TY - JOUR
T1 - Ocean lead at the termination of the Younger Dryas cold spell
AU - Pearce, Christof
AU - Seidenkrantz, Marit-Solveig
AU - Kuijpers, Antoon
AU - Massé, Guillaume
AU - Reynisson, Njáll F.
AU - Kristiansen, Søren M.
PY - 2013/4/9
Y1 - 2013/4/9
N2 - The Younger Dryas (YD) cold interval is one of the most abrupt climate events of Earth's recent history. The origin of this rapid, severe cooling episode is still widely debated, but it was probably triggered by a large freshwater influx to the North Atlantic resulting in disruption of the Atlantic Meridional Overturning Circulation. The YD termination, despite having been even more abrupt than the onset has, however, received significantly less attention. Here using multi-proxy data from a high-resolution marine sediment record, we present evidence for a gradual decrease of the Labrador Current influence, northward migration of the Gulf Stream oceanic front and a rapid decline of sea-ice cover at the YD termination. Our data indicate a stepwise sequence of events with changes in ocean circulation clearly preceding those in atmospheric conditions, in contrast to the hitherto commonly assumed single-event rapid climatic shift at the YD-Holocene transition.
AB - The Younger Dryas (YD) cold interval is one of the most abrupt climate events of Earth's recent history. The origin of this rapid, severe cooling episode is still widely debated, but it was probably triggered by a large freshwater influx to the North Atlantic resulting in disruption of the Atlantic Meridional Overturning Circulation. The YD termination, despite having been even more abrupt than the onset has, however, received significantly less attention. Here using multi-proxy data from a high-resolution marine sediment record, we present evidence for a gradual decrease of the Labrador Current influence, northward migration of the Gulf Stream oceanic front and a rapid decline of sea-ice cover at the YD termination. Our data indicate a stepwise sequence of events with changes in ocean circulation clearly preceding those in atmospheric conditions, in contrast to the hitherto commonly assumed single-event rapid climatic shift at the YD-Holocene transition.
UR - http://www.scopus.com/inward/record.url?scp=84877776831&partnerID=8YFLogxK
U2 - 10.1038/ncomms2686
DO - 10.1038/ncomms2686
M3 - Article
VL - 4
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
M1 - 1664
ER -