Lea Lange¹, Yuanxu Dong^1,2, Leonie Scheidereit¹, Leon Arneth¹, Josefine Karnatz³, Astrid Klöss¹, Anja Engel¹, Ruben Carrasco⁴, Jochen Horstmann⁴ and Christa A Marandino¹, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Marine Biogeochemistry, Kiel, Germany, (2)University Heidelberg, Institute of Environmental Physics, Heidelberg, Germany, (3)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (4)Helmholtz-Zentrum Hereon, Ocean Surface Dynamics, Geesthacht, Germany