Correcting Gravimeters and Tiltmeters for Atmospheric Mass Attraction using Operational Weather Models

T. Klügel , H. Wziontek

The Newtonian attraction of the atmosphere is a major source of noise in precise gravimetric measurements. A major part of the effect is eliminated using local air pressure records and constant admittance factors. However, vertical mass shifts under constant surface pressure or distant pressure anomalies are not covered by this technique although they affect the gravimeter. In order to improve the atmospheric correction and to evaluate the horizontal components of attraction as well, the Newtonian attraction is computed based on the spatial density distribution derived from three-dimensional weather models.

Mots clés: Gravimeter; tiltmeter; atmospheric attraction; weather models

T. Klügel, H. Wziontek. Correcting Gravimeters and Tiltmeters for Atmospheric Mass Attraction using Operational Weather Models. Journal of Geodynamics, 2009, 48 (3-5), pp.204. ⟨10.1016/j.jog.2009.09.010⟩. ⟨hal-00594429⟩