The World Ocean Atlas (WOA) is a data product of the Ocean Climate Laboratory of the National Centers for Environmental Information (U.S.).[1] The WOA consists of a climatology of fields of in situ ocean properties for the World Ocean. It was first produced in 1994[2] (based on the earlier Climatological Atlas of the World Ocean, 1982[3]), with later editions at roughly four year intervals in 1998, 2001, 2005, 2009, 2013, 2018, and 2023.[4]