Ryan Mole¹, Wilken-Jon von Appen¹, Hauke Becker¹, Torsten Kanzow^1,2, Alexander Haumann^3,4, Jasmin Stimpfle¹, Andrés Piñango⁵, Scarlett Trimborn⁶ and Emma F Young⁷, (1)Alfred Wegener Institute, Helmholtz-Centre for Polar and Marine Research, Bremerhaven, Germany, (2)University of Bremen, Bremen, Germany, (3)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (4)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research, Bremerhaven, Germany, (5)Laboratório de Estudo do Oceano e do Clima, Instituto de Oceanografia, Universidade Federal do Rio Grande, Rio Grande, Brazil, (6)Alfred Wegener Institute, Helmholtz-Centre for Polar and Marine Research, Ecological Chemistry, Bremerhaven, Germany, (7)British Antarctic Survey, Cambridge, United Kingdom