The plots in this data group are of monthly summaries of the WOA98 (World Ocean Database 1998) standard level data averaged on a 1 degree latitude/longitude grid.

The monthly climatology is calculated from 1945 to 1996 at 33 standard depth levels (0 - 5500 m). Monthly averaged temperature is available at 19 standard depth levels (0 - 1000 m). The following variables are available along with the number of observations averaged in each 1 degree lat/lon box for each variable:

• Temperature
• Salinity