Titlebook: Observation of the System Earth from Space - CHAMP, GRACE, GOCE and future missions; GEOTECHNOLOGIEN Scie Frank Flechtner,Nico Sneeuw,Wolf-

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Global Gravity Field Models from Different GOCE Orbit Productsth, but contains jumps like discontinuities in the calculated geometrical point-wise positions. This leads to a degradation of the gravity field solution about by a factor of two in terms of degree variances when compared to the solution from the official orbit product.

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Using Accelerometer Data as Observationsigated and compared to the conventional method. Benefits and disadvantages are discussed and the performance of the conventional and the new method is assessed in the context of gravity field recovery, for a simulated scenario and using real-world CHAMP and GRACE mission data.

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Real Data Analysis GOCE (REAL GOCE): A Retrospective Overviewd oceanographic processes may be modeled with much higher reliability by means of a high-precision GOCE gravity field, while a high-precision geoid will finally enable geodesists to unify and connect the heterogeneous national height reference systems.

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Identification and Reduction of Satellite-Induced Signals in GRACE Accelerometer Datasignals from ACC1A, downsampled that data to 1 Hz in order to obtain ACC1B data format and derived a gravity field with the use of our ACC1B dataset. The results appear to have a little, but visible effect of up to 2 cm equivalent water height onto the gravity field determined by GRACE.

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GOCE Gravity Gradients: Combination with GRACE and Satellite Altimetry as the dynamic ocean topography signal. A validation of GOCE using ERS-1 data shows that both data sets are consistent at levels where GOCE is sensitive. For high spatial resolutions below 40 km wavelength GOCE does not contribute, as expected.

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