- Time series of 3D displacements caused by land water storage loading.
The time series are provided in three forms:
- Precomputed time series for 1272 VLBI, GPS, SLR, and DORIS stations.
- Precomputed time series at a regular 2′ × 2′ global grid.
- On-demand online pressure loading computation for an arbitrary point at the Earth.

Two time series of displacements are provided. The first variant is computed using land water storage pressure from the numerical weather model MERRA2 (Reichle et al., 2017) that is available from the GMAO (NASA Global Modeling and Assimilation Office). The second variant is computed land water storage pressure from the numerical weather model GEOS-FPIT also developed by the GMAO.

Model Resolution Date range Latency MERRA2 0.5 ° × 0.625 ° × 1 hour 1979.01.01 — present 20–50 days GEOS-FPIT 0.5 ° × 0.625 ° × 1 hour 2000.01.01 — present **6–15 hours**

- 3D displacements from MERRA2
(Reichle et al., 2017)
model at a regular 2′ × 2′ global grid
from 19800101_0000
through 20240301_2100
with time step of 3 hours.
**NB:**Diurnal, semi-diurnal, ter-diurnal and four-times-a-day variations are removed. Last modified on [an error occurred while processing this directive] UTCDisplacements in netCDF format to download. File size: 3.5–5.5 Mb per epoch, 14Gb/year (bzip2 compressed).

Auxiliary 3D displacements of the center mass of the total Earth with respect to the center mass of the solid Earth without atmosphere caused by atmospheric pressure loading. The sum of this displacement and the displacement wrt of the total mass, is the displacement with respect to the center of solid Earth, i.e. center of figure.

Displacements in netCDF format to download. File size: 790 Kb per epoch, 2.3Gb/year.

- 3D displacements from GEOS-FPIT model at a regular 2′ × 2′ global grid
from [an error occurred while processing this directive]
through [an error occurred while processing this directive]
with time step of 3 hours.
**NB:**Diurnal, semi-diurnal, ter-diurnal and four-times-a-day variations are removed. Last modified on [an error occurred while processing this directive] UTCDisplacements in netCDF format to download. File size: 4–6 Mb per epoch, 17.4Gb/year.

Auxiliary 3D displacements of the center mass of the total Earth with respect to the center mass of the solid Earth without atmosphere caused by atmospheric pressure loading. The sum of this displacement and the displacement wrt of the total mass, is the displacement with respect to the center of solid Earth, i.e. center of figure.

Displacements in netCDF format to download. File size: 790 Kb per epoch, 2.3Gb/year.

- 3D displacements from MERRA2 model
(Reichle et al., 2017)
for 1272
space geodesy stations
from 19800101_0000
through 20240301_2100
with time step of 3 hours.
**NB:**Diurnal, semi-diurnal, ter-diurnal and fut-times-a-day variations are removed. Last modified on 20240323_0558 UTCDisplacements in EPHEDISP format to download. File size: 227 Kb per epoch, 0.33Gb/year.

Auxiliary 3D displacements of the center mass of the total Earth with respect to the center mass of the solid Earth without atmosphere caused by atmospheric pressure loading. The sum of this displacement and the displacement wrt of the total mass, is the displacement with respect to the center of solid Earth, i.e. center of figure.

Displacements in netCDF format to download. File size: 227 Kb per epoch, 0.33Gb/year.

- 3D displacements from GEOS-FPIT model for 1272
space geodesy stations
from 20000101_0030
through 20240416_1830
with time step of 3 hours.
**NB:**Diurnal, semi-diurnal, ter-diurnal and for-times-a-day variations are removed. Last modified on 20240417_0322 UTC.Displacements in EPHEDISP format to download. File size: 227 Kb per epoch, 0.66Gb/year.

Displacements in netCDF format to download. File size: 227 Kb per epoch, 0.66Gb/year.

- 3D harmonic displacement variations from MERRA2 model at a regular
2′ × 2′ global grid
Computed over the range of 37 years [1980.01.01, 2017.02.20]
They include displacements at 8 diurnal and semi-diurnal frequencies
Displacements in NetCDF format are available for downloading.

Displacements in HEB format are available for downloading as well.

Auxiliary 3D land water storae displacements of the center mass of the total Earth with respect to the center mass of the solid Earth without land water. The sum of this displacement and the displacement wrt of the total mass, is the displacement with respect to the center of solid Earth, i.e. center of figure.Displacements in NetCDF format are available for downloading.

Displacements in HEB format are available for downloading as well. - 3D harmonic displacement variations from GEOS-FPIT model at
a regular 2′ × 2′ global grid.
Computed over the range of 17 years [2000.01.01, 2017.02.20]
They include displacements at 18 diurnal, semi-diurnal, ter-diurnal,
and four-times-a-day frequencies.
Displacements in NetCDF format are available for downloading.

Displacements in HEB format are available for downloading as well.

Auxiliary 3D land water storae displacements of the center mass of the total Earth with respect to the center mass of the solid Earth without land water. The sum of this displacement and the displacement wrt of the total mass, is the displacement with respect to the center of solid Earth, i.e. center of figure.

Displacements in HEB format are available for downloading as well. - 3D harmonic displacement variations from MERRA2 model for
1272
space geodesy sites.
The variations were computed over the range of 36 years
[1979.09.01, 2015.01.01]. They include displacements at 8 diurnal
and semi-diurnal frequencies.
Displacements in format are available for downloading.

Auxiliary 3D land water storae displacements of the center mass of the total Earth with respect to the center mass of the solid Earth without land water. The sum of this displacement and the displacement wrt of the total mass, is the displacement with respect to the center of solid Earth, i.e. center of figure.Displacements in NetCDF format are available for downloading.

- 3D harmonic displacement variations from GEOS-FPIT model for
1272
space geodesy sites.
The variations were computed over the range of 18 months
[2000.01.01, 2017.02.20]. They include displacements at 18 diurnal,
semi-diurnal, ter-diurnal, and four-times-a-day frequencies.

Auxiliary 3D land water storae displacements of the center mass of the total Earth with respect to the center mass of the solid Earth without land water. The sum of this displacement and the displacement wrt of the total mass, is the displacement with respect to the center of solid Earth, i.e. center of figure. Displacements in format are available for downloading.

` Station_name
X-coordinate Y-coordinate Z-coordinate
`

Station name should have no more than 8 characters. X,Y,Z are carthesian coordinates of the station of interest in a crust-fixed coordinates system. Units are meters. Here is an example.

Results of on-demand computations are accessible from here.

Back to the International Mass Loading Service.

Last update: 2020.05.27_15:19:01