Dr. D. Sarah Stamps, PhD¹, Karen Williams¹, James M Duda², Philippe Hensel³, William Moore⁴ and Ryan Hippenstiel⁵, (1)Virginia Tech, Department of Geosciences, Blacksburg, United States, (2)USGS Virginia Water Science Center, Richmond, United States, (3)NOAA, National Geodetic Survey, Silver Spring, United States, (4)Hampton University, Atmospheric and Planetary Sciences, Hampton, United States, (5)DroneDeploy, Chesapeake, United States

Michael G Bevis, Ohio State University Main Campus, Columbus, United States

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

Maxime Rousselet, Geosciences and Environment Toulouse, Toulouse, FRANCE, Alexandre Couhert, CNES/GET, Toulouse, France, Kristel Chanard, IGN Institut National de l'Information Géographique et Forestière, Paris, France, Pierre Exertier, Geosciences and Environment Toulouse, Toulouse, France and Luce Fleitout, Ecole Normale Supérieure Paris, Paris, France

Mila Lubeck, Massachusetts Institute of Technology, Earth Atmospheric and Planetary Sciences, Cambridge, MA, United States and Thomas Herring, Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States

Justyna Śliwińska-Bronowicz¹, Tatiana Solovey², Rafał Janica², Anna Stradczuk² and Agnieszka Brzezińska², (1)Centrum Badań Kosmicznych Polskiej Akademii Nauk (CBK PAN), Warsaw, Poland, (2)Polish Geological Institute - National Research Institute, Warsaw, Poland

Marcello Passaro, Christian Schwatke, Denise Dettmering, Michael Hart-Davis, Florian Seitz, Daniel Scherer and Felix Lucian Müller, Technical University of Munich, Deutsches Geodätisches Forschungsinstitut (DGFI-TUM), Munich, Germany

Na Wei, Wuhan University, GNSS Research Center, Wuhan, China and Yuxin Zhou, Wuhan University, GNSS Research Center, School of Geodesy and Geomatics, Wuhan, China

Sophie Coulson¹, Andrew Lloyd², Xiyuan Bao³, Jerry X Mitrovica⁴, Sönke Dangendorf⁵, Linda Pan⁶, Natasha Valencic⁴, Mark E Tamisiea⁷, David Al-Attar⁸ and Daniel Heathcotte⁸, (1)University of New Hampshire Main Campus, Durham, United States, (2)Columbia University, Lamont-Doherty Earth Observatory, New York, United States, (3)Harvard University, Department of Earth and Planetary Sciences, Cambridge, MA, United States, (4)Harvard University, Department of Earth and Planetary Sciences, Cambridge, United States, (5)Tulane University, Department of River-Coastal Science & Engineering, New Orleans, United States, (6)Princeton University, Program in Atmospheric and Oceanic Sciences, Princeton, United States, (7)Center for Space Research, University of Texas at Austin, Austin, United States, (8)University of Cambridge, Bullard Labs, Cambridge, United Kingdom

Kevin Gaastra, Donald F Argus and Felix W Landerer, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States

Ashley Sarah Bellas-Manley, University of Colorado Boulder, Smead Aerospace Engineering Sciences, Colorado Center for Astrodynamics Research, Boulder, United States, R Steven Nerem, Smead Aerospace Engineering Sciences, Colorado Center for Astrodynamics Research, University of Colorado Boulder, Boulder, CO, United States, Bryant D Loomis, NASA Goddard Space Flight Center, Geodesy and Geophysics Laboratory, Greenbelt, MD, United States and Michael J Croteau, NASA Goddard Space Flight Center, Geodesy and Geophysics Laboratory, Greenbelt, United States

Nina Miller, University of Nevada Reno, Reno, United States and Corne Kreemer, University of Nevada, Reno, Nevada Bureau of Mines and Geology, Reno, United States

Nadège Pie, Center for Space Research, Austin, TX, United States, Jennifer A Bonin, University of South Florida, St. Petersburg, FL, United States, Don P Chambers, University of South Florida, College of Marine Science, St. Petersburg, United States, Mark E Tamisiea, Center for Space Research, University of Texas at Austin, Austin, United States and Himanshu Save, The University of Texas at Austin, Center for Space Research, Austin, TX, United States

Yen-RU LAI, National Chung Hsing University, Department of Civil Engineering, Taichung, Taiwan and Ching,mei Tseng, NCHU National Chung Hsing University, Department of Civil Engineering, Taichung, Taiwan

Khosro Ghobadi-Far and Vidhyarth Thirumullaivoyal Santhanakumar, University of Colorado Boulder, Department of Aerospace Engineering Sciences, Boulder, United States

Benjamin Krichman, Center for Space Research, Austin, TX, United States

Isabella Velicogna¹, Geruo A¹, Tyler C Sutterley² and Chia Chun Liang³, (1)Department of Earth System Science, University of California, Irvine, United States, (2)University of California Irvine, Irvine, United States, (3)University of California Irvine, Irvine, CA, United States