Urs Marti is a geodesist at the Swiss Federal Office of Topography swisstopo since 1993. He studied geodesy at ETH Zurich and wrote his PhD thesis about the geoid determination in Switzerland. He is a specialist in gravity field modeling. He is the vice president of the Swiss Geodetic Commission and is active in various international organizations and projects. From 2011-2015 he was president of Commission 2 “Gravity Field” of the international Association of Geodesy (IAG).