World Ocean Atlas 2018 (WOA18) data for resolution: 1.00 degree and 0.25 degree time-span: All-Years time-period: Annual, seasonal and monthly The objectively analyzed global ocean historical hydrographic data from the U.S. NODC World Ocean Atlas 2018 are provided in ODV collection format, ready to be used with the Ocean Data View analysis and visualization software. NOTE: ODV 4.6.0 or later is required. Data are available for the following variables: - Temperature [degC] - Salinity [psu] - Oxygen [umol/kg] - Oxygen Saturation [%] - AOU [umol/kg] - Phosphate [umol/kg] - Nitrate [umol/kg] - Silicate [umol/kg] and the following data types: - Objectively analyzed climatology - Seasonal or monthly climatology minus annual climatology - Number of observations Data are given at up to 102 standard depths. For more information on WOA18 see: ftp://ftp.nodc.noaa.gov/pub/data.nodc/woa/WOA18/DOC/woa18documentation.pdf. The ODV data collection was produced from WOA18 files by Reiner Schlitzer, Alfred Wegener Institute, Bremerhaven