AAAR 35th Annual Conference October 17 - October 21, 2016 Oregon Convention Center Portland, Oregon, USA
Abstract View
Modeling of Gas Adsorption by Aerosol Plumes Emitted from Industrial Sources
BORIS KRASOVITOV, Tov Elperin, Andrew Fominykh, Itzhak Katra, Ben-Gurion University of the Negev, Israel
Abstract Number: 122 Working Group: Urban Aerosols
Abstract Although it is commonly accepted that air pollution is dominated by local emissions many studies report that plumes of harmful pollutants can be transported by wind across oceans and continents and warn about the growing danger of air quality degradation. Adsorption of trace atmospheric gases such as NO2, HNO3 and Iodine-131 by aerosol particles contributes to the evolution of concentration distribution of the trace constituents and can affect chemical reactions in the atmosphere. In the present study we suggest a two dimensional model of adsorption of trace atmospheric constituents by aerosol particles in air pollution plume emitted from industrial source. The model is based on an application of theory of turbulent diffusion in atmospheric boundary layer in conjunction with plume dispersion model. The wind velocity profiles used in the simulations were fitted from data obtained in field measurements conducted in the Northern Negev (Israel) using the experimental wind mast. The developed model allows analyzing spatial and temporal evolution of adsorbate concentration in the gaseous phase as well as in the particulate matter. The calculations were conducted for the particulate matter PM2.5-10, which is typical for industrial emissions. Analysis is performed for the different meteorological conditions and atmospheric stability classes. It is shown that concentration of the gases adsorbed by aerosol plume strongly depends on the level of atmospheric turbulence. The results of the present study can be useful in an analysis of different meteorology-chemistry models including gas adsorption by aerosol plumes emitted from industrial sources.