a space-time spectral analysis is applied to the 900-mbar meridional wind component over the equatorial Pacific Ocean. Cloud drift vectors, in the form of movie loops derived manually from cloud-tracking satellites, constitute the data base for this investigation. The major conclusions are as follows: (1) The maximum energy density levels of the wind occur at low wave numbers over a broad range of frequencies. These disturbances appear to manifest themselves as fluctuations occurring simultaneously over a large span of longitude. (2) Investigation of the high frequency--high wave number structure is difficult because of the general shortage of reliable data and the uneven satellite sampling intervals. Selection of spectral parameters becomes a compromise between the problems of high aliasing and low reliability. A high frequency--low wave number (time lag of 5 hours and space separation of 2.1¿ longitude) study was selected. (3) There was no indication of a distinct 4-day signal in our spectra. (4) There appears to be less high-frequency energy in the equatorial band (1.05¿S to 1.05¿N) than in the other two more southerly bands (5.25¿S to 3.15¿S and 3.15¿S to 1.05¿S).