TY - JOUR AB - Reconstructing the dynamic response of the Antarctic ice sheets to warming during the Last Glacial Termination (LGT; 18,000-11,650 yrs ago) allows us to disentangle ice-climate feedbacks that are key to improving future projections. Whilst the sequence of events during this period is reasonably well-known, relatively poor chronological control has precluded precise alignment of ice, atmospheric and marine records, making it difficult to assess relationships between Antarctic ice-sheet (AIS) dynamics, climate change and sea level. Here we present results from a highly-resolved 'horizontal ice core' from the Weddell Sea Embayment, which records millennial-scale AIS dynamics across this extensive region. Counterintuitively, we find AIS mass-loss across the full duration of the Antarctic Cold Reversal (ACR; 14,600-12,700 yrs ago), with stabilisation during the subsequent millennia of atmospheric warming. Earth-system and ice-sheet modelling suggests these contrasting trends were likely Antarctic-wide, sustained by feedbacks amplified by the delivery of Circumpolar Deep Water onto the continental shelf. Given the anti-phase relationship between inter-hemispheric climate trends across the LGT our findings demonstrate that Southern Ocean-AIS feedbacks were controlled by global atmospheric teleconnections. With increasing stratification of the Southern Ocean and intensification of mid-latitude westerly winds today, such teleconnections could amplify AIS mass loss and accelerate global sea-level rise. AU - Fogwill, CJ AU - Turney, CSM AU - Golledge, NR AU - Etheridge, DM AU - Rubino, M AU - Thornton, DP AU - Baker, A AU - Woodward, J AU - Winter, K AU - van Ommen, TD AU - Moy, AD AU - Curran, MAJ AU - Davies, SM AU - Weber, ME AU - Bird, MI AU - Munksgaard, NC AU - Menviel, L AU - Rootes, CM AU - Ellis, B AU - Millman, H AU - Vohra, J AU - Rivera, A AU - Cooper, A DA - 2017/01/05 DO - 10.1038/srep39979 JO - Sci Rep PB - NATURE PORTFOLIO PY - 2017/01/05 SP - 39979 TI - Antarctic ice sheet discharge driven by atmosphere-ocean feedbacks at the Last Glacial Termination. VL - 7 Y1 - 2017/01/05 Y2 - 2024/03/28 ER -