Abstract
Abstract. Turbulent boundary layer concepts of constant flux layers and
surface roughness lengths are extended to include aerosols and the effects
of gravitational settling. Interactions between aerosols and the Earth's
surface are represented via a roughness length for aerosol which will
generally be different from the roughness lengths for momentum, heat or
water vapour. Gravitational settling will impact vertical profiles and the
surface deposition of aerosols, including fog droplets. Simple profile
solutions are possible in neutral and stably stratified atmospheric surface
boundary layers. These profiles can be used to predict deposition velocities
and to illustrate the dependence of deposition velocity on reference height,
friction velocity and gravitational settling velocity.
Funder
Natural Sciences and Engineering Research Council of Canada
Reference24 articles.
1. Barenblatt, G. I.: Motion of suspended particles in a turbulent flow,
Prikl. Matem. Mekh., 17, 261–264, 1953.
2. Brutsaert, W.: Evaporation into the Atmosphere, Reidel, Dordrecht, Holland, 299 pp.,
1982.
3. 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, https://doi.org/10.1002/qj.49706528211, 1939.
4. Csanady, G. T.: Turbulent Diffusion in the Environment, Reidel, Dordrecht,
Holland, 248 pp., 1973.
5. 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,
https://doi.org/10.1146/annurev-physchem-090519-034936, 2021.
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献