NODC World Ocean Atlas 1998

NODC (Levitus) World Ocean Atlas Data 1998

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SPECIFICATIONS

Temporal Coverage

  • Long term annual means, derived from data for years 1900 - 1997
  • Long term seasonal means, derived from data for years 1900 - 1997
  • Long term monthly means, derived from data for years 1900 - 1997

Spatial Coverage

  • 1.0 degree latitude x 1.0 degree longitude global grid (180x360)
  • 89.5N - 89.5S 0.5E - 359.5E
  • 5.0 degree latitude x 5.0 degree longitude global grid (36x72).
  • 87.5N - 87.5S, 2.5E - 357.5E.

Levels

  • Depth in meters at 0.0, 10.0, 20.0, 30.0, 50.0, 75.0, 100.0, 125.0, 150.0, 200.0, 250.0, 300.0, 400.0, 500.0, 600.0, 700.0, 800.0, 900.0, 1000.0, 1100.0, 1200.0, 1300.0, 1400.0, 1500.0, 1750.0, 2000.0, 2500.0, 3000.0, 3500.0, 4000.0, 4500.0, 5000.0, 5500.0.
  • Depth in meters at 0.0, 10.0, 20.0, 30.0, 50.0, 75.0, 100.0, 125.0, 150.0, 200.0, 250.0, 300.0, 400.0, 500.0, 600.0, 700.0, 800.0, 900.0, 1000.0, 1100.0, 1200.0, 1300.0, 1400.0, 1500.0.

Statistics

  • anal - analyzed mean
  • dd - data distribution (basically number of observations)
  • gp - grid point (number of cells influencing this cell's value)
  • ma - anomaly; annual mean subtracted
  • oa - analyzed annual mean subtracted from raw mean
  • raw - raw (AKA unanalyzed) mean
  • sd - standard deviation
  • se - standard error

Update Schedule

  • None.

Dataset Format and Size

Missing Data

  • Missing data is flagged with a value of 32766.
The atlas contains annual, seasonal, and monthly long term means for temperature and salinity at multiple depths. Several statistics, including nobs are included in separate files, along with two "mask" files.

Usage Restrictions

  • None

Caveats

  • None

Citation

  • Please note: If you acquire NODC World Ocean Atlas 1998 data products from PSL, we ask that you acknowledge us in your use of the data. This may be done by including text such as NODC World Ocean Atlas 1998 data provided by the NOAA PSL, Boulder, Colorado, USA, from their website at https://psl.noaa.gov in any documents or publications using these data. We would also appreciate receiving a copy of the relevant publications. This will help PSL to justify keeping the data freely available online in the future. Thank you!