Fig. 1　Coefficient of SST regression onto a, T_pac (180-100W, 20S-20N) and b, T_atl (50W-20W, 0-20N & 30W-0, 20S-0). c, Their meridional structure obtained by zonally averaging between 180-100W for the Pacific (thin) and 60W-0 for the Atlantic (thick curve) regression.

Fig. 2　Schematics of the Bjerknes (left) and WES (right) feedbacks that favor the equatorially symmetric and anti-symmetric modes, respectively. Contours are for SST perturbation (negative in dashed line) and vectors for wind velocity.

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