Bremen, Germany, (2)Max Planck Institute for Marine Microbiology, Bremen, Germany, (3)University of Oldenburg, Marine Sensor Systems Group, Institute for Chemistry and Biology of the Marine Environment, Oldenburg, Germany, (4)Max Planck Institute for Marine Microbiology and MARUM Center for Marine Environmental Sciences, Bremen, Germany, (5)Max Planck Insitute for Extraterrestrial Physics, Garching, Germany, (6)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany