World Ocean Atlas (WOA09)

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World Ocean Atlas (WOA09)
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World Ocean Atlas 2009 (WOA09) is a set of objectively analyzed (1 degree grid) climatological fields of in situ temperature, salinity, dissolved oxygen, Apparent Oxygen Utilization (AOU), percent oxygen saturation, phosphate, silicate, and nitrate at standard depth levels for annual, seasonal, and monthly compositing periods for the World Ocean. It also includes associated statistical fields of observed oceanographic profile data interpolated to standard depth levels on both 1 degree and 5 degree grids. Non-gridded data are also available.

Please cite data sources, following the data providers' instructions
Dataset DOIs
Hosted Climate Index Files
Usage Restrictions

Cite this page

Acknowledgement of any material taken from or knowledge gained from this page is appreciated:

National Center for Atmospheric Research Staff (Eds). Last modified "The Climate Data Guide: World Ocean Atlas (WOA09).” Retrieved from on 2024-05-19.

Citation of datasets is separate and should be done according to the data providers' instructions. If known to us, data citation instructions are given in the Data Access section, above.

Acknowledgement of the Climate Data Guide project is also appreciated:

Schneider, D. P., C. Deser, J. Fasullo, and K. E. Trenberth, 2013: Climate Data Guide Spurs Discovery and Understanding. Eos Trans. AGU, 94, 121–122,

Key Figures

World Ocean Atlas: Dec-Jan_Feb seasonal mean of dissolved oxygen at the surface. (Climate Data Guide; D. Shea)

World Ocean Atlas: Dec-Jan_Feb seasonal mean of dissolved oxygen at a depth of 50 meters. (Climate Data Guide; D. Shea)

Other Information

Years of record
Data time period extended
Yes, data set is extended
Climatology, Monthly, Seasonal, Annual
Input Data


Vertical Levels:
Missing Data Flag
Ocean or Land
Ocean Only
Spatial Resolution

1x1, 5x5

Model Resolution (reanalysis)
Data Assimilation Method
Model Vintage (reanalysis)

Key Publications
Not available...