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grl23812-sup-0001-readme.txtplain text document2Kreadme.txt
grl23812-sup-0002-txts01.txtplain text document1KText S1. This text file describes the observational data employed in the article as well as the methods of their analysis.
grl23812-sup-0003-fs01.epsPS document0KFigure S1. Time-longitude diagrams of SST anomalies at 20N, 40N and 50N of latitudes, from coast to coast. The longitude axis has been scaled proportional to the real distance.
grl23812-sup-0004-fs02.epsPS document330KFigure S2. (a) Correlations function of the lag and the pseudo-period of the Morlet wavelet between the continuous wavelet transform coefficients of PC1NP and PC2NP (Figure 1c). (b) Average (blue) and maximum (red) of the absolute value of previous time-lag correlations of (a) function of the pseudo-period of the wavelet. (c) Average length of lag (or apparent half-period) between two consecutive zeros for a given pseudo-period of the previous time-lag correlations of (a). If the same oscillation is present in both signals PC1NP and PC2NP, the time-lag correlation as a function of the lag must exhibit an apparent periodicity which corresponds to the pseudo period of the wavelet: the dashed line correspond at an half-period of the time-lag correlation matching the half of the pseudo-period of the wavelet.

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