应用多维多箱与高斯复合模型研究大气环境容量  

Composite model of multi-dimension multi-box model and Gauss model for atmospheric capacity study

作　　者：吴丽芳[1] 程水源[1] 陈东升[1] 王海燕[1] 郭秀锐[1] 

机构地区：[1]北京工业大学环境与能源工程学院

出　　处：《安全与环境学报》2007年第1期71-75,共5页Journal of Safety and Environment

基　　金：国家重点基础研究发展计划(973)项目(2005CB724201);国家自然科学基金项目(50578002)

摘　　要：根据北京市自然环境、污染气象特征、大气环境过程及区域污染源分布等信息,建立了用于大气环境质量预测的多维多箱与高斯模型结合的复合模型,结合大气环境质量标准计算了不同达标率下北京市的大气PM10环境容量。研究结果表明,复合模型综合考虑了各类影响因素,预测大气环境质量时产生的相对误差较小,能有效地应用于城市大气环境容量计算。This paper aims to report its authors＇ new approach to testing the atmospheric environment and the testing of the local pollutant sources distribution in Beijing Municipality area by applying a newly developed composite simulation model. As a matter of fact, the so-called multi-dimensional multi-box model is an innovation brought forward by Beijing University of Technology and Regina University （Canada）. The model is designated tbr studying the physical and chemical pollutant removing mechanism, testing of vertical and horizontal diffusion of the air pollutants and the changes of weather conditions in a 24 hour and all-weather basis. The model can also be used to forecast the weather and atmospheric quality in different cities, particularly designated for simulating PM10 pollutant concentrations in Beijing. To establish a multi-dimensional multi-box model, we have divided the whole city into 38 sub-boxes according to the geographical locations and into 3 strata vertically according to the atmospheric spaces. Then, the model can further be divided into 114 subboxes, including the upper strata, and quality-balance equation groups to be measured in tour directions（N, S, E and W）, respectively. Gauss model is adopted also to torecast the air pollutant diffusion from all the main point sources. Comparing all the related study resuhs with the indications in the international popular model-3, we have found that the expected pollutant distribution concentrations as well as the atmospheric environment capacity indicators gained from the composite model and multi-dimensional model are very much similar, The so-called atmospheric environmental capacity here mentioned is referred to as the optimal amount of the atmospheric emission if it can meet the state atmospheric environment quality standard at some areas and in some phases. Based on the forecasting of the atmospheric pollutant concentration, we have evaluated the atmospheric environmental capacity in Beijing which is indeed below the state atmospheric environ

关 键 词：环境工程 环境质量 大气环境容量 多维多箱模型 高斯模型 

分 类 号：X83[环境科学与工程—环境工程]