Coupled European and Greenland last glacial dust activity driven by North Atlantic climate

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DOI

  • Gábor Újvári, Hungarian Academy of Sciences, Danmarks Tekniske Universitet
  • ,
  • Thomas Stevens, Uppsala University
  • ,
  • Mihály Molnár, Hungarian Academy of Sciences
  • ,
  • Attila Demény, Hungarian Academy of Sciences
  • ,
  • Fabrice Lambert, Pontificia Universidad Catolica de Chile
  • ,
  • György Varga, Hungarian Academy of Sciences
  • ,
  • A. J. Timothy Jull, Hungarian Academy of Sciences, University of Arizona
  • ,
  • Barna Páll-Gergely, Hungarian Academy of Sciences
  • ,
  • Jan Pieter Buylaert, Danmarks Tekniske Universitet
  • ,
  • János Kovács, University of Pecs, Szentágothai Research Centre

Centennial-scale mineral dust peaks in last glacial Greenland ice cores match the timing of lowest Greenland temperatures, yet little is known of equivalent changes in dust-emitting regions, limiting our understanding of dust−climate interaction. Here, we present the most detailed and precise age model for European loess dust deposits to date, based on 125 accelerator mass spectrometry14C ages from Dunaszekcso, } Hungary. The record shows that variations in glacial dust deposition variability on centennial–millennial timescales in east central Europe and Greenland were synchronous within uncertainty. We suggest that precipitation and atmospheric circulation changes were likely the major influences on European glacial dust activity and propose that European dust emissions were modulated by dominant phases of the North Atlantic Oscillation, which had a major influence on vegetation and local climate of European dust source regions.

OriginalsprogEngelsk
TidsskriftProceedings of the National Academy of Sciences of the United States of America
Vol/bind114
Nummer50
Sider (fra-til)E10632-E10638
ISSN0027-8424
DOI
StatusUdgivet - 12 dec. 2017

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