个旧市大气环境影响因素分析
Analysis of the Influence Factors of the Atmosphere Environment in Gejiu

利用AERMOD模型，模拟了个旧市城区周边污染源排放在气象条件、城市效应及地形作用下对个旧市SO₂、NO₂及PM₁₀的贡献及影响。结果表明：城区周边在达标排放的情境下，在不利气象条件下仍然会对个旧城区大气环境质量造成一定不利影响；城市效应对大气环境影响不显著；个旧地形复杂，城区与两侧山体高差较大，存在明显山谷风，山体对污染物的输送和扩散造成了较大了阻挡作用，不利于污染物向外扩散，是造成城区南部污染物超标的主要原因。
In this study, AERMOD modeling system was used, to analyze how the pollution sources in the city surrounding area are influencing the air quality with the impact of different meteorological condi-tions, tropical island effect and complex topography. Results showed that emission resources within the standard will impact city atmosphere environment when meeting unfavorable meteorological conditions; the influence of tropical island effect was not strong; based on the complex terrain, topographic height difference was great, Mountain Valley Breeze (MVB) was obvious, and the existence of mountain obstructed the pollutant transportation and dispersion, which mainly led the air pollution on southern city.