Last Glacial Maximum sea surface temperature and sea-ice extent in the Pacific sector of the Southern Ocean

TL;DR: Measurements of neodymium isotopes show that the deepwater column of the glacial southern South Pacific was stratified, just as would be necessary for the accumulation of old, carbon-rich water, and highlights the important role of abyssal waters in sustaining a deep glacial carbon reservoir and Southern Hemisphere climate change as a prerequisite for the destabilization of the water column and hence the deglacial release of sequestered CO2 through upwelling.

TL;DR: In this paper, the authors compare multi-ice core data with δ18O model output for the early last interglacial Antarctic sea ice minimum and find that the spatial pattern of δ 18O across Antarctica is sensitive to the spatial patterns of sea ice retreat.

TL;DR: It is shown that Central South America contributed up to ~80% of the dust deposition in the South Pacific Subantarctic Zone via efficient circum-Antarctic dust transport during the LGM, whereas the Antarctic Zone was dominated by dust from Australia.

TL;DR: In this article, the authors present simulations of the Last Glacial Maximum (LGM) using the CSIRO Mk3L-COAL earth system model to test the contribution of physical and biogeochemical processes to ocean carbon storage.

TL;DR: Analysis of micropaleontologic evidence in a deep-sea core in the south-west Indian Ocean indicates that the Agulhas Current was not a dominant feature of this region during glacial intervals, and suggests that seasonal changes in circulation may have been more pronounced in the southwest Indian Ocean than today.

TL;DR: Data sets of glacial-interglacial dust-supply cycles from the largest Southern Ocean sector, the polar South Pacific, are presented, indicating three times higher dust deposition during glacial periods than during interglacials for the past million years.

TL;DR: In this article, a multi-year sediment trap was deployed in the Weddell Sea, where the annual particle flux measured was the smallest yet observed in the world ocean, and showed extreme variability.