Reference : Multy-year cycles observed in air temperature data and proxy series
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Mathematics
Multy-year cycles observed in air temperature data and proxy series
Mabille, Georges [Université de Liège - ULg > Site Saint-Luc > Site Saint-Luc - Département de géographie >]
Nicolay, Samuel mailto [Université de Liège - ULg > Département de mathématique > Analyse - Analyse fonctionnelle - Ondelettes >]
European Physical Journal. Special Topics
EDP Sciences
Yes (verified by ORBi)
[en] Wavelet transform ; Climate variability ; Surface air temperatures
[en] First, palaeoclimatic time series are analyzed under the lens of the continuous wavelet transform. Two cycles, of period 30 and 43 months respectively, are detected in millennial temperature reconstructions. These rhythms correspond to the ones detected in weather station temperature records in a previous study of the authors. It is then showed that most parts of the globe are affected by at least one of the two cycles. Their relationship with the main climatic indices is also investigated, as well as the statistical significance of the observations.

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