1999. Ph.D. in Geography (Geomorphology and Quaternary Geology), Technische Universität Berlin, Germany.
1992/1990. M.S./B.S. in Geography (Geomorphology and Geoarcheology), minors in Biology and Geology, Freie Universität Berlin, Germany.
2023. Visiting Professor. Host: Instituto Tecnológico y de Estudios Superiores de Occidente (ITESO) - Universidad Jesuita de Guadalajara, Mexico.
2022-2023. Provost Fellow, University of Michigan-Dearborn, U.S.A.
2010-2011 & 2012. Research Fellow, Alexander von Humboldt Foundation, Germany. Host: Institute for Space Sciences, Freie Universität Berlin, Germany.
2010. Research Fellow, American Center for Mongolian Studies, U.S.A. Host: Institute of Geography, National University of Mongolia, Ulaanbaatar, Mongolia.
2004-2005. Chair, Mountain Geography Specialty Group of the American Association of Geographers (AAG), U.S.A.
2001-2002. Postdoctoral Research Fellow, Max Kade Foundation, U.S.A. Host: Department of Geography and Geology, University of Nebraska-Omaha, U.S.A.
Since 2018. Full Professor of Earth & Environment, University of Michigan-Dearborn, U.S.A.
2005-2017. Assistant/Associate/Full Professor of Geography, University of Montana, Missoula, U.S.A.
2002-2005. Assistant Professor of Geography & Environmental Sciences, DePaul University, Chicago, U.S.A.
2001-2002. Postdoctoral Researcher, Department of Geography & Geology, University of Nebraska-Omaha, U.S.A.
1995-2000. Lecturer, Institute of Geography, Technische Universität Berlin, Germany.
1994-1995. Junior Scientist, Institute for Space Sciences, Freie Universität Berlin, Germany.
1994. Adjunct Junior Scientist, Institute of Near Eastern Archaeology, Freie Universität Berlin, Germany.
Since 2021. Affiliated Professor in Urban and Regional Studies, University of Michigan-Dearborn, U.S.A.
2011-2017. Affiliated Professor in Systems Ecology, University of Montana, Missoula, U.S.A.
2009-2017. Affiliated Professor in Climate Change Studies, University of Montana, Missoula, U.S.A.
2008-2017. Affiliated Professor in Mountain Studies, University of Montana, Missoula, U.S.A.
Editor-in-Chief, Geomatics, Natural Hazards and Risk
Editorial Board Member: Geosciences; Glacies ("The Ice"); Journal of Mountain Science; Remote Sensing.
Co-director Regional Office for Mongolia, Global Land Ice Measurements from Space (GLIMS).
2011-2016. Glaciers and Stream Flow in High Asia. The World Bank.
1999-2001. River Habitat Assessment. Informus, Berlin, Germany.
1992-1994. Office for Regional Planning and Development (BPE), Berlin, Germany.
Field studies in India, Jordan, Mongolia, Montana/U.S.A., Pakistan, Peru, and Venezuela. Field campaign visitor in Algeria, Lesotho, and South Africa. Study trips in Denmark, Egypt, Faroe Islands, Germany, Iceland, and Portugal.