摘要
针对以往把整个混合层作为大气扩散研究对象的问题,研究了近地面大气污染带概念,建立了大气污染模拟模型。又考虑到目前大气污染模型仅注重研究铅直面上的二维扩散变化,而较少研究平面二维扩散问题,运用有限差分方法建立了近地面大气污染带的平面二维数值模型。通过应用证实,该大气污染模拟模型能够真实反映近地面大气中污染物的扩散趋势及空间分布特征,对城市大气环境污染预测和防治具有实际意义。
Aimed at formerly study that entire mixed layer was regarded as study objective of atmospheric diffusion, the concept of near-ground atmospheric pollution belt was studied and atmospheric pollution simulation model was established. Finite difference method was used to establish plane two-dimensional numerical model of near-ground atmospheric pollution belt, and results showed that the model can really reflect the pollutant diffusion tendency and spatial distribution characteristics in the near-ground atmosphere, which has important practical significance to the forecast, prevention and control of urban atmospheric pollution.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2007年第2期29-31,共3页
Environmental Science & Technology
基金
河北省博士基(金03547012D)
河北省教育厅博士基金(B2001111)
关键词
近地面大气污染带
模拟模型
数值模型
平面
二维扩散
nearground atmospheric pollution belt
simulation model
numerical model
plane
two-dimensional diffusion
