Sulphur Scavenging in a Mesoscale Model with Quasi-Spectral Microphysics

摘要: A three-dimensional mesoscale numerical model (Nickerson et al., 1986) with quasi-spectral microphysics has been employed for sulphur scavenging by different cloud systems. Combining meteorological predictions and pollutant parameterizations, two-dimensional sensitivity tests have performed continental maritime clouds over an idealized bell-shaped mountain. Model results indicate that nucleation is the most efficient in-cloud removal mechanism. Furthermore, according to droplet spectra in versus cases, scavenging, in-solution oxidation of SO2 ozone hydrogen peroxide dynamical capture sulphate particles hydrometeors contribute differently wet deposition. This reflects complexity non-linear interactions between winds, physicochemistry.