Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, affiliation not provided to SSRN, affiliation not provided to SSRN, Stockholm University, University of Copenhagen, Stockholm University, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, University of Melbourne and Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research