1. Department of Geological Sciences and Bolin Centre for Climate Research; Stockholm University; Stockholm Sweden
2. Centre for Past Climate Studies, Department of Geoscience and Arctic Research Centre; Aarhus University; Aarhus Denmark
3. INSTAAR and Department of Geological Sciences; University of Colorado Boulder; Boulder Colorado USA
4. LOCEAN, Sorbonne Universités; UPMC Univ Paris 06; CNRS, IRD, MNHN Paris, France
5. GEOTOP; Université du Québec à Montréal; Montréal Québec Canada
6. AMS C Dating Centre, Institute of Physics and Astronomy; Aarhus University; Aarhus Denmark
7. Geological Survey of Denmark and Greenland (GEUS); Copenhagen Denmark