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Temperature - Statistical mean on 1° grid for 1991-2020 years

The Temperature climatological fields can be downloaded as an individual file or a compressed file of all climatological fields and related statistics. The WOA documentation includes information on downloading and reading the data.

Available formats:
Available grids:
Available fields:
Available decadal periods:

File naming conventions:
woa23_[DECA]_[v][tp][ft][gr].[form_end] - all formats, except NetCDF
woa23_[DECA]_[v][tp]_[gr].[form_end] - NetCDF format
where:
[DECA] - decade
[v] - variable
[tp] - time period
[ft] - field type
[gr] - grid
[form_end] - file name extention
Note: '.dat' - ASCII; '.csv' - comma separated value; '.dbf', '.shp', '.shx' - ArcGIS shape files; '.nc' - netCDF files

Short description of the statistical fields in WOA

  • Objectively analyzed climatologies are the objectively interpolated mean fields for oceanographic variables at standard depth levels for the World Ocean.
  • The statistical mean is the average of all unflagged interpolated values at each standard depth level for each variable in each 1° square which contains at least one measurement for the given oceanographic variable.
  • The number of observations of each variable in each 1° square of the World Ocean at each standard depth level.
  • The standard deviation about the statistical mean of each variable in each 1° square at each standard depth level.
  • The standard error of the mean of each variable in each 1° square at each standard depth level.
  • The seasonal or monthly climatology minus the annual climatology at each 1° square at each standard depth.
  • The statistical mean minus the climatological mean at each 1° square at each standard depth. This value is used as an estimate of interpolation and smoothing error.
  • The number of 1° squares within the smallest radius of influence around each 1° square which contain a statistical mean.