Were last glacial climate events simultaneous between Greenland and France? A quantitative comparison using non-tuned chronologies

Maarten Blaauw, B. Wohlfarth, J.A. Christen, L. Ampel, D. Veres, K.A. Hughen, F. Preusser, A. Svensson

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

Several large abrupt climate fluctuations during the last glacial have been recorded in Greenland ice cores and archives from other regions. Often these Dansgaard-Oeschger events are assumed to have been synchronous over wide areas, and then used as tie-points to link chronologies between the proxy archives. However, it has not yet been tested independently whether or not these events were indeed synchronous over large areas. Here, we compare Dansgaard-Oeschger-type events in a well-dated record from southeastern France with those in Greenland ice cores. Instead of assuming simultaneous climate events between both archives, we keep their age models independent. Even these well-dated archives possess large chronological uncertainties that prevent us from inferring synchronous climate events at decadal to multi-centennial time scales. If possible, comparisons between proxy archives should be based on independent, non-tuned time-scales. Copyright (C) 2009 John Wiley & Sons, Ltd.
Original languageEnglish
Pages (from-to)387-394
Number of pages8
JournalJournal of Quaternary Science
Volume25
Issue number3
DOIs
Publication statusPublished - Mar 2010

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)
  • Palaeontology

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