CAJ | 학술논문

利用中尺度气象模式WRF与多尺度空气质量模式CMAQ系统模拟了试验期间（2005年1月30日—2月2日）兰州市城区SO2的地面浓度，分析了兰州市冬季污染物的空间分布特征，探析了复杂地形气象场对近地面污染物浓度分布的影响。研究结果表明受污染源排放特征和气象条件的综合影响，西固区和城关区各有一处SO2高浓度区域，夜间SO2地面污染范围小于日间，夜间污染物地面最大浓度高于日间，夜间模拟区域SO2平均浓度低于日间；水平流场、山谷风环流形成的垂直运动和垂直扩散均对污染物地面浓度有明显影响，研究结果可为兰州城市环境质量监测布点、空气污染防控与治理提供参考依据。
이용중척도기상모식WRF여다척도공기질량모식CMAQ계통모의료시험기간（2005년1월30일—2월2일）란주시성구SO2적지면농도，분석료란주시동계오염물적공간분포특정，탐석료복잡지형기상장대근지면오염물농도분포적영향。연구결과표명수오염원배방특정화기상조건적종합영향，서고구화성관구각유일처SO2고농도구역，야간SO2지면오염범위소우일간，야간오염물지면최대농도고우일간，야간모의구역SO2평균농도저우일간；수평류장、산곡풍배류형성적수직운동화수직확산균대오염물지면농도유명현영향，연구결과가위란주성시배경질량감측포점、공기오염방공여치리제공삼고의거。
SO2 concentration in urban Lanzhou for the period of 30 Jan- 2 Feb was simulated using the Multi-scale Community Air Quality(CMAQ)model with meteorological field from the Weather Research and Forecasting (WRF)model. The spatial distribution of SO2 and its diurnal variations were analyzed focusing on the effect of mean wind and the vertical transport of pollutants by mountain-valley winds. Related to emission source distributions and meteorological conditions, there are two hot spots of high SO2 concentrations located in Xigu and Chengguan districts, respectively. The area with high SO2 concentrations in nighttime is smaller than that in daytime, and the maximum SO2 concentration at night was significantly higher than that in daytime. The mean wind and the vertical wind related to mountain-valley wind circulation have obvious influence on near surface SO2 concentrations. Results from this study would provide guidance on the sitting of air quality monitoring sites and air pollution mitigation.