Researchers at Wageningen University and collaborators have been using scintillometry to study surface fluxes on a kilometer scale. By measuring light intensity fluctuations caused by atmospheric turbulence, they can estimate heat and evaporation from different types of landscapes. They found that a large aperture scintillometer can accurately measure sensible heat flux, with new correction procedures overcoming saturation effects. Combining this with a millimeter wave scintillometer allows for estimating both sensible and latent heat fluxes over natural landscapes. Their results from field experiments show good agreement with traditional measurements. The researchers are exploring how this method can be applied in hydrology and agriculture.