The invention discloses a sand-dust
aerosol turbulence flux measurement
system and a measurement method thereof. According to the measurement
system and the measurement method, a
white light source isadopted in an emitter of an
extinction coefficient
measuring instrument, and the
signal-to-
noise ratio of the instrument is improved; and a periodically-rotating light
chopper is arranged in front ofthe
light source, and a difference of scattering
extinction coefficients of adjacent sampling points is obtained, and the scattering
extinction coefficient of outside
noise is eliminated; by increasing the sampling frequency of the extinction coefficient
measuring instrument, the high-frequency
aerosol scattering extinction coefficient is obtained, and the sand-dust
aerosol turbulent flux under the condition of strong dust is obtained; according to the measurement
system and the measurement method, the sampling frequency of the extinction coefficient
measuring instrument is improved, so thatthe requirement for calculating the turbulent flux is improved; an eddy-correlation technique is used for determining the sand-dust aerosol turbulence flux, the problem about obtaining of
mass concentration pulsation and the turbulence flux of sand-dust aerosol is solved for the first time, and the basis is provided for the forecast mode; and in addition, operation is simple, the implementation isstrong,
mating with an existing water-
heat flux observation system can be achieved, or an
observation system can be formed separately, and
observation data processing is mature.