Senior scientist at Universität Hohenheim (since 2003). Head of the remote sensing group (since 2006). 2004 to 2013, coordinator of COPS (Convective and Orographically-induced Precipitation Study, a Research and Development Project of the World Weather Reseach Programme) 2000 to 2003, Feodor Lynen Research Fellow of the Alexander von Humboldt Foundation and the Japan Society for the Promotion of Science, postdoc at Radio Atmospheric Science Center for Space and Atmosphere, Kyoto University, Japan. 1999 to 2000, postdoc at GKSS. 1996 to 1999, doctoral student at GKSS Research Center, Germany. 1995 to 1996, diploma student at GKSS Research Center, Germany. 1987 to 1996, study of Physics and Computer Science at Universität Hamburg. Several social and university-panel activities (AStA, Akademischer Senat, Konzil, Studentenwerk).