Using multiyear data (1985--2002) derived from the second Stratospheric Aerosol and Gas Experiment (SAGE II) and meteorological information (1992--2004) from the United Kingdom Meteorological Office, the present study investigates the seasonal structure of the southern tropical zonal ozone wave-1 in the upper troposphere. By using multiyear near-global ozone profile measurements from the SAGE II satellite instrument, the present study complements the analyses based on data from tropical ozonesonde networks, such as the Southern Hemisphere Additional Ozonesondes (SHADOZ), and from satellite total tropospheric ozone. The seasonal variations in the meridional ozone distributions in the high-ozone longitudinal sector (40¿W--60¿E) and the low-ozone longitudinal sector (60¿E--320¿E) are investigated in detail. The results indicate that the southern tropical zonal ozone wave-1 is a year-round feature, with the strongest amplitude occurring in austral spring and weakest in autumn. The influence of the meridional (Hadley) and equatorial (Walker) circulations on the ozone wave-1 is also examined. The analysis suggests that both Hadley and Walker circulations can contribute to the formulation of the ozone wave-1 climatological structure.