FN Archimer Export Format
PT J
TI Enhanced ocean-atmosphere carbon partitioning via the carbonate counter pump during the last deglacial
BT 
AF DUCHAMP-ALPHONSE, Stephanie
   SIANI, Giuseppe
   MICHEL, Elisabeth
   BEAUFORT, Luc
   GALLY, Yves
   JACCARD, Samuel L.
AS 1:1,2;2:1,2;3:3;4:4;5:4;6:5,6;
FF 1:;2:;3:;4:;5:;6:;
C1 Univ Paris 11, GEOPS, F-91405 Orsay, France.
   Univ Paris Saclay, CNRS, F-91405 Orsay, France.
   CEA CNRS UVSQ, LSCE, IPSL Lab Sci Climat & Environm, F-91198 Gif Sur Yvette, France.
   Aix Marseille Univ, CNRS, IRD, INRA,Coll France,CEREGE, Aix En Provence, France.
   Univ Bern, Inst Geol Sci, CH-3012 Bern, Switzerland.
   Univ Bern, Oeschger Ctr Climate Change Res, CH-3012 Bern, Switzerland.
C2 UNIV PARIS 11, FRANCE
   UNIV PARIS SACLAY, FRANCE
   LSCE, FRANCE
   UNIV AIX MARSEILLE, FRANCE
   UNIV BERN, SWITZERLAND
   UNIV BERN, SWITZERLAND
IN DOAJ
IF 11.878
TC 21
UR https://archimer.ifremer.fr/doc/00445/55643/57288.pdf
   https://archimer.ifremer.fr/doc/00445/55643/57289.pdf
   https://archimer.ifremer.fr/doc/00445/55643/57290.pdf
LA English
DT Article
CR MD159 / PACHIDERME
BO Marion Dufresne
AB Several synergistic mechanisms were likely involved in the last deglacial atmospheric pCO2 rise. Leading hypotheses invoke a release of deep-ocean carbon through enhanced convection in the Southern Ocean (SO) and concomitant decreased efficiency of the global soft-tissue pump (STP). However, the temporal evolution of both the STP and the carbonate counter pump (CCP) remains unclear, thus preventing the evaluation of their contributions to the pCO2 rise. Here we present sedimentary coccolith records combined with export production reconstructions from the Subantarctic Pacific to document the leverage the SO biological carbon pump (BCP) has imposed on deglacial pCO2. Our data suggest a weakening of BCP during the phases of carbon outgassing, due in part to an increased CCP along with higher surface ocean fertility and elevated [CO2aq]. We propose that reduced BCP efficiency combined with enhanced SO ventilation played a major role in propelling the Earth out of the last ice age. 
PY 2018
PD JUL
SO Nature Communications
SN 2041-1723
PU Nature Publishing Group
VL 9
IS 1
UT 000435538500014
DI 10.1038/s41467-018-04625-7
ID 55643
ER

EF