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Hunting spectro-temporal information in unevenly spaced paleoclimate time series

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  • Josué M. Polanco-Martínez
  • Sérgio H. Faria

Abstract

Here we present some preliminary results of a statistical–computational implementation to estimate the wavelet spectrum of unevenly spaced paleoclimate time series by means of the Morlet Weighted Wavelet Z-Transform (MWWZ). A statistical significance test is performed against an ensemble of first-order auto-regressive models (AR1) by means of Monte Carlo simulations. In order to demonstrate the capabilities of this implementation, we apply it to the oxygen isotope ratio (δ18O) data of the GISP2 deep ice core (Greenland).

Suggested Citation

  • Josué M. Polanco-Martínez & Sérgio H. Faria, 2014. "Hunting spectro-temporal information in unevenly spaced paleoclimate time series," Working Papers 2014-07, BC3.
    • Handle: RePEc:bcc:wpaper:2014-07
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    1. Marta Olazabal & Sonia De Gregorio Hurtado & Eduardo Olazabal & Filomena Pietrapertosa & Monica Salvia & Davide Geneletti & Valentina D?Alonzo & Efrén Feliú & Senatro Di Leo & Diana Reckien, 2014. "How are Italian and Spanish cities tackling climate change? A local comparative study," Working Papers 2014-03, BC3.
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