As a professor of Earth System Simulation at Delft University of Technology, Femke Vossepoel leads a research group of six PhD candidates and one postdoc in data-assimilation research in geosciences. The group’s projects involve using observations for estimating state and parameters in dynamic Earth-system models. Research topics include urban heat and air pollution, subsidence due to gas- or groundwater extraction, estimating and forecasting earthquakes, droughts, and slope stability.