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    Corals record long-term Leeuwin current variability including Ningaloo Niño/Niña since 1795

    234890_234890.pdf (1.629Mb)
    Access Status
    Open access
    Authors
    Zinke, Jens
    Rountrey, A.
    Feng, M.
    Xie, S.
    Dissard, D.
    Rankenburg, K.
    Lough, J.
    McCulloch, M.
    Date
    2014
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Zinke, J. and Rountrey, A. and Feng, M. and Xie, S. and Dissard, D. and Rankenburg, K. and Lough, J. et al. 2014. Corals record long-term Leeuwin current variability including Ningaloo Niño/Niña since 1795. Nature Communications. 5: 3607.
    Source Title
    Nature Communications
    DOI
    10.1038/ncomms4607
    Additional URLs
    http://www.nature.com/ncomms/2014/140401/ncomms4607/full/ncomms4607.html
    School
    Department of Environment and Agriculture
    Remarks

    This open access article is distributed under the Creative Commons license http://creativecommons.org/licenses/by-nc-sa/3.0/

    URI
    http://hdl.handle.net/20.500.11937/39515
    Collection
    • Curtin Research Publications
    Abstract

    Variability of the Leeuwin current (LC) off Western Australia is a footprint of interannual and decadal climate variations in the tropical Indo-Pacific. La Niña events often result in a strengthened LC, high coastal sea levels and unusually warm sea surface temperatures (SSTs), termed Ningaloo Niño. The rarity of such extreme events and the response of the southeastern Indian Ocean to regional and remote climate forcing are poorly understood owing to the lack of long-term records. Here we use well-replicated coral SST records from within the path of the LC, together with a reconstruction of the El Niño-Southern Oscillation to hindcast historical SST and LC strength from 1795 to 2010. We show that interannual and decadal variations in SST and LC strength characterized the past 215 years and that the most extreme sea level and SST anomalies occurred post 1980. These recent events were unprecedented in severity and are likely aided by accelerated global ocean warming and sea-level rise. © 2014 Macmillan Publishers Limited.

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