Effects of Inversion Layer and Vegetation Area on Atmospheric Pollutant Dispersion along with Sensitivity of Vegetation Parameters Fidelis Nofertinus Zai (a*), Agus Yodi Gunawan (b)
a) Department Mathematics, Universitas Sumatera Utara, Medan 20155, Indonesia
*fidelis[at]usu.ac.id
b) Industrial and Financial Mathematics Research Group, Institut Teknologi Bandung, Jln. Ganesa 10, Bandung, Indonesia
Abstract
In this paper, a mathematical model describing effects of an inversion Layer and a vegetation area on atmospheric pollutant dispersion arising from a high chimney is constructed. The steady advection-diffusion equation is applied to predict pollutant concentrations at ground surface. An analytical solution procedure via the integral transforms is presented. Solutions are entirely determined by two main parameters, the inversion layer and the vegetation parameters. The inversion layer parameters include the source strength emanating from the chimney and the height of the inversion layer. While, the vegetation parameters are type of tree, leaf density, and its area. The pollutant concentration on the ground surface with some multiple source formations of chimney will also be explored. Results show that the lower the inversion layer, the higher the pollutant concentration on the ground level is. The higher the vegetation parameter value, the greater the reduction in pollutant concentration is.
Keywords: Pollutant dispersion, inversion layer, vegetation, advection-diffusion equation, integral transforms.
