Vol. 21, issue 09, article # 6

pdf Emilenko A. S., Isakov A. A. On fluctuations of the angular scattering coefficient of near-ground aerosol in deserted area. // Atmospheric and oceanic optics. 2008. V. 21. No. 09. P. 674-678.
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The fluctuations of the mineral aerosol angular scattering coefficient are analyzed by data of measurements in July, 2007 in Kalmykia. Measurements were performed with the use of two nephelometers, placed at one site at heights of 0.5 and 2 m, or at two sites spaced by 30 m down the wind. The sampling frequency from nephelometers was equal to 1 Hz. The basic attention was paid to the estimation of the role of non-local effects in the processes of the aerosol generation in the wind-sand flow at wind speeds of 5-8 m/s. In the ground layer, the shape of the spectrum of power density of fluctuations of the scattering coefficient does not change with height. Non-local effects in variations of the scattering coefficient were revealed when measuring with spaced nephelometers.


aerosol, coefficient of directed light scattering, nephelometer, deserted area