Ruza F Ivanovic, University of Leeds, School of Earth and Environment, Leeds, LS2, United Kingdom, Lauren J Gregoire, University of Bristol, Bristol, United Kingdom, Andrew D Wickert, University of Minnesota, Department of Earth & Environmental Sciences and Saint Anthony Falls Laboratory, Minneapolis, MN, United States, Paul J Valdes, University of Bristol, Bristol, BS8, United Kingdom, Ilkka Matero, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany and Andrea Burke, University of St. Andrews, School of Earth and Environmental Sciences, St. Andrews, United Kingdom