平面交叉口汽车排放（CO）污染规律

Study on Traffic Emission (CO) Pollution at Intersections

根据市区平面交叉口的交通流特征、汽车有害物排放规律及周围建筑物的结构形式，采用风洞试验和数值计算的研究方法，分析了汽车排放污染物的产生、扩散及污染分布规律，提出城市交叉口大气环境质量运行分析方法．

Based on the characteristic of traffic flow at intersections, mobile emission factor and buildings around intersections, the traffic emitted carbonmonoxide and its dispersion process in the urban atmospheric boundarylayer are analysed. Both windtunnel investigation and numerical simulation show that traffic emission accumulates in one of the intersoction legs and concentration tends to be higher. This result is consistent with that of field investegation.