Michael N Evans, Univ Maryland, College Park, MD, United States, Nerilie Abram, The Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia, Oliver Bothe, Helmholtz-Zentrum Geesthacht Centre for Materials and Coastal Research, Geesthacht, Germany, Bronwen L Konecky, Washington University in St Louis, Earth and Planetary Sciences, St. Louis, MO, United States, Hans W Linderholm, University of Gothenburg, Earth Sciences, Gothenburg, Sweden, Belen Martrat, Institute of Environmental Assessment and Water Research (IDAEA), Department of Environmental Chemistry, Barcelona, Spain, Helen V Mcgregor, University of Wollongong, Earth, Atmospheric and Life Sciences, Wollongong, Australia, Raphael Neukom, Institut Pierre Simon Laplace, Paris, France, Steven J Phipps, Climate Change Research Centre, UNSW Sydney, Australia, Scott St George, Univ of MN-Dept of Geography, Minneapolis, MN, United States and Sarah Eggleston, University of Bern, Bern, Switzerland; Past Global Changes, International Project Office, Bern, Switzerland