Skip to content

Dust resuspension under weak wind conditions: Direct observations and model

by O. G. Chkhetiani, E. B. Gledzer, M. S. Artamonova, M. A. Iordanskii
Atmospheric Chemistry and Physics ()
Get full text at journal


The results of direct observations of fine mineral dust aerosol (0.15-15 μm) were carried out on extensive sand areas in desertificated lands of Kalmykia in 2007, 2009, and 2010 under conditions of weak wind and strong heating of the surface, almost in the absence of saltation processes. These results show that the fine mineral dust aerosol (0.15-0.5 μm) in the region under consideration contributes considerably to the total aerosol content of the atmospheric surface layer. Data on the mass concentrations of fine aerosol are treated on the basis of physical model estimates obtained for fluid dynamic parameters in the viscous thermal boundary layer near the ground surface. Deviations of these mass concentrations from their background values are related to a temperature drop in the thermal layer at the surface and from the values of friction velocity. For small and moderate values of friction velocity, these mass concentrations increase proportionally to a temperature drop with an exponent of about 0.5, and, for high friction velocities, this exponent becomes negative (∼-0.5), which implies a decrease in these concentrations with an increase in a temperature drop. © 2012 Author(s).

Cite this document (BETA)

Readership Statistics

17 Readers on Mendeley
by Discipline
47% Earth and Planetary Sciences
18% Environmental Science
12% Chemistry
by Academic Status
47% Student > Ph. D. Student
24% Researcher
12% Student > Doctoral Student

Sign up today - FREE

Mendeley saves you time finding and organizing research. Learn more

  • All your research in one place
  • Add and import papers easily
  • Access it anywhere, anytime

Start using Mendeley in seconds!

Sign up & Download

Already have an account? Sign in