Comparison Table of Ocean Reanalyses: Global
| Dataset | Yyears | resolution | levels | model |
| NCEP/GODAS | 1980-present | Horizontal 1°x1° (1/3° meridional at the tropics) | MOMv3 | |
| NASA ECCO | 1993-2017? | 1x1 10 in top 10 | 50 | MITgcm and MOM4 |
| BLUELINK | 1992-2008 | ? | 47 | MOM4 + Chen hybrid mixed layer |
| CMCC C-GLORS | 1980-2015 | Horizontal 1/4°x1/4° (ORCA025 tripolar grid) | 50 | NEMO V3.2 + LIM2 |
| CMCC CHOR (Historical Reanalysis) | 1900-2010 | Horizontal 1/2°x1/2° (ORCA05 tripolar grid) | 75 | NEMO V3.4 + LIM2 |
| NCEP CFSR | 1979-near present |
Horizontal .25 near the equator; 0.5 beyond the tropics |
40 | GODAS w/MOM4 |
| ECMWF ORAS5 | 1979-near present |
Horizontal 1/4°x1/4° about 1m level thickness in upper 200 m. |
75 | NEMO V3.4.1 |
| ECMWF ORAS4 | 1958-? |
Horizontal 1°x1° with equatorial refinement (0.3) about 10m level thickness in upper 200 m. |
42 | NEMO V3.0 |
| GECCO | 1952-2001 | Horizontal 1°x1° | 23 | MITgcm |
| GECCO2 | 1948-2014 | 1x1/3° | 50 | MITgcm |
| GFDL | 1961-2012 | Global Tripolar grid (360 by 200), | 50 | ECDA |
| GLORYS2V4 | 1993-2016 | Global, 1/4° Mercator grid.1m top level, 200m bottom level |
75
|
Mercator Océan / Copernicus Marine Environment Service (CMEMS) |
| GMAO | 1980-present |
1/2° Ocean, 1° Atmosphere |
? |
GEOS AGCM, MOM4p, CICE |
| INCOIS-GODAS | 2004-almost real time | 0.5 deg in the zonal direction. In the meridional direction it is 0.25 between 10S-10N and 0.5 poleward 30 | 40 | MOM4.0 |
| SODA | ?? | Horizontal 0.25°x0.25o at the equator reducing to <10km in the Arctic | 50 | MOM5 |
| TOPAZ | 1992-2016 | Horizontal 12km in the Arctic to <16 km in North Atlantic | 28 | HYCOM v2.2, CICE v3 |
| U of Reading UR025.3 | ?? | 1/4o | 46 | NEMO coupled ice-ocean model v2.3 |
| U of Reading UR025.4 | 1989-2010 | 1/4o | 75 | NEMO coupled ice-ocean model v3.2 |
| BRAN2020 | 1993-2020 |