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Showing 1–9 of 9 results
Advanced filters: Author: Xavier Crosta Clear advanced filters

  • The Mertz Glacier Polynya—a site of sea ice production and Antarctic Bottom Water formation—was strongly impacted following the calving of a massive iceberg in 2010. Here, the authors present a 250-year long sea ice reconstruction from the region and present evidence for a ~70-year calving cyclicity.

    • P. Campagne
    • Xavier Crosta
    • G. Massé
    Research
    Nature Communications
    Volume: 6, P: 1-9

  • Ocean sediment records suggest that the modern Antarctic Circumpolar Current did not exist before the late Miocene cooling, indicating its origin is linked to the expansion of the Antarctic Ice Sheet.

    • Dimitris Evangelinos
    • Johan Etourneau
    • Carlota Escutia
    ResearchOpen Access
    Nature Geoscience
    Volume: 17, P: 165-170

  • The North Water polynya is a unique but vulnerable ecosystem, home to Indigenous people and Arctic keystone species. New palaeoecological records from Greenland suggest human abandonment c. 2200–1200 cal yrs BP occurred during climate-forced polynya instability, foreshadowing future ecosystem declines.

    • Sofia Ribeiro
    • Audrey Limoges
    • Thomas A. Davidson
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-12

  • Ocean warming contributes to the thinning of the Antarctic ice shelves, however, lack of observations has prevented a quantification of this contribution. Here the authors use geological records to show that 0.3–1.5 °C ocean warming has played a central role on regional ice shelf instability over the last 9000 years.

    • Johan Etourneau
    • Giovanni Sgubin
    • Jung-Hyun Kim
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-8

  • The marine nitrogen cycle was altered during the transition from glacial to interglacial conditions. An analysis of δ15N records throughout the world’s oceans suggests that rates of denitrification in the water column accelerated during the last deglaciation.

    • Eric D. Galbraith
    • Markus Kienast
    • Jin-Yu Terence Yang
    Research
    Nature Geoscience
    Volume: 6, P: 579-584

  • Antarctic climate trends observed in the satellite record are compared with a two hundred year paleoclimate record. The satellite record is found to be too short to attribute changes to anthropogenic forcing, with natural variability overwhelming the forced signal.

    • Julie M. Jones
    • Sarah T. Gille
    • Tessa R. Vance
    Reviews
    Nature Climate Change
    Volume: 6, P: 917-926

  • Large grassland and open savannah fires occurred during humid periods of the Holocene in subtropical Africa and contributed to increased carbon dioxide in the atmosphere, according to the concentration and morphotype of microcharcoals in marine sediments off Africa

    • Aritina Haliuc
    • Anne-Laure Daniau
    • Xavier Crosta
    ResearchOpen Access
    Communications Earth & Environment
    Volume: 4, P: 1-11