FN Archimer Export Format
PT J
TI Rapid reductions and millennial-scale variability in Nordic Seas sea ice cover during abrupt glacial climate changes
BT 
AF Sadatzki, Henrik
   Maffezzoli, Niccolò
   Dokken, Trond M.
   Simon, Margit H
   Berben, Sarah M. P.
   Fahl, Kirsten
   Kjær, Helle A.
   Spolaor, Andrea
   Stein, Ruediger
   Vallelonga, Paul
   Vinther, Bo M.
   Jansen, Eystein
AS 1:1,2,3;2:4,5,6;3:2,7;4:2,7;5:1,2;6:3;7:4;8:5,6;9:3,8;10:4,9;11:4;12:1,2,7;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;
C1 Department of Earth Science, University of Bergen, 5007 Bergen, Norway
   Bjerknes Centre for Climate Research, 5007 Bergen, Norway
   Marine Geology Section, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, 27568 Bremerhaven, Germany
   Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen, Denmark
   Department of Environmental Sciences, Informatics and Statistics, Ca’ Foscari University of Venice, 30170 Venice Mestre, Italy
   Institute of Polar Science–National Research Council of Italy, (I) 30172 Venezia-Mestre (VE), Italy
   Climate, Norwegian Research Centre AS (NORCE), 5007 Bergen, Norway
   MARUM Center for Marine Environmental Sciences and Faculty of Geosciences, University of Bremen, 28334 Bremen, Germany
   Oceans Institute, The University of Western Australia, Crawley, WA 6009, Australia
C2 UNIV BERGEN, NORWAY
   BCCR, NORWAY
   INST A WEGENER, GERMANY
   UNIV COPENHAGEN, DENMARK
   UNIV VENICE, ITALY
   CNR, ITALY
   NORCE, NORWAY
   UNIV BREMEN MARUM, GERMANY
   UNIV WESTERN AUSTRALIA, AUSTRALIA
IF 11.205
TC 11
UR https://archimer.ifremer.fr/doc/00659/77066/78374.pdf
   https://archimer.ifremer.fr/doc/00659/77066/78375.pdf
   https://archimer.ifremer.fr/doc/00659/77066/78376.xlsx
   https://archimer.ifremer.fr/doc/00659/77066/78377.xlsx
   https://archimer.ifremer.fr/doc/00659/77066/78378.xlsx
   https://archimer.ifremer.fr/doc/00659/77066/78379.xlsx
   https://archimer.ifremer.fr/doc/00659/77066/78380.xlsx
   https://archimer.ifremer.fr/doc/00659/77066/78381.xlsx
   https://archimer.ifremer.fr/doc/00659/77066/78382.xlsx
LA English
DT Article
CR IMAGES 1-MD101
   IMAGES V LEG 1-MD114
   IMAGES V LEG 4-MD114
BO Marion Dufresne
DE ;sea ice;Nordic Seas;Dansgaard-Oeschger events;abrupt climate change
AB Constraining the past sea ice variability in the Nordic Seas is critical for a comprehensive understanding of the abrupt Dansgaard-Oeschger (D-O) climate changes during the last glacial. Here we present unprecedentedly detailed sea ice proxy evidence from two Norwegian Sea sediment cores and an East Greenland ice core to resolve and constrain sea ice variations during four D-O events between 32 and 41 ka. Our independent sea ice records consistently reveal a millennial-scale variability and threshold response between an extensive seasonal sea ice cover in the Nordic Seas during cold stadials and reduced seasonal sea ice conditions during warmer interstadials. They document substantial and rapid sea ice reductions that may have happened within 250 y or less, concomitant with reinvigoration of deep convection in the Nordic Seas and the abrupt warming transitions in Greenland. Our empirical evidence thus underpins the cardinal role of rapid sea ice decline and related feedbacks to trigger abrupt and large-amplitude climate change of the glacial D-O events. 
PY 2020
PD NOV
SO Proceedings Of The National Academy Of Sciences Of The United States Of America
SN 0027-8424
PU Proceedings of the National Academy of Sciences
VL 117
IS 47
UT 000593967200010
BP 29478
EP 29486
DI 10.1073/pnas.2005849117
ID 77066
ER

EF