title: Radiocarbon variability in the western North Atlantic during the last deglaciation.
abstract: We present a detailed history of glacial to Holocene radiocarbon in the deep western North Atlantic from deep-sea corals and paired benthic-planktonic foraminifera. The deglaciation is marked by switches between radiocarbon-enriched and -depleted waters, leading to large radiocarbon gradients in the water column. These changes played an important role in modulating atmospheric radiocarbon. The deep-ocean record supports the notion of a bipolar seesaw with increased Northern-source deep-water formation linked to Northern Hemisphere warming and the reverse. In contrast, the more frequent radiocarbon variations in the intermediate/deep ocean are associated with roughly synchronous changes at the poles.
authors.affiliation: California Institute of Technology, MS 100-23, 1200 East California Boulevard, Pasadena, CA 91125, USA. laurar@gps.caltech.edu
authors.forename: Laura F
authors.initials: LF
authors.lastname: Robinson
authors.forename: Jess F
authors.initials: JF
authors.lastname: Adkins
authors.forename: Lloyd D
authors.initials: LD
authors.lastname: Keigwin
authors.forename: John
authors.initials: J
authors.lastname: Southon
authors.forename: Diego P
authors.initials: DP
authors.lastname: Fernandez
authors.forename: S-L
authors.initials: SL
authors.lastname: Wang
authors.forename: Daniel S
authors.initials: DS
authors.lastname: Scheirer
mesh_terms: D000818:Animals; D037421:Anthozoa; D001267:Atlantic Ocean; D002247:Carbon Isotopes; D002250:Carbon Radioisotopes; D002980:Climate; D056890:Eukaryota; D046448:Ice Cover; D013995:Time; D015048:Zooplankton
chemical_list: D002247:Carbon Isotopes; D002250:Carbon Radioisotopes