Long-term behaviour of ENSO: Interactions with the PDO over the past 400 years inferred from paleoclimate records

Danielle C. Verdon*, Stewart Franks

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

166 Citations (Scopus)

Abstract

This study uses proxy climate records derived from paleoclimate data to investigate the long-term behaviour of the Pacific Decadal Oscillation (PDO) and the El Niño Southern Oscillation (ENSO). During the past 400 years, climate shifts associated with changes in the PDO are shown to have occurred with a similar frequency to those documented in the 20th Century. Importantly, phase changes in the PDO have a propensity to coincide with changes in the relative frequency of ENSO events, where the positive phase of the PDO is associated with an enhanced frequency of El Niño events, while the negative phase is shown to be more favourable for the development of La Niña events.

Original languageEnglish
Article numberL06712
JournalGeophysical Research Letters
Volume33
Issue number6
DOIs
Publication statusPublished - 28 Mar 2006

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