Research interests

• Turbulence in canopies with an emphasis on scalar transport in and above the canopy. Research is based both on observations and large-eddy simulation.
• Turbulence in the convective boundary layer, with particular emphasis on (dis-)similarities between different scalars. My work focuses on heterogeneity in surface properties and the effect of dissimilar entrainment ratios.
• The practical link between turbulent transport and the surface energy balance. This work encompasses the estimation of the surface evapotranspiration from remote sensing data, land-surface models in atmospheric models and the use of forecasted meteorological data in the prediction of the spread of plant diseases.

Miscellaneous activities

• Member of the editorial board of Boundary-Layer Meteorology (since 2010).
• Member of the AMS Committee on Boundary Layer Turbulence (since 2012).
• Authored (together with Jos van Dam, also of Wageningen University) a text-book on 'Transport in the Atmosphere-Vegetation-Soil continuum' , published in 2014  by Cambridge University Press.
• Reviewer of papers for a wide range of journals.

Education related

• I developped the rubric for the asssessment of MSc-theses, now used throughout Wageningen University (the rubric and the user manual)
• I co-authored the course module Summer in the City, developed for the secondary school subject Nature, Life and Technology.
• I participated in the development of a simulation tool for secondary school students on the topic of boundary-layer clouds (investigative learning).
• I have been developping a series of low-tech video clips to support my teaching in the courses Atmosphere-Vegetation-Soil Interactions (clips) and Geophysical Fluid Mechanics (clips)
• I have been involved in the development of an online course to teach students the scientific method as a preparation for their BSc thesis. The material is used in a blended course at Wageningen University.