区域复杂地形大气污染扩散的模拟研究  

Modeling on the Regional Air Pollutant Dispersion over Complex Terrain

作　　者：刘丽[1,2] 王体健[1] 王勤耕[3] 

机构地区：[1]南京大学大气科学系,江苏南京210093 [2]贵州省山地环境气候研究所,贵州贵阳550002 [3]南京大学环境学院,江苏南京210093

出　　处：《高原气象》2008年第5期1074-1082,共9页Plateau Meteorology

基　　金：国家高技术研究发展计划项目(2006AA06A307);教育部2006年"新世纪优秀人才计划"共同资助

摘　　要：围绕复杂地形区域尺度大气污染物的扩散问题,以贵州西部山区"西电东送"大型火电厂六枝电厂所在区域为例,采用局部嵌套的高分辨率复杂地形大气扩散模式系统,模拟了该区域大气边界层气象场和污染物散布的浓度场,给出二级空气质量标准下各级保证率的小时平均和日均浓度分布,进而得出其年均浓度分布,分析其时空分布及变化特征,研究了山区复杂地形上大气污染物的扩散特性和散布规律。A numerical study was conducted to model the regional air pollutant dispersion over complex terrain, using the Liuzhi Thermal Power Plant as an example. The plant is located in the western mountainous region of Guizhou Province and is a station incorporated in the national West-East Electricity Transmission Project. The meteorological and concentration fields in this area were simulated with a locali ty nested, high resolution atmosphere diffusion modeling system suitable for mountainous complex topography. Based on the hourly and daily average concentration under various given assuring rates in terms of Air Quality Standard Band 2, the annual average concentrations are obtained. Their temporal and spatial characteristics and variation are analyzed subsequently. Finally, the diffusion characteristics and distribution patterns of air pollutant concentrations over mountainous terrain are summarized.

关 键 词：复杂地形 高分辨率 扩散模式 污染扩散模拟 

分 类 号：X51[环境科学与工程—环境工程]