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Newly purchased DTS-Ruisdael

To test the newly  purchased Distributed Temperature Sensing (DTS)-machine, an experiment was employed in forest site Speulderbos in the centre of the Netherlands (Veluwe area). At this site the evaporation process is studied by measuring temperature profiles by fibre optic cables that are connected to the DTS machine (fig 1). Multiple cables are mounted on a 45-meter high flux tower to measure the entire air column from the forest floor throughout the canopy to well above this canopy (see fig 2). An example of the air temperature dynamics can be seen in fig 3. From these high-frequency (1Hz) temperature profiles we are able to estimate the sensible heat flux.







Figure 1                                                                     Figure 2






Figure 3