James R Kellner¹, John David Armston², Laura Duncanson³, J Bryan Blair⁴, Jamis Bruening⁵, Tiago de Conto², Steven Hancock⁶, Sean Healey⁷, Michelle A Hofton⁸, Amelia Holcomb⁹, Veronika Leitold⁹, Scott B Luthcke¹⁰, Joseph Mascaro¹, David Minor², Adrian Pascual¹¹, Luke Wertis¹², Lin Xiong¹³ and Ralph Dubayah², (1)Brown University, Providence, RI, United States, (2)University of Maryland, Department of Geographical Sciences, College Park, United States, (3)University of Maryland College Park, College Park, MD, United States, (4)NASA Goddard Space Flight Center, Greenbelt, United States, (5)University of Maryland College Park, Geographical Sciences, College Park, MD, United States, (6)University of Edinburgh, School of Geosciences, Edinburgh, United Kingdom, (7)Rocky Mountain Research Station Ogden, Ogden, United States, (8)Univ Maryland College Park, College Park, United States, (9)University of Maryland College Park, College Park, United States, (10)NASA Goddard Space Flight Center, Geodesy and Geophysics Laboratory, Greenbelt, MD, United States, (11)University of Maryland College Park, Geography, College Park, MD, United States, (12)University of Maryland College Park, Geographical Sciences, College Park, United States, (13)University of Houston, Houston, TX, United States