Abstract: In this paper, time series data from CO ADS (monthly climatological anomalies of SST and sea level pressure and SOI for parts of low latitude Pacific) were selected to compare in MEM analyses the common characteristics of the interannual oscillations in air-sea systems and differences between individual regions. In addition, multivariable MEM is applied to derive functions of coagulation and phase difference for individual systems at principle periods of the interannual oscillations, on which discussions are based of possible links among the systems’ quasi-periodic oscillations.