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Folland et al. 2002
Folland, C.K., Renwick, J.A., Salinger, M.J. and Mullan, A.B. (2002). Relative influences of the Interdecadal Pacific Oscillation and ENSO on the South Pacific Convergence Zone. Geophysical Research Letters 29: doi: 10.1029/2001GL014201. issn: 0094-8276.

The South Pacific Convergence Zone (SPCZ), one of the most extensive features of the global atmospheric circulation, is shown to vary its location according to both the polarity of the El Ni¿o/Southern Oscillation (ENSO), and of the Interdecadal Pacific Oscillation (IPO). We first demonstrate that the IPO can be regarded as the quasi-symmetric Pacific-wide manifestation of the Pacific Decadal Oscillation that has been described for the North Pacific. Shifts in the position of the SPCZ related to ENSO on interannual time scales and to the IPO on decadal time scales appear to be of similar magnitude and are largely linearly independent. A station pressure-based index of variations in SPCZ latitude is shown to be significantly related to the polarity of the IPO when ENSO influences are accounted for. Movements of this sensitive section of the SPCZ have occurred in phase with those of the IPO since the 1890s.

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Abstract

Keywords
Global Change, Climate dynamics, Meteorology and Atmospheric Dynamics, General circulation, Meteorology and Atmospheric Dynamics, Ocean/atmosphere interactions (0312, 4504), Meteorology and Atmospheric Dynamics, Climatology
Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/
Publisher
American Geophysical Union
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