FIG. 10: Time series of (a) stratospheric zonal winds and (b) anomalies averaged between Curacao (12 N), Barbados (13 Nand Trinidad (11 N)). Values at 50 mb (30 mb) are shown by solid (dashed) curves. Units are in m s-1. Anomalies are calculated from the 1950-1990 base period monthly means.