Warning Signals Research

  • Deuterium early warning signal used for Glaciation I-IV presented in Dakos 2008:
Deuterium signal over past 4 glaciations
Deuterium signal over past 4 glaciations
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Deuterium signal over past 4 glaciations

  • Does smoothing to remove trends – longer-scale fluctuations? Seems unnatural, many of those are part of the signal. Also applied to simulated time series – even those these are at stationarity! Bandwidth chosen by visual inspection.
  • Get the CaCO3 presented in Scheffer 2010 and Dakos 2008. – Done: CaCO3