Pacific Interdecadal Variability from Coral Skeletons

Summary

Coral oxygen isotope (δ18O) time series are being used to reconstruct El Niño Southern Oscillation (ENSO) and Interdecadal Pacific Oscillation (IPO) variability over the last 350+ years. These are coral-based records are from Fiji and Tonga in the South Pacific Convergence Zone (SPCZ). These long records are used to investigate whether shorter term ENSO and longer-term IPO variability are linked – these results suggest they are separate.

B. K. Linsley et al., 2008; Decadal-Interdecadal Climate Variability from Multi-Coral Oxygen Isotope Records in the South Pacific Convergence Zone Region Since 1650AD, Paleoceanography, vol 23, PA2219, doi: 10.1029/2007PA001539.