FN Archimer Export Format
PT J
TI Early deglacial CO2 release from the Sub-Antarctic Atlantic and Pacific oceans
BT 
AF Shuttleworth, R.
   Bostock, H.C.
   Chalk, T.B.
   Calvo, E.
   Jaccard, S.L.
   Pelejero, C.
   Martínez-García, A.
   Foster, G.L.
AS 1:1;2:2,3;3:1,4;4:5,6;5:;6:4,7;7:8;8:1;
FF 1:;2:;3:;4:;5:;6:;7:;8:;
C1 School of Ocean and Earth Science, University of Southampton, National Oceanography Centre Southampton, Waterfront Campus, European Way, Southampton, SO14 3ZH, United Kingdom
   School of Earth and Environmental Science, University of Queensland, Brisbane, Queensland, Australia
   National Institute of Water and Atmosphere, Wellington, New Zealand
   Institut de Ciències del Mar, ICM-CSIC, Barcelona, Catalonia, Spain
   Institute of Geological Sciences and Oeschger Center for Climate Change Research, University of Bern, 3012 Bern, Switzerland
   Institute of Earth Sciences, University of Lausanne, 1015 Lausanne, Switzerland
   Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Catalonia, Spain
   Max-Planck-Institut für Chemie, (Otto-Hahn-Institut), Hahn-Meitner-Weg 1, 55128 Mainz, Germany
C2 UNIV SOUTHAMPTON, UK
   UNIV QUEENSLAND, AUSTRALIA
   NIWA, NEW ZEALAND
   ICM CSIC, SPAIN
   UNIV BERN, SWITZERLAND
   UNIV LAUSANNE, SWITZERLAND
   ICREA, SPAIN
   MAX PLANCK INST CHEM, GERMANY
IF 5.785
TC 11
UR https://archimer.ifremer.fr/doc/00659/77064/102732.pdf
LA English
DT Article
CR IMAGES 3-IPHIS-MD106
   MD 122 / WEPAMA
   VT 90 / SOUC
BO Marion Dufresne
DE ;deglaciation;Heinrich Stadial 1;CO2 flux;boron isotopes;Southern Ocean;Sub-Antarctic
AB Over the last deglaciation there were two transient intervals of pronounced atmospheric CO2 rise; Heinrich Stadial 1 (17.5-15 kyr) and the Younger Dryas (12.9-11.5 kyr). Leading hypotheses accounting for the increased accumulation of CO2 in the atmosphere at these times invoke deep ocean carbon being released from the Southern Ocean and an associated decline in the global efficiency of the biological carbon pump. Here we present new deglacial surface seawater pH and CO2sw records from the Sub-Antarctic regions of the Atlantic and Pacific oceans using boron isotopes measured on the planktic foraminifera Globigerina bulloides. These new data support the hypothesis that upwelling of carbon-rich water in the Sub-Antarctic occurred during Heinrich Stadial 1, and contributed to the initial increase in atmospheric CO2. The increase in CO2sw is coeval with a decline in biological productivity at both the Sub-Antarctic Atlantic and Pacific sites. However, there is no evidence for a significant outgassing of deep ocean carbon from the Sub-Antarctic during the rest of the deglacial, including the second period of atmospheric CO2 rise coeval with the Younger Dryas. This suggests that the second rapid increase in atmospheric CO2 is driven by processes operating elsewhere in the Southern Ocean, or another region. 
PY 2021
PD JAN
SO Earth And Planetary Science Letters
SN 0012-821X
PU Elsevier BV
VL 554
UT 000604582500008
DI 10.1016/j.epsl.2020.116649
ID 77064
ER

EF