Combining GRACE and Altimetry to solve for present day mass changes and GIA

Roelof Rietbroek1, Christina Lück2, Bernd Uebbing1, Juergen Kusche1 and Matt A King3, (1)University of Bonn, Institute of Geodesy and Geoinformation, Bonn, Germany, (2)University of Bonn, Institute of geodesy and geoinformation, Bonn, Germany, (3)University of Tasmania, Surveying and Spatial Sciences, School of Land and Food, Hobart, TAS, Australia