地表参数设置对高架点源大气污染物扩散预测的影响研究  

Study on Effect of Surface Parameter Setting on Air Pollutant Diffusion Prediction in Elevated Point Source

作　　者：谢南洪 仝纪龙[1] 刘明[1] 孙文杰[1] 

机构地区：[1]兰州大学大气科学学院,甘肃兰州730000

出　　处：《环境科学与管理》2017年第4期32-36,共5页Environmental Science and Management

基　　金：国家杰出青年科学基金项目(41225018)资助

摘　　要：以某火电厂高架点源为例,运用AERMOD进行预测,对扇区进行粗划分和细划分,设置两组地表参数,分析SO_2、NO_2、PM_(10_在敏感点的小时浓度、日均浓度和期间平均浓度最大值的差异。变化幅度分析方法表明,PM_(10_的小时浓度、日均浓度、期间平均浓度最大值的变化幅度最大,NO_2次之,SO_2最小。高端值比较法分析表明,NO_2小时浓度最大值的差异最大,SO_2次之,PM_(10)最小;NO_2日均浓度最大值的差异最大,PM_(10)次之,SO_2最小;NO_2期间平均浓度最大值的差异最大,SO_2次之,PM_(10)最小。Taking a point source of a thermal po -wer plant as an example,the paper divide the sector into two roughness and fine division. It devides two sets of land surface parameters to analyze the different SO2 ,NO2 and PMw at the sensitive point,the daily average concentration and the period average concentration. The change rangeof the maximum concentration of PM 10 ,hourly concentration,daily average concentration and period concentration NO2 followed,SO2 is the smallest. Analysis of high value comparison shows that the different of maximum NO2 concentration is the largest , SO2 followed , PM10 is the smallest. The different of daily average maximum value NO2 concentration is the largest , PM10 followed,S02 is the smallest. The difference of pedod average maximum NO2 concentration isthe largest,SO2 the smallest.

关 键 词：地表参数 AERMOD 高架点源 变化幅度 

分 类 号：X511[环境科学与工程—环境工程]