Identification of substantial precession variability in early-Pleistocene glacial cycles supports a continuous Milankovitch-type response to insolation forcing

Peter J Huybers, Harvard University, Department of Earth and Planetary Sciences, Cambridge, MA, United States, Parker Liautaud, Harvard University, Cambridge, MA, United States and David A Hodell, University of Cambridge, Godwin Laboratory for Palaeoclimate Research, Cambridge, United Kingdom