Chapter

Atmospheric Effects in Space Geodesy

Part of the series Springer Atmospheric Sciences pp 137-157

Date:

Atmospheric Pressure Loading

  • Dudy D. WijayaAffiliated withGeodesy Research Group, Institute of Technology Bandung Email author 
  • , Johannes BöhmAffiliated withDepartment of Geodesy and Geoinformation, Vienna University of Technology
  • , Maria KarbonAffiliated withSection 1.1 GPS/Galileo Earth Observations, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences
  • , Hana KràsnàAffiliated withDepartment of Geodesy and Geoinformation, Vienna University of Technology
  • , Harald SchuhAffiliated withDepartment 1 Geodesy and Remote Sensing, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences

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Abstract

Loading of the Earth’s crust due to variations of global atmosphere pressure can displace the positions of geodetic sites by more than 1 cm both vertically and horizontally on annual to sub-diurnal time scales, and thus has to be taken into account in the analysis of space geodetic observations. This part of the book discusses methods for the calculation of the displacements. In particular, it summarizes the simple approach with regression coefficients between surface pressure and the vertical displacement and the more rigorous geophysical approach with load Love numbers and Green’s functions. Furthermore, we describe the special treatment of the thermal tides (S1 and S2), the importance of the reference pressure, as well as the inverted barometer hypothesis for the oceans. Finally, we present space geodetic results with the application of those correction models for the analysis of Very Long Baseline Interferometry observations.