Atlantic meridional overturning circulation during the last glacial maximum

Jean Lynch-Stieglitz, Jess F. Adkins, William B. Curry, Trond Dokken, Ian R. Hall, Juan Carlos Herguera, Joël J.M. Hirschi, Elena V. Ivanova, Catherine Kissel, Olivier Marchal, Thomas M. Marchitto, I. Nicholas McCave, Jerry F. McManus, Stefan Mulitza, Ulysses Ninnemann, Frank Peeters, Ein Fen Yu, Rainer Zahn

    Research output: Contribution to journalReview articlepeer-review

    255 Citations (Scopus)

    Abstract

    The circulation of the deep Atlantic Ocean during the height of the last ice age appears to have been quite different from today. We review observations implying that Atlantic meridional overturning circulation during the Last Glacial Maximum was neither extremely sluggish nor an enhanced version of present-day circulation. The distribution of the decay products of uranium in sediments is consistent with a residence time for deep waters in the Atlantic only slightly greater than today. However, evidence from multiple water-mass tracers supports a different distribution of deep-water properties, including density, which is dynamically linked to circulation.

    Original languageEnglish
    Pages (from-to)66-69
    Number of pages4
    JournalScience
    Volume316
    Issue number5821
    DOIs
    Publication statusPublished - 2007 Apr 6

    ASJC Scopus subject areas

    • General

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