World Ocean Atlas 2018 (WOA18)

World Ocean Atlas 2018 (WOA18)

World Ocean Atlas 2018 (WOA18) is a set of 0.25x0.25 degree, 1x1 degree, and 5x5 degree climatological fields of in situ temperature and salinity at standard depth levels for annual, seasonal, and monthly compositing periods (1955-2017 (average decades ), 1981-2000 (average decades 1981-2000), 1955-1964, 1965-1974, 1975-1984, 1985-1994, 1995-2004, 2005-2017) for the World Ocean. The 1x1 degree and 5x5 degree also includes other variables such as apparent oxygen utilization, dissolved oxygen, nitrate, percent oxygen saturation, phosphate, and silicate. The climatological fields also includes It includes objectively analyzed, statistical means, and associated statistical fields of observed oceanographic profile data interpolated to standard depth levels.

References for each variable are here.
For example temperature's publication is:
Locarnini, R. A., A. V. Mishonov, O. K. Baranova, T. P. Boyer, M. M. Zweng, H. E. Garcia, J. R. Reagan, D. Seidov, K. W. Weathers, C. R. Paver, I. V. Smolyar, 2019: World Ocean Atlas 2018, Volume 1: Temperature. A. V. Mishonov, Technical Ed., NOAA Atlas NESDIS 81.

These data are openly available to the public. Please acknowledge the National Centers for Environmental Information (NCEI) for the use of these data.

Variables
salinity (unitless), sea water temperature (deg C), apparent oxygen utilization (ml/l), dissolved oxygen (ml/l), nitrate (umol/l), percent oxygen saturation (%), phosphate (umol/l), silicate (umol/l)
  • 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
Zonal Global by 0.25 deg (salinity/sea water temperature only)
Global by 1 deg (all variables)
Global by 5 deg (all variables)
Meridional Global by 0.25 deg (salinity/sea water temperature only)
Global by 1 deg (all variables)
Global by 5 deg (all variables)
Vertical Varies with variable and climatology type. 43-102 standard levels 0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 125, 150, 175, 200, 225, 250, 275, 300, 325, 350, 375, 400, 425, 450, 475, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000, 1050, 1100, 1150, 1200, 1250, 1300, 1350, 1400, 1450, 1500m
Temporal Annual, seasonal, and monthly climatology for various periods
Static?yes
Volume ~105GB
Serverpublic:
Sourcehttps://www.nodc.noaa.gov/OC5/woa18/
Acquired Dec 19, 2019
APDRC contact
Supplementshttps://data.nodc.noaa.gov/woa/WOA18/DOC/woa18documentation.pdf