Since the first release of WOD98, the staff of the Ocean Climate Laboratory have performed additional quality control on the database. Version 2.0 also includes Ocean Data View (ODV) software developed by R.Schlitzer. (ODV software will uncompress selected data files and offers users several options for viewing the WOD98 data.). The Ocean Climate Laboratory (OCL) of NOAA's National Oceanographic Data Center (NODC) has completed the first major phase of a project to update previous releases of global oceanographic data. World Ocean Database 1998 (WOD98) expands on World Ocean Atlas 1994 (WOA94) by including the additional variables nitrite, pH, alkalinity, chlorophyll, and plankton, as well as all available metadata and meteorology. WOD98 is an International Year of the Ocean product. The World Ocean Database 1998 is comprised of five CD-ROMs containing profile and plankton/biomass data in compressed format. WOD98-01 through WOD98-04 contain observed level data, WOD98-05 contains all the standard level data.