Comparison between Experimental Data and a Langevin Particle Dispersion Model Including Dry Deposition

Random walk models are powerful tools to describe turbulent diffusion in the atmospheric boundary layer. These models describe the evolution of a passive tracers (“particles”) in phase-space via a stochastic differential equation, usually the Langevin equation. They have developed from early applications to homogeneous turbulence (Lin and Reid, 1962) via applications to both inhomogeneous turbulence (Wilson et. al., 1981) and skewed turbulence (Baerentsen and Berkowitz, 1984).