Holly Kyeore Han¹, Surendra Adhikari², Torsten Albrecht³, Jacqueline Austermann⁴, Lambert Caron⁵, Sam Chester⁶, Roger Creel⁷, Jeffrey Todd Freymueller⁸, Natalya A Gomez⁹, Erin Hightower¹⁰, Matthew J Hoffman¹¹, Pingping Huang¹², Erik Roman Ivins¹³, Volker Klemann¹⁴, Sam Kodama^15,16, Donghyuck Lee¹⁷, Tanghua Li¹⁸, Daniele Melini¹⁹, Glenn A. Milne²⁰, Frank Pattyn²¹, Riccardo Riva²², Giorgio Spada²³, Rebekka Steffen²⁴, Holger Steffen²⁴, Jan Swierczek-Jereczek²⁵, Lev Tarasov²⁶ and Shijie Zhong²⁷, (1)Jet Propulsion Laboratory, Pasadena, CA, United States, (2)California Institute of Technology, Jet Propulsion Laboratory, Pasadena, United States, (3)Potsdam Institute for Climate Impact Research (PIK), Potsdam, Germany, (4)Lamont-Doherty Earth Observatory of Columbia University, Palisades, United States, (5)Jet Propulsion Laboratory, Pasadena, United States, (6)Columbia University, Cambridge, MA, UNITED STATES, (7)Texas A& M University, Geology and Geophysics, College Station, United States, (8)Michigan State University, Earth and Environmental Sciences, East Lansing, MI, United States, (9)McGill University, Earth & Planetary Sciences, Montreal, QC, Canada, (10)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States, (11)Los Alamos National Laboratory, Fluid Dynamics and Solid Mechanics, Los Alamos, NM, United States, (12)School of Engineering, Newcastle University, Geospatial Engineering, Newcastle University, United Kingdom, (13)JPL/Caltech, Pasadena, United States, (14)GFZ German Research Centre, Dept. 1 Geodesy, Potsdam, Germany, (15)University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, CA, United States, (16)Columbia University, New York City, United States, (17)Seoul National University, Seoul, Korea, Republic of (South), (18)Earth Observatory of Singapore, Nanyang Technological University, Singapore, Singapore, (19)National Institute of Geophysics and Volcanology, Rome, Italy, (20)University of Ottawa, Department of Earth and Environmental Sciences, Ottawa, ON, Canada, (21)Université Libre de Bruxelles, Laboratoire de Glaciologie, Brussel, Belgium, (22)Delft University of Technology, Department of Geoscience and Remote Sensing, Delft, Netherlands, (23)Università degli Studi di Urbino “Carlo Bo”, Dipartimento di Scienze di Base e Fondamenti, Urbino, Italy, (24)Lantmäteriet, Gävle, Sweden, (25)Complutense University of Madrid, Madrid, Spain, (26)Memorial University of Newfoundland, St John's, Canada, (27)University of Colorado at Boulder, Department of Physics, Boulder, United States