%0 Journal Article
%A García Herrera, Ricardo Francisco
%A Ribera, Pedro
%A Gimeno, Luis
%A Hernández Martín, Emiliano
%T Are the North Atlantic Oscillation and the Southern Oscillation related in any time-scale?
%D 2000
%@ 0992-7689
%U https://hdl.handle.net/20.500.14352/59846
%X 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.
%~