Class: ECMWF Re-Analyses
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| Grib Code | Mars Abbreviation | Long Name |
| 3 | er | 15 years reanalysis (ERA15) |
| 5 | e4 | 40 years reanalysis (ERA40) |
| 14 | ei | ERA Interim |
| 21 | em | ERA-CLIM model integration for the 20th-century (ERA-20CM) |
| 22 | e2 | ERA-CLIM reanalysis of the 20th-century using surface observations only (ERA-20C) |
| 24 | ep | ERA-CLIM2 coupled reanalysis of the 20th-century (CERA-20C) |
| 30 | et | ERA-CLIM2 coupled reanalysis of the satellite era (CERA-SAT) |
| 47 | o6 | Ocean ReAnalysis 6 |