Differences And Relationships Of Air-Sea Interaction In The Different Latitudinal Pacific Areas

Diagnostic analysis and contrast are performed in air-sea data and their interaction between the North Pacific and the Tropical Pacific by means of harmonic analysis and SVD. The results show that the main differences in the two areas are as follows:1) Anomaly fields have their larger interdecadal component percentage but smaller interannual component percentage in the North Pacific than in the Tropical Pacific.2) The leading SVD modes of interdecadal variability are indicative of stronger statistical significiance in the North Pacific than in the Tropical Pacific, while the conclusion is contrary as for interannual variability. 3) The upper ocean participates the process of air-sea interaction both in winter and summer in the Tropical Pacific but only in winter in the North Pacific. 4) Air-sea interaction retain its character throughtout the seasonal cycle in the Tropical Pacific, but it is not the same in the North Pacific; And there are also relationships in the two areas: 1) For the interdecadal time scale, there is the same abrupt change both in the North Pacific and in the Tropical Pacific,especially in winter. 2) For the interannual time scale, the leading SVD modes are associated with ENSO events in both two areas.