FN Archimer Export Format
PT J
TI Glacial heterogeneity in Southern Ocean carbon storage abated by fast South Indian deglacial carbon release
BT 
AF Gottschalk, Julia
   Michel, Elisabeth
   Thöle, Lena M.
   Studer, Anja S.
   Hasenfratz, Adam P.
   Schmid, Nicole
   Butzin, Martin
   Mazaud, Alain
   Martínez-García, Alfredo
   Szidat, Sönke
   Jaccard, Samuel L.
AS 1:1,2;2:3;3:1,4;4:5,6;5:1,7;6:1;7:8;8:3;9:5;10:9;11:1;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;
C1 Institute of Geological Sciences and Oeschger Center for Climate Change Research, University of Bern, Bern, Switzerland
   Lamont-Doherty Earth Observatory, Columbia University of the City of New York, Palisades, NY, USA
   Laboratoire des Sciences du Climat et de l’Environnement, LSCE/IPSL, CNRS-CEA-UVSQ, Université de Paris-Saclay, Gif-sur-Yvette, France
   Department of Earth Sciences, Marine Palynology and Paleoceanography, Utrecht University, Utrecht, Netherlands
   Max Planck Institute for Chemistry, Climate Geochemistry Department, Mainz, Germany
   Department of Environmental Sciences, University of Basel, Basel, Switzerland
   Geological Institute, Department of Earth Sciences, ETH Zurich, Zurich, Switzerland
   Alfred-Wegener-Institut Helmholtz-Zentrum für Polar-und Meeresforschung, Bremerhaven, Germany
   Department of Chemistry and Biochemistry and Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland
C2 UNIV BERN, SWITZERLAND
   UNIV COLUMBIA, USA
   LSCE, FRANCE
   UNIV UTRECHT, NETHERLANDS
   MAX PLANCK INST CHEM, GERMANY
   UNIV BASEL, SWITZERLAND
   ETH ZURICH, SWITZERLAND
   INST A WEGENER, GERMANY
   UNIV BERN, SWITZERLAND
IN DOAJ
IF 14.919
TC 25
UR https://archimer.ifremer.fr/doc/00662/77418/79081.pdf
   https://archimer.ifremer.fr/doc/00662/77418/79082.pdf
   https://archimer.ifremer.fr/doc/00662/77418/79083.pdf
LA English
DT Article
CR MD 189 / INDIEN SUD 2
BO Marion Dufresne
AB Past changes in ocean 14C disequilibria have been suggested to reflect the Southern Ocean control on global exogenic carbon cycling. Yet, the volumetric extent of the glacial carbon pool and the deglacial mechanisms contributing to release remineralized carbon, particularly from regions with enhanced mixing today, remain insufficiently constrained. Here, we reconstruct the deglacial ventilation history of the South Indian upwelling hotspot near Kerguelen Island, using high-resolution 14C-dating of smaller-than-conventional foraminiferal samples and multi-proxy deep-ocean oxygen estimates. We find marked regional differences in Southern Ocean overturning with distinct South Indian fingerprints on (early de-)glacial atmospheric CO2 change. The dissipation of this heterogeneity commenced 14.6 kyr ago, signaling the onset of modern-like, strong South Indian Ocean upwelling, likely promoted by rejuvenated Atlantic overturning. Our findings highlight the South Indian Ocean’s capacity to influence atmospheric CO2 levels and amplify the impacts of inter-hemispheric climate variability on global carbon cycling within centuries and millennia. 
PY 2020
PD DEC
SO Nature Communications
SN 2041-1723
PU Springer Science and Business Media LLC
VL 11
IS 1
UT 000608522800011
DI 10.1038/s41467-020-20034-1
ID 77418
ER

EF