Regional Validation and Combination of GOCE Gravity Field Models and Terrestrial Data
High-precision terrestrial gravity field data sets in Germany and Europe are utilized to validate recent global gravity field models (GGMs), emphasizing the progress with respect to the latest GOCE GGM releases. The agreement between the release 3 GOCE GGMs and terrestrial data up to degree and order 200 is about 5.5 cm for height anomalies, 1.7 mGal for gravity anomalies, and 0.55" for vertical deflections, respectively, being fully compatible with the relevant error estimates. Furthermore, results from the combination of the GOCE GGMs with terrestrial gravity data in Europe sets are outlined, showing that especially the release 3 GGMs adequately represent the long wavelength gravity field structures, with further improvements expected from the next GGM releases.
KeywordsGravity Field Gravity Anomaly Vertical Deflection Gravity Field Model Spherical Harmonic Degree
The project REAL GOCE is part of the R&D-Programme GEOTECHNOLOGIEN, funded by the German Ministry of Education and Research (BMBF) and the German Research Foundation (DFG), Grant (03G0726C) of project REAL GOCE.
- Denker H (2013) Regional gravity field modelling: theory and practical results. In: Xu G (ed) Sciences of geodesy II, Springer, Berlin, pp 185–291Google Scholar
- Ihde J, Wilmes H, Müller J, Denker H, Voigt C, Hosse M (2010) Validation of satellite gravity field models by regional terrestrial data sets. In: System earth via geodetic-geophysical space techniques (Advanced Technologies in Earth Sciences), pp 277–296Google Scholar
- Pail R, Bruinsma S, Migliaccio F, Förste C, Goiginger H, Schuh WD, Höck E, Reguzzoni M, Brockmann JM, Abrikosov O, Veicherts M, Fecher T, Mayrhofer R, Krasbutter I, Sansò F, Tscherning CC (2011) First GOCE gravity field models derived by three different approaches. J Geod 85:845–860CrossRefGoogle Scholar
- Shako R, Förste C, Abrikosov O, Bruinsma S, Marty JC, Lemoine JM, Flechtner F, Neumayer H, Dahle C (2013) EIGEN-6C—a high-resolution global gravity combination model including GOCE data, Chap. 20. In: Observation of the System Earth from Space - CHAMP, GRACE, GOCE and future missionsGoogle Scholar
- Voigt C, Denker H (2012) Validation of second-generation GOCE gravity field models by astrogeodetic vertical deflections. IAG Symp. 139 (accepted)Google Scholar