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    The rise and fall of the “marine heat wave” off Western Australia during the summer of 2010/2011

    Access Status
    Fulltext not available
    Authors
    Pearce, Alan
    Feng, M.
    Date
    2012
    Type
    Journal Article
    
    Metadata
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    Citation
    Pearce, Alan F. and Feng, Ming. 2012. The rise and fall of the “marine heat wave” off Western Australia during the summer of 2010/2011. Journal of Marine Systems. 111-112: pp. 139-156.
    Source Title
    Journal of Marine Systems
    DOI
    10.1016/j.jmarsys.2012.10.009
    ISSN
    09247963
    URI
    http://hdl.handle.net/20.500.11937/13513
    Collection
    • Curtin Research Publications
    Abstract

    Record high ocean temperatures were experienced along the Western Australian coast during the austral summer of 2010/2011. Satellite-derived sea surface temperature (SST) anomalies in February 2011 peaked at 3 °C above the long-term monthly means over a wide area from Ningaloo (22°S) to Cape Leeuwin (34°S) along the coast and out to >200 km offshore. Hourly temperature measurements at a number of mooring sites along the coast revealed that the temperature anomalies were mostly trapped in the surface mixed layer, with peak near shore temperatures rising to ~5 °C above average in the central west coastal region over a week encompassing the end of February and early March, resulting in some devastating fish kills as well as temporary southward range extensions of tropical fish species and megafauna such as whale sharks and manta rays. The elevated temperatures were a result of a combination of a record strength Leeuwin Current, a near-record La Niña event, and anomalously high air–sea heat flux into the ocean even though the SST was high. This heat wave was an unprecedented thermal event in Western Australian waters, superimposed on an underlying long-term temperature rise.

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