Towards a North Atlantic Plio-Pliestocene sediment color climate index

Stephen Obrochta, Akita University, Graduate School of International Resource Science, Akita, Japan, Ian Bailey, University of Exeter, Camborne School of Mines, Penryn, United Kingdom, James E T Channell, University of Florida, Ft Walton Beach, FL, United States, David A Hodell, University of Cambridge, Godwin Laboratory for Palaeoclimate Research, Cambridge, United Kingdom, Axel Timmermann, IPRC, University of Hawaii at Manoa, Honolulu, HI, United States, Jonathan James Tyler, University of Adelaide, Adelaide, SA, Australia, Chuang Xuan, University of Southampton, Ocean and Earth Science, Southampton, United Kingdom and Yusuke Yokoyama, The University of Tokyo, Atmosphere and Ocean Research Institute (AORI), Kashiwa, Japan