837432.fig.007a
(a) Difference of SLP anomaly
837432.fig.007b
(b) Zonal wind stress anomaly
Figure 7: The evolution of the difference of the sea level pressure anomaly (ΔSLP) between East Pacific (80°E-160°E, 5°S-5°N) and West Pacific (160°W-80°W, 5°S-5°N) and zonal wind stress anomaly in equatorial Pacific (120°E-70°W, 5°S-5°N) since the 20th century from IPCC-AR4 data.