Journal article
Impact of different ENSO regimes on southwest pacific tropical cyclones
SS Chand, JL Mcbride, KJ Tory, MC Wheeler, KJE Walsh
Journal of Climate | Published : 2013
Abstract
The influence of different types of ENSO on tropical cyclone (TC) interannual variability in the central southwest Pacific region (58-258S, 1708E-1708W) is investigated. Using empirical orthogonal function analysis and an agglomerative hierarchical clustering of early tropical cyclone season Pacific sea surface temperature, years are classified into four separate regimes (i.e., canonical El Niño, canonical La Niña, positive-neutral, and negative-neutral) for the period between 1970and 2009.These regimes are found to have a large impact on TC genesis over the central southwest Pacific region. Both the canonical El Niño and the positive-neutral years have increased numbers of cyclones, with an..
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Funding Acknowledgements
We acknowledge the Pacific-Australia Climate Change Science and Adaptation Planning (PACCSAP) project for supporting this work. PACCSAP is funded by AusAID, in collaboration with the Department of Climate Change and Energy Efficiency, and delivered by the Bureau of Meteorology and the Commonwealth Scientific and Industrial Research Organisation (CSIRO). We also appreciate the constructive comments on our manuscript by Drs. Andrew Dowdy and Richard Dare of the Centre for Australian Weather and Climate Research. The first author also acknowledges some informal discussion on the work with Drs. Harry Hendon and Scott Power of the Centre for Australian Weather and Climate Research.