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Table 1 The main differences between ERA5 and ERA operational reanalysis (Hersbach et al. 2020)

From: Troposphere delay modeling in SLR based on PMF, VMF3o, and meteorological data

Model

ERA5

ECMWF-op

Period

1979–present

1979–present

Horizontal resolution

0.3° × 0.3°

1° × 1°

Vertical resolution

137 levels to 0.01 hPa

25 levels to 0.01 hPa

Temporal resolution

1 h

6 h