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:
- Many variables are created
Key Limitations:
- Salinity is not good
- Large biases in velocity fields
Technical Notes
Note that the net surface heat flux are the total surface heat flux from the NCEP reanalysis 2 plus the relaxation terms.
Years of Record
Timestep
Data Time Period Extended?
Domain
Spatial Resolution
Ocean or Land
Vertical Levels
Input Data
Data Access: Please Cite data sources, following the data providers' instructions.
- Saha, S. et al (2006): The NCEP Climate Forecast System. J. Climate, 19, 3483–3517.
- Behringer, D. W., and Y. Xue (2004), Evaluation of the global ocean data assimilation system at NCEP: The Pacific Ocean, Eighth Symposium on Integrated Observing and Assimilation System for Atmosphere, Ocean, and Land Surface, AMS 84th Annual Meeting, Was
- GODAS Introduction from CPC
- Nishida, T, (2011): Validation of the Global Ocean Data Assimilation System (GODAS) data in the NOAA National Centre for Environmental System (NCEP) by theory, comparative studies, applications and sea truth. IOTC-2011-WPB09-11