HYCOM + NCODA Global 1/12° GOFS 3.1 41-layer Analysis (GLBv0.08 Experiment 9X.X)

The HYCOM Consortium provides a gridded analysis product based on Hybrid Coordinate ocean Model (HYCOM) and the Navy Coupled Ocean Data Assimilation (NCODA). The GLBv0.08 grid was discontinued on 2020-Feb-18. For more recent output see GLBv0.08. We provide 0z daily snapshots for the following experiments:


expt_93.0 (Oct-01-2017 to Feb-18-2020 (forecast to Feb-25-2020)
expt_92.9 (Oct-01-2017 to Dec-31-2017)

Data Assimilation

The system uses the Navy Coupled Ocean Data Assimilation (NCODA) system (Cummings, 2005; Cummings and Smedstad, 2013) for data assimilation. NCODA uses the 24-hour model forecast as a first guess in a 3D variational scheme and assimilates available satellite altimeter observations, satellite, and in-situ sea surface temperature as well as in-situ vertical temperature and salinity profiles from XBTs, Argo floats and moored buoys. Surface information is projected downward into the water column using Improved Synthetic Ocean Profiles (Helber et al., 2013).

What are the major differences between GOFS 3.1 & GOFS 3.0?

Note: Thia dataset is enormous. Please download small volumes at a time.

Disclaimer:

This dataset is created at NRL and provided "as is".

References

Variables
SSH (m), eastward velocity (m/s), northward velocity (m/s), temperature (not potential temperature) (°C), and salinity (psu).
Zonal Global by varies
Meridional 0.08° resolution between 40°S and 40°N, 0.04° poleward of these latitudes
Vertical 0, 2, 4, 6, 8, 10, 12, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100, 125, 150, 200, 250, 300, 350, 400, 500, 600, 700, 800, 900, 1000, 1250, 1500, 2000, 2500, 3000, 4000, 5000 m and at bottom 
Temporal Oct 1, 2017 to Feb 18, 2020 + 7 day forecasts: daily snapshot at 0Z; There are missing dates
Static? yes
Volume >1.5 Tb/year
Server public:
Source HYCOM Consortium 
Acquired Dec 3, 2018 (Last update Feb 2020)
APDRC contact
Supplements Global Ocean Forecasting System (GOFS) 3.1 website