How to Climb the Gravity Wall -- Strategies for Precise Orbit Determination of Low Earth Orbiters Using the GPS -- Aiming at a 1-cm Orbit for Low Earth Orbiters: Reduced-Dynamic and Kinematic Precise Orbit Determination -- Space-Wise, Time-Wise, Torus and Rosborough Representations in Gravity Field Modelling -- Gravity Field Recovery From GRACE: Unique Aspects of the High Precision Inter-Satellite Data and Analysis Methods -- Global Gravity Field Recovery Using Solely GPS Tracking and Accelerometer Data from CHAMP -- The Processing of Band-Limited Measurements: Filtering Techniques in the Least Squares Context and in the Presence of Data Gaps -- Long Wavelength Sea Level and Solid Surface Perturbations Driven by Polar Ice Mass Variations: Fingerprinting Greenland and Antarctic Ice Sheet Flux -- Benefits From GOCE within Solid Earth Geophysics -- The Potential of GOCE in Constraining the Structure of the Crust and Lithosphere from Post-Glacial Rebound -- Deep and Shallow Solid-Earth Structures Reconstructed with Sequential Integrated Inversion (SII) of Seismic and Gravity Data -- Present-Day Sea Level Change: Observations and Causes -- Global Ocean Data Assimilation and Geoid Measurements -- Resolution Needed for an Adequate Determination of the Mean Ocean Circulation from Altimetry and an Improved Geoid -- Error Characteristics Estimated from CHAMP, GRACE and GOCE Derived Geoids and from Satellite Altimetry Derived Mean Dynamic Topography -- Estimating the High-Resolution Mean Sea-Surface Velocity Field by Combined Use of Altimeter and Drifter Data for Geoid Model Improvement -- Combined Use of Altimetry and In Situ Gravity Data for Coastal Dynamics Studies -- Feasibility, and Contribution to Ocean Circulation Studies, of Ocean Bottom Pressure Determination -- Impact of Geoid Improvement on Ocean Mass and Heat Transport Estimates -- How Operational Oceanography can Benefit from Dynamic Topography Estimates as Derived From Altimetry and Improved Geoid -- Remarks on the Role of Height Datum in Altimetry-Gravimetry Boundary-Value Problems -- Ocean Tides In GRACE Monthly Averaged Gravity Fields -- Tidal Models in a New Era of Satellite Gravimetry -- The Elusive Stationary Geoid -- Geodetic Methods for Calibration of GRACE and GOCE -- Benefits of GRACE and GOCE to Sea Level Studies -- What Might GRACE Contribute to Studies of Post Glacial Reboud? -- Measuring the Distribution of Ocean Mass Using GRACE -- Monitoring Changes in Continental Water Storage with GRACE -- Attitude and Drag Control: An Application to the GOCE Satellite -- On Superconductive Gravity Gradiometry in Space -- Satellite-Satellite Laser Links for Future Gravity Missions -- Possible Future Use of Laser Gravity Gradiometers -- MICROSCOPE Instrument Development, Lessons for GOCE -- Needs and Tools for Future Gravity Measuring Missions -- GOCE: ESA's First Earth Explorer Core Mission -- Earth Gravity Field From Space - From Sensors to Earth Sciences: Closing Remarks -- Author Index -- List of Participants.