Geocenter Motion from a Combination of GRACE Data and JTRF-like Solutions

Claudio Abbondanza1, Toshio Michael Chin1, Richard S Gross1, Michael B Heflin2, Jay W Parker3, Benedikt Soja1 and Xiaoping Wu1, (1)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States, (2)Jet Propulsion Lab, Pasadena, CA, United States, (3)NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States