Fig. 2. Lag regressions (0-3 yrs) of the T anomaly in the p-region with T (black contours with shade) and ψg (white contours) anomalies in the North Atlantic. The contour intervals are 0.05K and 100m2s-1, respectively.
The amplitude in the North Atlantic is roughly 0.08K over the entire parameter space. On the other hand, the amplitude in the North Pacific varies with parameters and the maximum appears with the largest γt and the smallest γc. The amplitudes take 0.08K and 0.19K at the standard position for the North Atlantic and the North Pacific, respectively. Note that they are smaller than the observed amplitude of decadal SST anomalies of 0.25K and 0.31K derived from Figs. 1a and 1b. Since the maximum heatflux forcing is constrained by the observed wind anomaly, it may be difficult to explain the observed variance by the coupled mode alone. Amplitude and period of the numerical solutions are relatively insensitive to the change in γh.
