publication . Article . 2016

Coherent tropical Indo-Pacific interannual climate variability

Wieners, C.E.; de Ruijter, W.P.M.; Ridderinkhof, W.; von der Heydt, A.S.; Dijkstra, H.A.;
Open Access English
  • Published: 01 Jan 2016
  • Country: Netherlands
A multichannel singular spectrum analysis (MSSA) applied simultaneously to tropical sea surface temperature (SST), zonal wind, and burstiness (zonal wind variability) reveals three significant oscillatory modes. They all show a strong ENSO signal in the eastern Pacific Ocean (PO) but also a substantial SST signal in the western Indian Ocean (IO). A correlation-based analysis shows that the western IO signal contains linearly independent information on ENSO. Of the three Indo-Pacific ENSO modes of the MSSA, one resembles a central Pacific (CP) El Niño, while the others represent eastern Pacific (EP) El Niños, which either start in the central Pacific and grow eas...
free text keywords: Geographic location/entity, Indian Ocean, Pacific Ocean, Circulation/ Dynamics, ENSO, Mathematical and statistical techniques, Empirical orthogonal functions, Principal components analysis, Variability, Interannual variability
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