Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Section 5.2 – Climate Dynamics and Landscape Evolution, Telegrafenberg, 14473 Potsdam, Germany

now at: University of Turku, Department of Geography and Geology, Section of Geology, 20014 Turku, Finland

Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Section 5.2 – Climate Dynamics and Landscape Evolution, Telegrafenberg, 14473 Potsdam, Germany

Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Section 5.2 – Climate Dynamics and Landscape Evolution, Telegrafenberg, 14473 Potsdam, Germany

University of Cologne, Institute of Geology and Mineralogy, Zülpicher Straße 49A, 50674 Köln, Germany

University of Cologne, Institute of Geology and Mineralogy, Zülpicher Straße 49A, 50674 Köln, Germany

Umeå University, Climate Impacts Research Centre (CIRC), 981 07 Abisko, Sweden

University of Cologne, Institute of Geology and Mineralogy, Zülpicher Straße 49A, 50674 Köln, Germany

now at: Institute of Geological Sciences, University of Bern, Baltzerstraße 1+3, Bern, Switzerland

University of Cologne, Institute of Geology and Mineralogy, Zülpicher Straße 49A, 50674 Köln, Germany

University of Cologne, Institute of Geology and Mineralogy, Zülpicher Straße 49A, 50674 Köln, Germany

now at: Umeå University, Ecology and Environmental Sciences, 981 07 Abisko, Sweden

University of Cologne, Institute of Geology and Mineralogy, Zülpicher Straße 49A, 50674 Köln, Germany

NEISRI, Russian Academy of Science, Magadan, 685000, Russia