Note: Funding Information: I.S. acknowledges funding by the Helmholtz Climate Initiative REKLIM (Regional Climate Change), a joint research project of the Helmholtz Association of German Research Centres (HGF) and support from the Open Access Publication Funds of Alfred-Wegener-Institut Helmholtz-Zentrum für Polar-und Meeresforschung. B.W. was funded by NWO VIDI grant 016.Vidi.171.063. Funding Information: I.S. acknowledges funding by the Helmholtz Climate Initiative REKLIM (Regional Climate Change), a joint research project of the Helmholtz Association of German Research Centres (HGF) and support from the Open Access Publication Funds of Alfred-Wegener-Institut HelmholtzZentrum für Polar-und Meeresforschung. B.W. was funded by NWO VIDI grant 016.Vidi.171.063.