![]() World Ocean Atlas 2018: Product Documentation. The WOA18 temperature and salinity fields were released preliminarily to crowd source quality assurance from the WOA user community, which has successfully identified suspect features in previous releases. It includes approximately 3 million new oceanographic casts added to the WOD, as well as renewed and updated quality control. World Ocean Atlas 2023, Volume 2: Salinity. World Ocean Atlas 2023, Volume 1: Temperature. ![]() If basins are not the same, the sum of the mixing numbers must be > 0 mixnumber_04.msk: mixing number (values -2 through 2) for 0.25° grid.If basins are not the same, the sum of the mixing numbers must be >0 mixnumber_01.msk: mixing number (values -2 through 2) for 1° grid.landsea_04.msk: bottom depth assigned to each 0.25°x0.25° square.landsea_01.msk: bottom depth assigned to each 1°x1° square.basinmask_04.ms: basin mask used for WOA climatology objective analysis for 0.25° grid.basinmask_01.msk: basin mask used for WOA climatology objective analysis for 1° grid.Normals also establish a baseline that can help researchers determine whether or not current observations are within the statistical norm in the context of the most recent 30-year climatological background. Normals provide long-term means for initializing models, environmental studies, checking in situ observations, etc. Climate NormalsĪ "normal" is defined by the World Meteorological Organization (WMO) as the 30-year average of data for a particular variable, calculated for a uniform time period. WOA23 includes approximately 2.4 million new oceanographic casts added to the WOD since WOA18’s release, as well as renewed and updated quality control. The full WOA23 release is planned for Septemand will include oxygen, nutrients, density, conductivity, mixed layer depth, and bottom temperature, in addition to temperature and salinity climatological fields. These fields were, in part, generated to complement the recently released U.S. The WOA23, initially released in October 2022, included the 1991–2020 climate normals of global ocean temperature and salinity at selected standard depths.
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