TOGA Basic Level III-A Data Sets

Three data sets are separately supported:

• Surface
• Upper-Air
• Consolidated

For each data set the following is relevant:

• period supported - 1 January 1985 to current date;
• fields are uninitialised analyses for 0000 UTC and 1200 UTC each day;
• each parameter at each level is stored as a field of grid point values on a 2.5° x 2.5° regular rectangular mesh in latitude rows starting at the north and working southwards; within each row values run from west to east starting at the 0° meridian;
• data are stored in FM 92 GRIB using sufficient bits to ensure that the grid point values can be retrieved to an accuracy consistent with the analysis methods used;
• production of the archive has been made as automatic as possible using techniques which enable the data sets to be updated monthly.