GOCE+ Height System Unification with GOCE
The overall objective of the project is to demonstrate the feasibility of calculating heights and connecting height systems with GOCE products. There are nine objectives to be addressed in this study:
- To collect information and review the state-of-the-art in height systems and local/regional/global initiatives to unify height systems.
- To quantify the currently known differences (without a precise GOCE geoid) between height systems in Europe and other parts of the world based on available literature and existing results.
- To review, evaluate and improve methodology and/or existing algorithms for height determination and height system unification.
- To attempt global height unification and tide gauge unification for those parts of the world where the data sets are available.
- To select two test regions for height system unification and to demonstrate the benefit of using GOCE data for this purpose (to the resolution and accuracy of the new data).
- To assess the impact of a unified height system on local gravity information (systematic errors in local gravity anomalies and alike) and topographic heights and vice versa.
- To geophysically interpret height differences (compared to the GOCE geoid) at one or more tide gauges in terms of ocean dynamic topography and currents and to compare the results to altimetry.
- To involve local/national organisations maintaining height systems.
- To provide a roadmap for future work required to define a world height system and vertical datum exploiting GOCE data.