Letter to the editor: Are the North Atlantic Oscillation and the Southern Oscillation related in any time-scale? - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Annales Geophysicae Année : 2000

Letter to the editor: Are the North Atlantic Oscillation and the Southern Oscillation related in any time-scale?

Résumé

The North Atlantic Oscillation (NAO) and the Southern Oscillation (SO) are compared from the standpoint of a possible common temporal scale of oscillation. To do this a cross-spectrum of the temporal series of NAO and SO indices was determined, finding a significant common oscillation of 6-8 years. To assure this finding, both series were decomposed in their main oscillations using singular spectrum analysis (SSA). Resulting reconstructed series of 6-8 years oscillation were then cross-correlated without and with pre-whitened, the latter being significant. The main conclusion is a possible relationship between a common oscillation of 6-8 years' that represents about 20% of the SO variance and about 25% of the NAO variance.
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Dates et versions

hal-00316579 , version 1 (18-06-2008)

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  • HAL Id : hal-00316579 , version 1

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R. Garcia, P. Ribera, L. Gimenoo, E. Hernández. Letter to the editor: Are the North Atlantic Oscillation and the Southern Oscillation related in any time-scale?. Annales Geophysicae, 2000, 18 (2), pp.247-251. ⟨hal-00316579⟩

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