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Southern Ocean dust–climate coupling over the past four million years

Author

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  • Alfredo Martínez-Garcia

    (Geological Institute
    DFG-Leibniz Center for Surface Process and Climate Studies, Institute for Geosciences, Potsdam University, Potsdam D-14476, Germany
    Institut de Ciència i Tecnologia Ambientals (ICTA), Universitat Autònoma de Barcelona, Bellaterra 08193, Catalonia, Spain)

  • Antoni Rosell-Melé

    (Institut de Ciència i Tecnologia Ambientals (ICTA), Universitat Autònoma de Barcelona, Bellaterra 08193, Catalonia, Spain
    Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona 08010, Catalonia, Spain
    College of Oceanic and Atmospheric Sciences, Oregon State University)

  • Samuel L. Jaccard

    (Geological Institute)

  • Walter Geibert

    (School of GeoSciences, The University of Edinburgh, Edinburgh EH9 3JW, UK
    Scottish Association for Marine Science (SAMS), Scottish Marine Laboratory)

  • Daniel M. Sigman

    (Princeton University)

  • Gerald H. Haug

    (Geological Institute
    DFG-Leibniz Center for Surface Process and Climate Studies, Institute for Geosciences, Potsdam University, Potsdam D-14476, Germany)

Abstract

Dust supply factor in climate change Dust plays a central part in ocean biogeochemical cycles by supplying iron and other essential micronutrients to regions where marine productivity is limited by the availability of iron. Martínez-Garcia et al. present a marine record of dust and iron supply to the Southern Ocean during the past four million years. The data, derived from leaf waxes, establish that previous records of dust flux from Antarctic ice cores are broadly representative of a larger area. Importantly, the dust and iron supply rose sharply 1.25 million years ago, suggesting that increased dust supply may be a major influence on the more severe swings between the glacial and interglacial climate of the late Pleistocene.

Suggested Citation

  • Alfredo Martínez-Garcia & Antoni Rosell-Melé & Samuel L. Jaccard & Walter Geibert & Daniel M. Sigman & Gerald H. Haug, 2011. "Southern Ocean dust–climate coupling over the past four million years," Nature, Nature, vol. 476(7360), pages 312-315, August.
    • Handle: RePEc:nat:nature:v:476:y:2011:i:7360:d:10.1038_nature10310
    DOI: 10.1038/nature10310
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    Cited by:

    1. Yuhao Dai & Jimin Yu & Haojia Ren & Xuan Ji, 2022. "Deglacial Subantarctic CO2 outgassing driven by a weakened solubility pump," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Carolyn W. Snyder, 2019. "Revised estimates of paleoclimate sensitivity over the past 800,000 years," Climatic Change, Springer, vol. 156(1), pages 121-138, September.

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