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| Titel |
ATMACS - Atmospheric Attraction Computation Service basing on operational Weather Models |
| VerfasserIn |
Thomas Kluegel, Hartmut Wziontek |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250056090
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| Zusammenfassung |
| In the analysis of gravimetric time series the atmospheric correction is usually done by using the local air pressure record. Although up to 90-95 % of the atmospheric signal can be reduced in this way, modern superconducting gravimeters require an even better atmospheric correction if small signals are to be identified. The 3-dimensional modelling of atmospheric mass attraction based on operational weather models has shown to improve the correction.
Atmacs is a service to provide time series of atmospheric vertical mass attraction computed on the basis of weather models of the German Weather Service (DWD), the regional model COSMO-EU and the global model GME. The attraction time series having a temporal resolution of 6 hours are updated daily. A simple loading model based on a Green’s functions approach is also provided. Recently 13 European stations of the Global Geodynamics Project (GGP) are included in the automated computation routine. The integration of non-European stations is in preparation.
Furthermore, for an arbitrary station located within the limits of the regional model, attraction time series for a limited time interval can be computed on request. This option is designed for absolute gravity measurements which are usually carried out within a limited time interval.
The service is open to the public under http://atmacs.bkg.bund.de |
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