DFG SPP1257 JIGOG

15.Apr.2009 - 14.Apr.2011

Roelof Rietbroek

Within the JIGOG project we develop a strategy to consistently combine data from the satellite mission GRACE, permanent GPS stations and simulations from FESOM (Finite Element Sea Ice-Ocean Model) with the aim of retrieving temporal mass transfers on the Earths surface. Measuring these mass redistributions is crucial as they reflect phenomena in terrestrial water storage, ice sheets, the atmosphere and the ocean. The exchange between the Earth's major mass compartments is currently largely unknown and the retrieval by single techniques are accompanied by data-specific disadvantages. Our combination approach, using least squares techniques, allows for better accuracy, a higher temporal resolution, and it addresses data-specific problems. Our results therefore contribute to the current knowledge of global mass transport on the surface of the Earth.