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