News
2026/07/28: gap in MPIOM
A gap is currently present in the non-tidal ocean loading effects from MPIOM from 2026060121 to 2026062100. The gap will be closed soon.2026/06/30: All data gaps filled!
All data gaps present in the atmospheric time series have been solved. These include: 2016010100, 2025103100 to 2025110121, and 2026060300 to 2026060321. A continous time series is now available.2026/02/01: New paper available
An analysis on the application of Atmacs to correct absolute gravity measurements is now available. For more details see:Antokoletz, E.D., Wziontek, H., Klügel, T., Gebauer, A., Balidakis, K., Dobslaw, H. (2026). On the Application of the Atmospheric Attraction Computation Service (Atmacs) in Absolute Gravimetry. In: Freymueller, J.T., Sánchez, L. (eds) International Symposium on Gravity, Geoid and Height Systems 2024 (GGHS2024). GGHS 2024. International Association of Geodesy Symposia, vol 158. Springer, Cham. https://doi.org/10.1007/1345_2025_300
2025/11/20: Data gap
Due to an internal problem, we currently have a gap in the Atmacs time series between 2025103021 and 2025110200. We are working to solve this issue soon!2025/09/12: New paper available
A comparison was performed between atmospheric and non-tidal ocean loading corrections from Atmacs and the EOST Loading Service. For more details see:Antokoletz, E.D., Boy, JP., Wziontek, H. et al. Comparison of Atmospheric and Non-tidal Ocean Loading Corrections for High-Precision Terrestrial Gravity Time Series. Pure Appl. Geophys. (2025). https://doi.org/10.1007/s00024-025-03804-0
2025/02/05: Sign change in NTOL
In order to keep the same sign convention as it is for the atmospheric corrections, the sign of the non-tidal ocean loading (NTOL) corrections was inverted for all time series. Now the convention is the same one as it is for the atmospheric corrections.2024/04/26: Operational implementation of non-tidal ocean loading effects
Non-tidal ocean loading (NTOL) effects have been implemented in the operational routine of Atmacs. These are based on an ocean simulation of the Max-Planck-Institute Ocean Model (MPIOM) forced by atmospheric data from the Operational ECMWF model. NTOL effects are computed with the SPOTL software in collaboration with GFZ and are available since the epoch 2000-01-01 with a time resolution of 3-hours and for all stations.2023/07/01: New updates in the atmospheric computation scheme
The routine operation of Atmacs has been resumed. A revision of the loading effects over oceans has been performed allowing to further reduce the variability of gravity residuals recorded with superconducting gravimeters, also improving the compatibility with non-tidal ocean models.Main improvements:
- The Inverse Barometer assumption is now consistently implemented, considering the compensating Newtonian attraction effect of the oceans to atmospheric pressure changes.
- The ocean mass conservation has been included in the computation of deformation effects.
- A detailed land-sea mask was implemented, also accounting for major lakes.
For more details see:
Antokoletz, ED, Wziontek, H, Dobslaw, H, Balidakis, K, Klügel, T, Oreiro, FA, Tocho, CN (2023). Combining atmospheric and non-tidal ocean loading effects to correct high precision gravity time-series, Geophysical Journal International, Volume 236, Issue 1, January 2024, Pages 88-98, https://doi.org/10.1093/gji/ggad371
Previous updates:
- 2023/06/01:
Due to the change in the amount of layers of the ICON-models, a gap in the time series was existing between 2022/11/23 00:00 and 2022/12/18 00:00. The gap has now been solved. - 2023/02/15:
The routine computation of ICON-EU was interrupted. From now on, only atmospheric corrections based on the global solution of ICON-models are provided. - 2023/01/20:
Problems with the new datasets have been discovered. Please don't use results from 2022/11/23 and later. They will be recomputed as soon as we have solved the problem. - 2022/11/23: Changes for ICON-models, extending from 90 to 120 layers for the global model and from 60 to 74 for ICON-EU.