Geostrophic velocities were calculated using a recently assembled hydrographic database comprised of NODC station data (1904-1990). The property fields generated from this database are smoothed on isopycnal surfaces and have a nominal resolution of one degree for the spatial domain of this study. To reference the geostrophic velocities, SOFAR float data over the period 1972-1990 are used. The flow fields are compared to fields produced using an assumed level of no motion. -from Authors