Atmosphere-Ocean dynamics in the western Indian Ocean in corals

J. Zinke, M. Pfeiffer, O. Timm, W.-C. Dullo, G.R. Davies

    Research output: Contribution to JournalArticleAcademicpeer-review

    Abstract

    We present a set of Parites coral oxygen isotope records from the tropical and subtropical Western Indian Ocean covering the past 120-336 years. All records were thoroughly validated for proxy response to regional climate factors and their relation to large-scale climate modes. The records show markedly different imprints of regional climate factors. At the same time, all coral records show clear teleconnections between the Western Indian Ocean and the El Niño-Southern Oscillation (ENSO). The multi-proxy site analysis enables the detection of the covariance structure between individual records and climate modes such as ENSO. This method unravels shifts in ENSO teleconnectivity of the Western and Central Indian Ocean on multi-decadal time-scales (after 1976). The Seychelles record shows a stationary correlation with ENSO, Chagos corals show evidence for non-stationary δ
    Original languageEnglish
    Pages (from-to)121-142
    JournalPhilosophical Transactions of the Royal Society A. Mathematical, Physical and Engineering Sciences
    VolumeA363
    DOIs
    Publication statusPublished - 2005

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