Table 1 Summary of the non-tidal loading data sets compared in this study
From: Comparison of non-tidal loading data for application in a secular terrestrial reference frame
GCTI20 | ESMGFZ | |
|---|---|---|
Atmospheric model | ECMWF ERA5 | ECMWF ERA-40, ERA-interim, Operational ECMWF |
Oceanic model | TUGO-m | MPIOM |
Hydrological model | ECMWF ERA5 | LSDM |
Mass conservation | Included in single components | Separated as sea level loading |
Spatial resolution | Selected sites | Global \(0.5 ^{\circ }\times 0.5 ^{\circ }\) grid |
Temporal resolution | 1 h | 3 h (atmosphere, ocean), 24 hours (hydrology, sea level) |
Data start epoch | 1979/01/01 (ERA5 IB & hydro), 1980/01/01 (ERA5 TUGO-m) | 1976/01/01 |
Update frequency | Every few months | Daily |
Frames | CM, CF | CM, CF |
Displacements | North, East, up | North, East, up |