GODAS: NCEP Global Ocean Data Assimilation System

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GODAS: NCEP Global Ocean Data Assimilation System
Main content

GODAS is a real-time ocean analysis and a reanalysis. It is used for monitoring, retrospective analysis as well as for providing oceanic initial conditions for the CFS. Both temperature and synthetic salinity profiles are assimilated in a 3DVAR scheme. Beginning with March 2007, altimetry sea level is assimilated.

Key Strengths

Key Strengths

Many variables are created

Key Limitations

Key Limitations

Salinity is not good

Large biases in velocity fields

Please cite data sources, following the data providers' instructions
Dataset DOIs
None
Hosted Climate Index Files
None
Usage Restrictions
None

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: GODAS: NCEP Global Ocean Data Assimilation System.” Retrieved from https://climatedataguide.ucar.edu/climate-data/godas-ncep-global-ocean-data-assimilation-system on 2024-06-18.


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, https://doi.org/10.1002/2013eo130001

Key Figures

Climate Data Guide: GODAS ocean current

GODAS ocean current Januarry 2009 at 5 meter depth. (Climate Data Guide; D. Shea)

Climate Data Guide: GODAS ocean current and salinity (India)

Ocean current and salinity for January, 2009 at 5 meter depth (India region). (Climate Data Guide; D. Shea)

Climate Data Guide: GODAS ocean current and salinity (Mediterranean). (Climate Data Guide; D. Shea)

Ocean current and salinity for January, 2009 at 5 meter depth (Mediterranean region).

Climate Data Guide: GODAS  potential temperature. (Climate Data Guide; D. Shea)

Ocean potential temperature for January, 2009 at 5 meter depth.

Climate Data Guide: GODAS geometric vertical velocity.

Geometric vertical velocity for January, 2009. A raster view is provided to facilitate visual view of the 40 level spacing. (Climate Data Guide; D. Shea)

Other Information

Years of record
to
Data time period extended
Yes, data set is extended
Timestep
Monthly, Pentad
Domain
Formats:
Input Data

3D-VAR: temperature & "synthetic" salinity profiles, Altimetry sea level (March 2007)

Vertical Levels:
Missing Data Flag
None
Ocean or Land
Ocean Only
Spatial Resolution

1x1, 0.333 latitude near equator, (40x418x360)

Model Resolution (reanalysis)
None
Data Assimilation Method
None
Model Vintage (reanalysis)
None

Key Publications
Not available...