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Earth System Dynamics An interactive open-access journal of the European Geosciences Union

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© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
03 Sep 2012
Review status
This discussion paper is a preprint. A revision of the manuscript for further review has not been submitted.
Toward a classification of the Central Pacific El Niño
M. Pascolini-Campbell1, D. Zanchettin1, O. Bothe1,2, C. Timmreck1, D. Matei1, J. H. Jungclaus1, and H.-F. Graf3 1Max Planck Institute for Meteorology, Hamburg, Germany
2University of Hamburg, KlimaCampus, Hamburg, Germany
3University of Cambridge, Cambridge, UK
Abstract. We investigate the various methods currently available for distinguishing between the Central Pacific (CP) El Niño (or "El Niño Modoki") and the canonical El Niño by considering 10 different methods and 5 sea surface temperature (SST) datasets from 1880 to 2010. Years which are classified as CP El Niños with the greatest convergence between method and SST dataset are considered to provide a more robust identification of these events. The results identify 13 yr which are classified the most consistently as CP events: 1885/1886, 1914/1915, 1940/1941, 1958/1959, 1963/1964, 1968/1969, 1977/1978, 1986/1987, 1991/1992, 2002/2003, 2003/2004, 2004/2005 and 2009/2010. Our findings also indicate the persistence of CP events throughout the time period investigated, inciting the role of multidecadal natural climate variability in generating CP El Niños.

Citation: Pascolini-Campbell, M., Zanchettin, D., Bothe, O., Timmreck, C., Matei, D., Jungclaus, J. H., and Graf, H.-F.: Toward a classification of the Central Pacific El Niño, Earth Syst. Dynam. Discuss.,, in review, 2012.
M. Pascolini-Campbell et al.
Interactive discussionStatus: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version      Supplement - Supplement
RC C522: 'Reviewer's comments', Anonymous Referee #1, 12 Oct 2012 Printer-friendly Version 
RC C528: 'Comments on esd-2012-21', Anonymous Referee #2, 13 Oct 2012 Printer-friendly Version 
AC C663: 'Final Author Comment', Madeleine Pascolini-Campbell, 21 Nov 2012 Printer-friendly Version 
EC C690: 'editor recommendation', Yves Godderis, 28 Nov 2012 Printer-friendly Version 
M. Pascolini-Campbell et al.
M. Pascolini-Campbell et al.


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