Southern hemisphere water mass conversion linked with North Atlantic climate variability

Rainer Zahn Knoll Geb Zahn

    Research output: Contribution to journalArticleResearchpeer-review

    167 Citations (Scopus)

    Abstract

    Intermediate water variability at multicentennial scales is documented by 340,000-year-long isotope time series from bottom-dwelling foraminifers at a mid-depth core site in the southwest Pacific. Periods of sudden increases in intermediate water production are linked with transient Southern Hemisphere warm episodes, which implies direct control of climate warming on intermediate water conversion at high southern latitudes. Coincidence with episodes of climate cooling and minimum or halted deepwater convection in the North Atlantic provides striking evidence for interdependence of water mass conversion in both hemispheres, with implications for interhemispheric forcing of ocean thermohaline circulation and climate instability.
    Original languageEnglish
    Pages (from-to)1741-1746
    JournalScience
    Volume307
    Issue number5716
    DOIs
    Publication statusPublished - 18 Mar 2005

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