Analysis of Density of PM2.5 under Diffusion and Attenuation Based on Non-Stationary Two-Dimensional Multi-Box Model

Abstract:

High density of PM2.5 that has an insignificant contribution to the increasing dusty weather threats the physicaland mental health of approximate six hundred millions Chinese recently. In this paper, we investigate thediffusion and attenuation of PM2.5 and give a prediction of its density in Xi’an city, which is based on nonstationarytwo-dimensional multi-box model, while considering the effect of seasons and wind direction. Asimulation is conducted with data from thirteen random selected stations. Furthermore, by comparing the realmeasured value and numeric value, we evaluate the validity of our proposed model as well as giving the relativeerror.Keywords: Two-Dimensional Multi-Box model, PM2.5, Diffusion, Attenuation.

• Periodical: Advanced Materials Research (Volumes 955-959)
• Pages: 2505-2512
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.955-959.2505
• Online since: June 2014
• Authors: Cao Yuan Hu, Hai Yan Li, Xiao Ming Huang, Zhi Li
• Keywords: Attenuation, Diffusion, PM2.5, Two-Dimensional Multi-Box Model

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