Title: A Lagrangian particle model with chemical reactions: application in real atmosphere

Authors: Stefano Alessandrini; Enrico Ferrero

Addresses: RSE (Research on Energy Systems), via Rubattino 54, Milano, Italy ' Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale Teresa Michel, 11, 15121 Alessandria, Italy

Abstract: In this work, a Lagrangian particle model able to account for simple chemical reactions between NO and O₃ has been improved to consider the photolysis of NO₂. A system of chemical equations is numerically solved on a Eulerian grid, while the particle trajectories are moved in a Lagrangian frame. The NO_x emissions of a power plant in real atmosphere, situated in a complex topography environment, have been considered as a test case. The simulated episodes refer to the diurnal time, when the ultraviolet radiation activates the NO₂. Comparisons between NO/NO₂'s concentrations ratio are presented in terms of scatter plots and statistical indexes analysis.

Keywords: atmospheric dispersion; nitrogen oxides; NOx emissions; chemistry models; Lagrangian particle model; photo-stationary equilibrium; air quality; air pollution; dispersion modelling; power plant emissions.

DOI: 10.1504/IJEP.2011.047350

International Journal of Environment and Pollution, 2011 Vol.47 No.1/2/3/4, pp.97 - 107

Published online: 30 Apr 2015 *

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