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Meta-analysis of tropical surface temperatures during the Last Glacial Maximum

Abstract:

The magnitude of tropical cooling during the Last Glacial Maximum (LGM) has been the subject of uncertainty for over 25 years. We use principles of meta-analysis as an objective approach to reconcile estimates from different proxies. This approach treats each observation as a random estimate of the true mean and weights estimates by their reported precision. We assigned global uncertainties to proxies and derived a new regional standard deviation for temperatures calculated from the Sr/Ca ratio in tropical corals (σ = 1.4°C). Using a Bayesian spatial interpolation scheme, we estimate a mean cooling of LGM tropical sea surface temperatures of -2.7 ± 0.5°C (±σ) and surface air temperatures of -5.4 ± 0.3°C (±σ). Copyright 2005 by the American Geophysical Union.

Año de publicación:

2005

Keywords:

    Fuente:

    scopusscopus

    Tipo de documento:

    Article

    Estado:

    Acceso restringido

    Áreas de conocimiento:

    • Paleoclimatología
    • Ciencias naturales

    Áreas temáticas:

    • Geología, hidrología, meteorología
    • Mammalia

    Contribuidores:

    Lavine M.Lavine M.
    Ballantyne A.P.Ballantyne A.P.
    Paul A. BakerPaul A. Baker
    Liu J.Liu J.
    Crowley T.Crowley T.