Articles | Volume 21, issue 24
Atmos. Chem. Phys., 21, 18263–18269, 2021
Atmos. Chem. Phys., 21, 18263–18269, 2021

Research article 16 Dec 2021

Research article | 16 Dec 2021

Constant flux layers with gravitational settling: links to aerosols, fog and deposition velocities

Peter A. Taylor

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Subject: Aerosols | Research Activity: Atmospheric Modelling | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
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Cited articles

Barenblatt, G. I.: Motion of suspended particles in a turbulent flow, Prikl. Matem. Mekh., 17, 261–264, 1953. 
Brutsaert, W.: Evaporation into the Atmosphere, Reidel, Dordrecht, Holland, 299 pp., 1982. 
Calder, K. L.: A note on the constancy of horizontal turbulent shearing stress in the lower layers of the atmosphere, Q. J. Roy. Meteor. Soc., 65, 537–541,, 1939. 
Csanady, G. T.: Turbulent Diffusion in the Environment, Reidel, Dordrecht, Holland, 248 pp., 1973. 
Farmer, D. K., Boedicker, E. K., and DeBolt, H. M.: Dry Deposition of Atmospheric Aerosols: Approaches, Observations, and Mechanisms, Annu. Rev. Phys. Chem., 72, 16.1–16.23,, 2021. 
Short summary
Atmospheric aerosols including fog droplets can be deposited on the ground or on water surfaces. This is due to both gravitational settling and turbulent impaction. A simple model of this combined process is developed based on conventional atmospheric-boundary-layer ideas. The model suggests an alternative formulation for the treatment of gravitational settling in the deposition velocity estimations of aerosol particles and fog droplets.
Final-revised paper