Oceanic global and individual basin (i.e., Indian, Pacific and Atlantic oceans) sea surface temperature (SST) and sea level pressure (SLP) are analyzed jointly, using MTM/SVD technique. Besides global and individual secular variability, differences in low-frequency climate signals are evidenced: that is, an inter-decadal signal dominates in the Indian and Pacific oceans, while a quasi-decadal signal dominates in the Pacific and Atlantic oceans. Two inter-annual global and individual climate signals dominate: i.e., ENSO and quasi-biennial (QB). Moreover, significant correlations are found between three known equatorial SST indices (i.e., IO1 in Indian Ocean, NINO3 in Pacific Ocean, and ATL2 in Atlantic Ocean), and SST time-series obtained by summing-up only global lead-frequency signals identified here: i.e., 0.74, 0.82, and 0.56 respectively. These results should help improving long-term climate numerical forecasts and mitigating societal impacts by using observed specific equatorial SSTs time-series, in a climate change context.
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