Influence of meteorological parameters on urban and suburban air pollution

摘要

A study was carried out to investigate the effects of meteorological conditions on atmospheric pollutant concentrations in a complex area. In general serious pollution episodes in the urban and suburban environment are not directly caused by sudden increases in the emission of pollutants but results from unfavourable meteorological conditions. These unfavourable conditions may reduce the ability of the atmosphere to disperse pollutants and transport pollutants from other areas. The aim of this paper is to estimate impacts of the Esino Valley microclimate, topography, and emission sources on the urban and suburban air pollution characteristics, to determine the main meteorological factors that influence air pollution phenomena and quantify their impact on the air pollution levels in the valley. Data used in this study (namely meteorological conditions, Ozone, NO_2, and SO_2 concentrations) were compiled from hourly records for the period 1989-1999 in the Esino Valley.