This collection contains one year of trajectory and velocity data from WOCE surface drifter program (period 1990 to 2000). In addition, data collected from 1979 to 1989 have also been included. These have all undergone the same processing as the data from the WOCE period. They have been included to help place the data collected during WOCE in a larger time context. For more information see the "svp" directory of the WOCE Global Data, Version 3.0 disks.