1 Interdisciplinary Laboratory for Continental Environments, University of Lorraine, Campus Bridoux, Bât. IBISE, 8 rue du Général Delestraint, 57070, Metz, France.
2 Department of Archaeometry, Norwegian University of Science and Technology, 7491, Trondheim, Norway.
3 Institute for Ecosystem Research, University of Kiel, Olshausenstrasse 75, 24118, Kiel, Germany.
4 Baden-Wuerttemberg State Office for Cultural Heritage - Tree-ring Lab, Fischersteig 9, 78343, Hemmenhofen, Germany.