Ir. W.M.L. Meijninger : Surface fluxes over natural landscapes using scintillometry

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1 Oct 2003 16:00
Unit: Wageningen University
Location: Aula (gebouw 362), Gen. Foulkesweg 1, Wageningen
Promotor: prof.dr. B. Holtslag (Meteorology and Air Quality)
Co Promotor: dr. H.A.R. de Bruin

 Motivated by the demand for reliable area-averaged fluxes associated with natural landscapes this study investigates a relative new measurement technique known as the scintillation method. A scintillometer is an instrument that can determine the vertical exchange processes of e.g. heat and water vapour based on the propagation statistics of electromagnetic radiation. The main advantage of this technique, compared to traditional ‘point’ techniques, is that it can measure of horizontal lengths scales up to 10 kilometres. In this study the following aspects of the scintillation method are investigated: the performance of a large aperture scintillometer (or LAS) over heterogeneous land surfaces (i.e. natural landscapes); the combination of a LAS and a radio wave scintillometer (known as the two-wavelength method) over natural landscapes; the practical applicability of a LAS and its usefulness in other scientific areas, such as remote sensing techniques. See also: Internet link: www.met.wau.nl / research / scintillometer experiments
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