FN Archimer Export Format
PT J
TI Last deglacial abrupt climate changes caused by meltwater pulses in the Labrador Sea
BT 
AF You, Defang
   Stein, Ruediger
   Fahl, Kirsten
   Williams, Maricel C.
   Schmidt, Daniela N.
   McCave, Ian Nicholas
   Barker, Stephen
   Schefuß, Enno
   Niu, Lu
   Kuhn, Gerhard
   Niessen, Frank
AS 1:1;2:1,2,3;3:1;4:4;5:4;6:5;7:6;8:2;9:1;10:1;11:1;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;
C1 Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, 27568, Germany
   MARUM-Center for Marine Environmental Sciences and Faculty of Geosciences, University of Bremen, Bremen, 28359, Germany
   Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ocean University of China, Qingdao, 266100, China
   School of Earth Sciences, University of Bristol, Bristol, BS8 1RJ, UK
   Godwin Laboratory for Palaeoclimate Research, Department of Earth Sciences, University of Cambridge, Cambridge, CB2 3EQ, UK
   School of Earth and Environmental Sciences, Cardiff University, Cardiff, CF10 3AT, UK
C2 INST A WEGENER, GERMANY
   UNIV BREMEN MARUM, GERMANY
   UNIV OCEAN CHINA, CHINA
   UNIV BRISTOL, UK
   UNIV CAMBRIDGE, UK
   UNIV CARDIFF, UK
IN DOAJ
IF 7.9
TC 4
UR https://archimer.ifremer.fr/doc/00828/94007/100852.pdf
   https://archimer.ifremer.fr/doc/00828/94007/100853.pdf
   https://archimer.ifremer.fr/doc/00828/94007/100854.pdf
LA English
DT Article
CR MD 114 / IMAGES V GINNA
BO Marion Dufresne
AB Freshwater perturbations are often thought to be associated with abrupt climate changes during the last deglaciation, while many uncertainties remain regarding the exact timing, pathway, mechanism, and influence of meltwater release. Here, we present very well-dated and high-resolution records from the eastern Labrador Sea representing the last 19.000 years, which demonstrate abrupt changes in sea surface characteristics. Four millennial-scale meltwater events have been identified between the last 14.000 and 8.200 years based on independent biomarker proxies and X-ray fluorescence scanning data. These events are characterized by increased sea ice formation and decreased sea surface temperatures which might have occurred within a few decades. We propose these abrupt changes were triggered by meltwater pulsing into the Labrador Sea periodically, resulting from collapse of the Laurentide-Greenland Ice Sheets caused by (sub-)surface ocean warming in the Labrador Sea. Our findings provide more precise information about impact of freshwater forcing on abrupt climate changes, which may help to improve simulations for past and future changes in ocean circulation and climate. 
PY 2023
PD MAR
SO Communications Earth & Environment
SN 2662-4435
PU Springer Science and Business Media LLC
VL 4
IS 1
UT 000952278400004
DI 10.1038/s43247-023-00743-3
ID 94007
ER

EF