FN Archimer Export Format
PT J
TI Projected reversal of oceanic stable carbon isotope ratio depth gradient with continued anthropogenic carbon emissions
BT 
AF KWON, Eun Young
   TIMMERMANN, Axel
   TIPPLE, Brett J.
   SCHMITTNER, Andreas
AS 1:1,2;2:1,2;3:3;4:4;
FF 1:;2:;3:;4:;
C1 Center for Climate Physics, Institute for Basic Science, Busan, 46241, South Korea
   Pusan National University, Busan, 46241, South Korea
   School of Biological Sciences, University of Utah, Salt Lake City, UT, 84112, USA
   College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, 97331-5503, USA
C2 INST BASIC SCI, SOUTH KOREA
   UNIV PUSAN NATL, SOUTH KOREA
   UNIV UTAH, USA
   UNIV OREGON STATE, USA
IN DOAJ
IF 7.9
TC 2
UR https://archimer.ifremer.fr/doc/00775/88662/94355.pdf
   https://archimer.ifremer.fr/doc/00775/88662/94356.pdf
   https://archimer.ifremer.fr/doc/00775/88662/94357.pdf
LA English
DT Article
CR OISO - OCÉAN INDIEN SERVICE D'OBSERVATION
AB Uptake of 13C-depleted anthropogenic carbon dioxide in the surface ocean may eliminate or reverse the natural vertical gradient in the isotopic composition of dissolved inorganic carbon in the ocean, analogous to events at the Paleocene-Eocene Thermal Maximum, suggest ocean model simulations. Paleoceanographic records suggest that the present-day vertical gradient in the stable carbon isotopic composition (delta C-13) of dissolved inorganic carbon in the ocean was reversed during the Paleocene-Eocene Thermal Maximum, an early period of relatively rapid release of carbon into the climate system. Here we present simulations from an observationally constrained ocean model under various greenhouse gas emissions scenarios. We project a decrease in the globally averaged delta C-13 of dissolved inorganic carbon in the surface ocean of between -1.8 to -6.3 parts per thousand by 2100. This reduction is driven by oceanic absorption of anthropogenic carbon dioxide, which is depleted in carbon-13. Our findings suggest an elimination or reversal of the natural vertical gradient in the delta C-13 of dissolved inorganic carbon by 2100 unless anthropogenic carbon emissions are reduced soon. We conclude that the Paleocene-Eocene Thermal Maximum is a geologic analogue of future global carbon cycle perturbations under continued rapid anthropogenic carbon emissions. 
PY 2022
PD MAR
SO Communications Earth & Environment
SN 2662-4435
PU Springernature
VL 3
IS 1
UT 000769450300002
DI 10.1038/s43247-022-00388-8
ID 88662
ER

EF