FN Archimer Export Format PT J TI Lower oceanic δ13C during the last interglacial period compared to the Holocene BT AF Bengtson, Shannon A. Menviel, Laurie C. Meissner, Katrin J. Missiaen, Lise Peterson, Carlye D. Lisiecki, Lorraine E. Joos, Fortunat AS 1:1,2;2:1;3:1,2;4:1;5:3;6:4;7:5,6; FF 1:;2:;3:;4:;5:;6:;7:; C1 Climate Change Research Centre, The University of New South Wales, Sydney, Australia The Australian Research Council Centre of Excellence for Climate Extremes, Sydney, Australia Earth Sciences, University of California, Riverside, California, USA Department of Earth Science, University of California, Santa Barbara, California, USA Climate and Environmental Physics, Physics Institute, University of Bern, Bern, Switzerland Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland C2 UNIV NEW SOUTH WALES, AUSTRALIA CLEX ARC, AUSTRALIA UNIV CALIF RIVERSIDE, USA UNIV CALIF SANTA BARBARA, USA UNIV BERN, SWITZERLAND UNIV BERN, SWITZERLAND IN DOAJ IF 4.498 TC 3 UR https://archimer.ifremer.fr/doc/00682/79397/81928.pdf https://archimer.ifremer.fr/doc/00682/79397/81930.pdf https://archimer.ifremer.fr/doc/00682/79397/81932.pdf https://archimer.ifremer.fr/doc/00682/79397/81935.zip LA English DT Article CR IMAGES 1-MD101 IMAGES 3-IPHIS-MD106 IMAGES V LEG 1-MD114 IMAGES V LEG 4-MD114 IMAGES V LEG 5 MD 122 / WEPAMA MD 123 / GEOSCIENCES 1 MD 132 / P.I.C.A.S.S.O.-IMAGES11 MD 153 / AUSFAIR NAUSICAA-IMAGES 2-MD105 VT 90 / SOUC BO Marion Dufresne AB The last time in Earth's history when high latitudes were warmer than during pre-industrial times was the last interglacial period (LIG, 129–116 ka BP). Since the LIG is the most recent and best documented interglacial, it can provide insights into climate processes in a warmer world. However, some key features of the LIG are not well constrained, notably the oceanic circulation and the global carbon cycle. Here, we use a new database of LIG benthic δ13C to investigate these two aspects. We find that the oceanic mean δ13C was  ∼  0.2 ‰ lower during the LIG (here defined as 125–120 ka BP) when compared to the Holocene (7–2 ka BP). A lower terrestrial carbon content at the LIG than during the Holocene could have led to both lower oceanic δ13C and atmospheric δ13CO2 as observed in paleo-records. However, given the multi-millennial timescale, the lower oceanic δ13C most likely reflects a long-term imbalance between weathering and burial of carbon. The δ13C distribution in the Atlantic Ocean suggests no significant difference in the latitudinal and depth extent of North Atlantic Deep Water (NADW) between the LIG and the Holocene. Furthermore, the data suggest that the multi-millennial mean NADW transport was similar between these two time periods. PY 2021 PD FEB SO Climate Of The Past SN 1814-9324 PU Copernicus GmbH VL 17 IS 1 UT 000626268100001 BP 507 EP 528 DI 10.5194/cp-17-507-2021 ID 79397 ER EF