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Naval Research Laboratory

HYCOM Consortium for Data-Assimilative Ocean Modeling

GOFS 3.0
Real-time 1/12° Global HYCOM Nowcast/Forecast System

Mean plots

Time line of experiment numbers



Global Ocean Forecast System (GOFS) 3.0



Experiment Number


Date of Update











09 SEP 2010


NOGAPS atmospheric forcing, NCODA mvoi





27 FEB 2013


NOGAPS atmospheric forcing, NCODA 3dvar




20 AUG 2013


NAVGEM 1.1 atmospheric forcing, NCODA 3dvar






08 APR 2014


NAVGEM 1.2 atmospheric forcing, NCODA 3dvar


Disclaimer: A numerical instability started to develop in the equatorial Atlantic Ocean on May 10, 2014. This was caused by the NCODA-3DVAR analysis not being able to converge to the correct solution. Because profiles are assimilated more than once, the instability persisted for some days. A correction to NCODA was implemented on May 20th.

System information

Click on the ocean of interest to see regional plots

Atlantic Ocean    Indian Ocean    Pacific Ocean    Polar Oceans    Global

Comparison with in situ data

NCODA Observations

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