Vol. 13, issue 12, article # 12

pdf Yudin M. S. Transport of aerosols over complex terrain on small scales: semi-Lagrange and random walk methods. // Atmospheric and oceanic optics. 2000. V. 13. No. 12. P. 1048-1050.
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Abstract:

A mesoscale meteorological model is used for mathematical simulation of aerosol spreading under conditions of a complex terrain. Aerosols are transported against the background of meteorological fields calculated by this model. Two approaches are discussed: the semi-Lagrange method for calculation of aerosol advection and the simple model of random walk of particles. An example of calculation of aerosol transport over a steep hill is presented. In this example, the temperature field is calculated by the first method, and the aerosol transport is calculated by the second method. The obtained pattern of aerosol sedimentation agrees qualitatively with the existing theory.