Velocity measurement of a vertical current of air using scintillation of laser beam

A wind velocimeter using scintillation of the laser beam has been developed for a portion of a gas flux monitor, which has been modified common eddy correlation method. The velocimetry system shares the laser beam with a laser absorption spectrometry (LAS) system and can obtain the wind velocity in the quite same location that the LAS system monitors gas density. To confirm the performance of the velocimetry system under the natural condition, some outdoor experiments were carried out to monitor upward current of air. In this paper, some results of outdoor experiments are demonstrated.