Fraigneau Y, Gonzalez M, Coppalle A
University of Rouen, URA CNRS 230/CORIA, Mont Saint Aignan, France.
Sci Total Environ. 1996 Oct 28;189-190:293-300. doi: 10.1016/0048-9697(96)05222-9.
The dispersion and chemical transformation of nitrogen oxides have been studied in an urban atmosphere. In this work, nitric oxide is considered as being emitted from the ground. It is mixed with ambient ozone with which it reacts to produce nitrogen dioxide. Numerical integration of the transport equation of each species is carried out in the boundary layer, allowing for the effects of dipersion, macro- and micromixing and chemistry. The results show that the influence of turbulence on chemical reactions is important close to the emission zone. It is also found that the NO/NO2 conversion is low in this region and that it grows with increasing distances.
在城市大气中对氮氧化物的扩散和化学转化进行了研究。在这项工作中，一氧化氮被认为是从地面排放的。它与周围的臭氧混合并发生反应生成二氧化氮。在边界层中对每种物质的传输方程进行数值积分，同时考虑扩散、宏观和微观混合以及化学作用的影响。结果表明，在靠近排放区的地方，湍流对化学反应的影响很重要。还发现该区域一氧化氮/二氧化氮的转化率较低，且随着距离增加而升高。
