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| [Elektronische Resource] | Aufsatz: | | VerfasserIn: | | Umfang: | graph. Darst | Inhalt: | The manner in which monthly mean sea surface temperature anomalies (SSTAs) show enhanced variance at the annual period in the extratropics (an annual peak in the variance spectrum) is illustrated by observations and model simulations. A mechanism, related to the reemergence of winter SST anomalies, is proposed to explain the annual peak in SST spectrum. The idea is supported by the analysis of a hierarchy of models, including Intergovernmental Panel on Climate Change model simulations. The results of the model experiments further suggest that the annual peak is either weak or absent if decadal SST variability is forced by local airsea interaction. However, if ocean subsurface temperature variability forces decadal SST variability, the annual peak is much stronger. Strong annual peaks may therefore be seen as an indication of ocean-forced decadal SST variability in the extratropics. | Bibliogr. Zusammenhang: | . - Bd. 21.2008, 12, Seite 2810-2823 | | | Lokale Schlagwörter: | | | | Anmerkung: | Zeitschrift in der Bibliothek vorhanden | |
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