Louise Delaigue, Sorbonne Université, CNRS, Laboratoire d'Océanographie de Villefranche (LOV), Villefranche-sur-Mer, France, Raphaelle Sauzede, Sorbonne Université, CNRS, Institut de la Mer de Villefranche (IMEV), Villefranche-Sur-Mer, France, Villefranche-sur-mer, France, Olivier Sulpis, Aix Marseille Université, CNRS, IRD, INRAE, CEREGE, Aix en Provence, France, Philip W Boyd, Institute for Marine and Antarctic Sciences, University of Tasmania, Hobart, TAS, Australia, Herve Claustre, Sorbonne Université, CNRS, Laboratoire d’Océanographie de Villefranche (LOV), Villefranche-sur-mer, France, Gert-Jan Reichart, NIOZ, Royal Netherlands Institute for Sea Research, Department of Ocean Systems, and Utrecht University, Fac Geosci, Dept Earth Sci, Texel, Netherlands and Dr. Matthew Paul Humphreys, PhD, NIOZ Royal Netherlands Institute for Sea Research, Department of Ocean Systems, Texel, Netherlands