FN Archimer Export Format
PT J
TI The North Atlantic Glacial Eastern Boundary Current as a key driver for ice‐sheet – AMOC interactions and climate instability
BT 
AF Toucanne, Samuel
   Soulet, Guillaume
   VAZQUEZ RIVEIROS, Natalia
   Boswell, Steven M.
   Dennielou, Bernard
   Waelbroeck, Claire
   Bayon, Germain
   Mojtahid, Meryem
   Bosq, Mathieu
   Sabine, Marjolaine
   Zaragosi, Sébastien
   Bourillet, Jean-Francois
   Mercier, Herle
AS 1:1;2:1;3:1;4:2;5:1;6:3;7:1;8:4;9:5;10:6;11:6;12:1;13:7;
FF 1:PDG-REM-GM-LGS;2:PDG-REM-GM-LGS;3:PDG-REM-GM-LGS;4:;5:PDG-REM-GM-LGS;6:;7:PDG-REM-GM-LGS;8:;9:;10:;11:;12:PDG-REM;13:;
C1 IFREMER Unité de Recherche Géosciences Marines Laboratoire Géophysique et enregistrement Sédimentaire CS10070F‐29280 Plouzané ,France
   Lamont‐Doherty Earth Observatory Columbia University Palisades New York10964 ,United States
   Laboratoire d’Océanographie et du Climat : Expérimentation et Approches Numériques LOCEAN/IPSL Sorbonne Université‐CNRS‐IRD‐MNHN UMR7159, Paris, France
   LPG‐BIAF UMR‐CNRS 6112 Université d’Angers UFR Sciences 2 bd Lavoisier49045 Angers Cedex 01 ,France
   PACEA UMR 5199 CNRS ‐ Université Bordeaux Bâtiment B8allée Geoffroy Saint Hilaire33615 Pessac ,France
   UMR‐CNRS 5805 EPOC ‐ OASU Université de Bordeaux CS5002333615 Pessac, France
   CNRS IFREMER Université de Brest IRD Laboratoire d’Océanographie Physique et Spatiale (LOPS) Centre IFREMER de Bretagne CS10070F‐29280 Plouzané,France
C2 IFREMER, FRANCE
   UNIV COLUMBIA, USA
   UNIV SORBONNE, FRANCE
   UNIV ANGERS, FRANCE
   UNIV BORDEAUX, FRANCE
   UNIV BORDEAUX, FRANCE
   CNRS, FRANCE
SI BREST
SE PDG-REM-GM-LGS
   PDG-REM
UM LOPS
IN WOS Ifremer UPR
   WOS Cotutelle UMR
   copubli-france
   copubli-univ-france
   copubli-int-hors-europe
IF 3.992
TC 19
UR https://archimer.ifremer.fr/doc/00683/79488/82080.pdf
   https://archimer.ifremer.fr/doc/00683/79488/82081.docx
   https://archimer.ifremer.fr/doc/00683/79488/82082.xlsx
   https://archimer.ifremer.fr/doc/00683/79488/82083.xlsx
   https://archimer.ifremer.fr/doc/00683/79488/82084.xlsx
LA English
DT Article
CR BOBGEO
   CABTEX
   GITAN
   IMAGES V LEG 1-MD114
   IMAGES V LEG 4-MD114
   IMAGES V LEG 5
   MD 132 / P.I.C.A.S.S.O.-IMAGES11
   MD 142 / ALIENOR 2
BO Pourquoi pas ?
   Marion Dufresne
DE ;AMOC;climate changes;Dansgaard‐Oeschger events;Glacial Eastern Boundary Current;last glacial period
AB The upper branch of the Atlantic Meridional Overturning Circulation (AMOC) plays a critical role in ocean circulation and climate change, yet its variability during the last glacial period is poorly documented. Here, we investigate the northward‐flowing Glacial Eastern Boundary Current (GEBC) in the North Atlantic, known today as the European Slope Current, and representing the easternmost portion of the upper branch of the AMOC. Based on flow speed and isotopic records, we show that Dansgaard‐Oeschger (D/O) interstadials (stadials) correspond to a faster (weaker) GEBC during the ∼50‐15 ka period. This, by analogy to present‐day conditions, suggests enhanced (reduced) strength of the subpolar gyre and, by extension, of northern‐sourced water production and AMOC during D‐O interstadials (stadials). Concomitant fluctuations of both the GEBC and the European Ice Sheet between ∼30 and 17 ka suggest an active role of the upper branch of AMOC in the poleward transport of heat and freshwater to the northern North Atlantic, with direct impacts on deep water formation and AMOC strength. We explore these ice‐sheet ‐ AMOC interactions and the associated abrupt climate changes over the last glacial period and the last deglaciation. 
PY 2021
PD MAR
SO Paleoceanography And Paleoclimatology
SN 2572-4517
PU American Geophysical Union (AGU)
VL 36
IS 3
UT 000635265600011
DI 10.1029/2020PA004068
ID 79488
ER

EF