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| Titel |
Exploring linkages between time series: Wavelet coherence and phase-aware teleconnections |
| VerfasserIn |
A. Grinsted |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250026876
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| Zusammenfassung |
| Finding linkages between time series can teach us about the underlying dynamics of a complex system. E.g. A statistical link between two time series can be interpreted as one part of the system is forcing another, or that they are responding to the same forcing. A classical statistical measure of the linkage strength is the Pearson correlation coefficient. A stronger test for quasi-period signals requires a consistent phase relationship between the series. The phase relationship can provide additional evidence for the coupling mechanism. Phase-aware teleconnection patterns can be made by extending the phase coherence and relative phase to a spatial grid. This may be useful in e.g. tracking wave propagation. Wavelet coherence expands the coherence concept to time frequency space. |
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