High-Resolution Grids of Gravitational Gradients from GOCE
Sebera, Josef¹; Novak, Pavel¹; Valko, Milos¹; Sprlak, Michal¹; Baur, Oliver²; Tsoulis, Dimitrios³; Martinec, Zdenek⁴; Sneeuw, Nico⁵; Vermeersen, Bert⁶; van der Wal, Wouter⁶; Bouman, Johannes⁷; Fuchs, Martin⁷; Haagmans, Roger^8
1New Technologies for Information Society, Faculty of Applied Sciences, University of West Bohemia, CZECH REPUBLIC; ²Austrian Academy of Sciences, Space Research Institute, AUSTRIA; ³Aristotle University of Thessaloniki, Department of Geodesy and Surveying, GREECE; ⁴Dublin Institute for Advanced Studies, Geophysics Section, IRELAND; ⁵University of Stuttgart, Institute of Geodesy, GERMANY; ⁶echnical University Delft, Astrodynamics and Space Missions, NETHERLANDS; ⁷Deutsches Geodätisches Forschungsinstitut, GERMANY; ⁸European Space Agency, NETHERLANDS

Based on reprocessed GOCE gravitational gradients, that are spectrally filled in with a long-wavelength signal from GRACE/GOCE models, we provide global grids of gravitational gradients in the local north-oriented frame. These grids have the equiangular resolution of 30 arc-min that correspond to 360 in terms of spherical harmonic degree. The signal content of the data grids is analyzed with respect to that provided by state-of-the-art GRACE/GOCE Earth gravitational models. Grids of gravitational gradients reduced for effects of topographic, sea water, continental ice as well as sediments and crustal layers can be then used for geodetic and geophysical applications. These data products represent a particular output from the STSE GOCE+ Theme 2 project "Towards a better understanding of the Earth's interior and geophysical exploration research" funded by ESA.