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Ailie J. E. Gallant, Steven J. Phipps, David J. Karoly, A. Brett Mullan, and Andrew M. Lorrey

1. Introduction Climatic teleconnections describe dynamical links between the states of two remote atmosphere–ocean systems ( Liu and Alexander 2007 ). The processes defining teleconnections are numerous but include the propagation of atmospheric and/or oceanic wave trains, such as Kelvin or Rossby waves ( Gill 1980 ; Hoskins and Karoly 1981 ) and/or the mass movement of transient eddies such as weather systems ( Seager et al. 2005 ; Li and Wettstein 2012 ). This propagation induces remote

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Howard J. Diamond, Andrew M. Lorrey, and James A. Renwick

frequency and distribution across the southwest Pacific for well-coupled, ocean-dominated, atmosphere-dominated, or neutral ENSO typologies are delineated in this study. The well-coupled ocean–atmosphere terminology used here is based on the oceanic and atmospheric times series that make up the coupled ENSO index (CEI, see section 2b ). This approach demonstrates the usefulness of highlighting nuances (with important spatial signatures) that are associated with different types of ENSO events, indicates

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Steven J. Phipps, Helen V. McGregor, Joëlle Gergis, Ailie J. E. Gallant, Raphael Neukom, Samantha Stevenson, Duncan Ackerley, Josephine R. Brown, Matt J. Fischer, and Tas D. van Ommen

Commonwealth Scientific and Industrial Research Organisation Mark 3L (CSIRO Mk3L) climate system model, version 1.2, which features enhanced spatial resolution in the ocean relative to the original release of the model ( Phipps et al. 2011 , 2012 ). Mk3L is a fully coupled general circulation model that includes components describing the atmosphere, ocean, sea ice, and land surface. Version 1.2 uses horizontal resolutions of 5.6° longitude by 3.2° latitude for the atmosphere, sea ice, and land surface

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Tessa R. Vance, Tas D. van Ommen, Mark A. J. Curran, Chris T. Plummer, and Andrew D. Moy

relationship between the two time series differentiated by positive or negative SOI (blue or red dots, respectively). Analysis of equatorial Pacific SST anomalies clearly indicate the development of an ENSO event, with El Niño (La Niña) events typically showing patterns of warming (cooling) in the central and eastern Pacific and cooling (warming) in the CWEP. These anomalies and their related lower atmosphere phenomena cause the far-reaching weather patterns well known across the Pacific Basin, as well as

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