1. Institute for Biogeochemistry and Marine Chemistry, KlimaCampus; Universität Hamburg; Hamburg Germany
2. Department of Earth Sciences; University of Southern California; Los Angeles California USA
3. Department of Earth Sciences; University of Oxford; Oxford UK
4. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI); Bremerhaven Germany
5. UMR CNRS 6539, Institut Universitaire Européen de la Mer; Université de Bretagne Occidentale, Technôpole Brest-Iroise; Place Nicholas Copernic Plouzané France
6. Ecohydrology Research Group, Department of Earth and Environmental Sciences; University of Waterloo; Waterloo Ontario Canada
7. Institute of Geography, KlimaCampus; Universität Hamburg; Hamburg Germany