基于AERMOD模型的乌鲁木齐机动车排放大气污染物的数值模拟  

Research on Simulation of Atmospheric Pollution from Motor Vehicle Emissions Based on AERMOD Model in Urumqi

作　　者：蔺尾燕 贾尔恒.阿哈提 吕任生 邓文叶 马俊英 张清宇[2] 

机构地区：[1]新疆维吾尔自治区环境保护科学研究院新疆环境污染监控与风险预警重点实验室,新疆乌鲁木齐830011 [2]浙江大学环境与资源学院,浙江杭州310058

出　　处：《安全与环境工程》2016年第1期30-35,共6页Safety and Environmental Engineering

基　　金：国家自然科学基金项目(41465008);新疆维吾尔自治区环保厅排污费科技专项项目(新财建[2015]75号文);新疆维吾尔自治区科技基础条件平台建设项目(PT1504);新疆维吾尔自治区高技术研究发展项目(201115136)

摘　　要：以乌鲁木齐市主城区为例,将区域机动车排放清单数据作为排放源数据,利用AERMOD模型对乌鲁木齐市主城区域机动车排放的主要大气污染物质量浓度分布情况进行了数值模拟,并探讨了机动车排放的大气污染物对乌鲁木齐市城市空气质量的影响。结果表明:由机动车排放引起的乌鲁木齐市主城区域大气污染物CO、HC、NOx和PM10的质量浓度分布均表现为新市区和米东区高于其他几个区域,最大影响浓度点出现在新市区河南路北侧和米东区,为机动车所排放的大气污染物影响最为显著的区域;模拟得到的各大气污染物年均质量浓度在网格点最高值均低于相关标准浓度限值;显著影响区域范围内,NOx模拟预测浓度占区域环境空气质量浓度的44.12%,是区域环境空气中NOx的较为重要排放源,而可吸入颗粒物(PM10)仅占0.5%,说明机动车颗粒物排放不是乌鲁木齐城市空气中可吸入颗粒物的主要排放源。Taking the Urumqi＇ s main urban areas for example, and using the regional motor vehicle emission inventory data as the emission sources, the paper conducts a numerical simulation on mass concentration distributions of the major atmospheric pollutants from the regional motor vehicle emissions of the main ur- ban area of Urumqi City,and explores the influence of these atmospheric pollutants on urban air quality in Urumqi. The results show that the mass concentration distributions of CO, HC, NOx and PM10 caused by motor vehicle emissions are all higher in Xin-Shi district and Mi-Dong district than those in other districts. The most affected spots appear at the north side of Henan Road in Xin-Shi district and Mi-Dong district, which suffer the most remarkable influence of atmospheric pollutants from motor vehicle emissions. The results also indicate that the highest values of simulated annual mean mass concentrations of each major at- mospheric pollutants in the gird cells are all within the concentration limits from related standards. In the area significantly affected by motor vehicle emissions, the predicated NOx mass concentration contributes 44.12% of the ambient air-quality concentration,suggesting that motor vehicle emission is a major source of NOx in the regional atmosphere, while PM10 mass concentration only accounts for 0.5%, which shows that motor vehicle emission is not the major PM10 emission source in the main urban area of Urumqi.

关 键 词：AERMOD模型 大气污染物 机动车排放 数值模拟 空气质量评价 乌鲁木齐市 

分 类 号：X51[环境科学与工程—环境工程]