@conference{Rajner2015_iugg,

author	=	{Rajner, Marcin},
title	=	{Use of numerical weather models for atmospheric gravity corrections in terrestrial gravity measurements},
eventdate	=	{2015-06-22/2015-07-02},
date	=	{2015-06-30},
month	=	{jun},
year	=	{2015},
venue	=	{Praskie Centrum Konferencyjne, 5. kvetna 65 140 00 Praga 4},
address	=	{Prague, Czech Republic},
eventtitle	=	{26th General Assembly of the International Union of Geodesy and Geophysics},
eventtitleaddon	=	{Earth and Environmental Sciences for Future Generations},

}

The atmosphere is the main source of noise in high precision terrestrial gravity measurements. Usually we can deal with this phenomena by means of local pressure recordings utilizing simple atmosphere models or standard or site dependent admittance factors. Despite of their great simplicity this method performs very well. As this methods do not reflect the physical phenomena of atmosphere impact on gravity they limit the accuracy of high precision superconducting and ballistic gravimetric measurements. This can be important obstacle in terms of interpretation of subtle geodynamic processes. We present here not yet very well known so-called 3D atmosphere modelling with minor improvements using recent numerical weather models. The calculation of gravity corrections using this advanced method is verified using large data set of superconducting gravimeter data. The improvement of atmospheric corrections is confirmed with reduced gravity residuals (in time and frequency domain), better agreement of tidal gravimetric factors (mainly for long-period awes) and polar motion gravimetric factor with values predicted with Earth models. Within this work the on-line service for computing 3D atmospheric gravity measurements is also presented.