HYCOM + NCODA Global 1/12° GOFS 3.1 41-layer Reanalysis (GLBv0.08 Experiment 53.X): daily snapshot at t000

The HYCOM Consortium provides a gridded reanalysis product based on Hybrid Coordinate ocean Model (HYCOM) and the Navy Coupled Ocean Data Assimilation (NCODA).



Experiments:
53.0 (Jan 1, 1994 to Mar 31, 1999)
53.1 (Apr 1, 1999 to Dec 31, 2000)
53.2 (Jan 1, 2001 to Jun 30, 2003)
53.3 (Jul 1, 2003 to Jun 30, 2005)
53.4 (Jul 1, 2005 to Jun 30, 2007)
53.5 (Jul 1, 2007 to Jun 30, 2009)
53.6 (Jul 1, 2009 to Jun 30, 2011)
53.7 (Jul 1, 2011 to Jun 30, 2013)
53.8 (Jul 1, 2013 to Dec 30, 2014)
53.9 (Jan 1, 2015 to Dec 30, 2015)

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

Disclaimer:

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

References

Interpolated Daily Snapshot:

The original dataset is missing almost six hundred t000 output. If t000 is missing and the t021 data from the day before and the t003 data exist the mean of the two is provided in the "Interpolated daily snapshot". The new dataset still contains 17 missing days:


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 Jan 1, 1994 to Dec 30, 2015: daily snapshot at 0Z; There are missing dates.
The Interpolated Daily Snapshot reduces the missing dates to 17 days
Static? yes
Volume >1.5 Tb/year
Server public:
Source HYCOM Consortium 
Acquired May 22, 2018 (updated Feb 2019)
APDRC contact
Supplements Global Ocean Forecasting System (GOFS) 3.1 website