Towards a Roadmap for Future Satellite Gravity Missions September 30 - October 2, 2009, Graz, Austria

Breakout Session B1 (Wednesday, September 30, 2009): Mission Requirements.
Co-Chairs: Bert Vermeersen, Victor Zlotnicki.
Rapporteur: Radboud Koop.
Session description:

Principle aim of this session is the development/update of the matrix of user requirements for static and temporal gravity information, including requirements for accuracy and spatial and temporal coverage. Basis for this will be Chapter 3, particularly Tables 3-1 and 3-2, of the 2007 Report on the Future of Satellite Gravimetry from the April 12 - 13 2007 ESTEC Workshop. Since then, progress has been made and problems have been recognized or identified in assessing the role played by long-term hydrological trends in GRACE data, joint studies on global mass transport (closing the global mass budget, coupling of geophysical models), on apparent deviations from long-term temporal trends in low-degree gravity components, separating glacial isostatic adjustment from ongoing climatic variations, post-seismic and tectonic trends, and others. These recent experiences and insights need to be translated into measurement requirements and incorporated in the updated matrix for future satellite gravity missions.