EXPERIMENTS ON THE MEASUREMENT OF SPATIALLY MEAN HEAT FLUX BY USING SCINTILLOMETER

Three types of experiments on the measurements of spatially mean heat flux were performed by using two sets of scintillometer. In the Case-1, two sets of scintillometer are located adjacently and parallel, in the Case-2, their propagation paths are crossed, and in the Case-3 they are located parallel at the different height. The following results are obtained; 1) the fluctuations of the sensible heat fluxes measured by closely located scintillometer agree with each other, 2) the crossed scintillometer agree well when they are averaged every 30min, but their 1 min-averaged data don't agree, 3) the method to estimate the regional zero-displacement height “d” by using two sets of scintillometer is checked and the proper height of d is derived.