Episodes of surface westerly winds as observed from islands in the western tropical Pacific Academic Article uri icon


  • Four types of westerly episodes are found; we call them types N, C, S, or FS, according to whether the maximum westerly wind is found north of, centered on, south of, or "far south' of the equator near the international date line. Sixteen, 45, 47, and 47 events of type N, C, S, and FS are identified, respectively. The strongest westerly winds are associated with type C and S events; maximum daily average values can exceed 20 m s-1. Only type C and S events are found to have substantial equatorial zonal wind anomalies. Several examples of type C and S events are presented. Composite events of each type have been computed, and their characteristics are described. -from Authors

published proceedings

  • Journal of Geophysical Research

author list (cited authors)

  • Harrison, D. E., & Giese, B. S

complete list of authors

  • Harrison, DE||Giese, BS

publication date

  • January 1991