|
|
|
| Case study on the numerical simulations of the characteristics of temporal and spatial distributions of O3 and NO2 in Shanghai Area. |
|
|
|
|
Abstract A numerical simulation software Metphomod (Meteorology Photochemistry Model) was applied in Shanghai City to simulate the temporal and spatial distributions of SO2, NO2, NO and O3 in one episodes with high API index for each season in 2004. The resuts were best in summer and revealed the fundamental distribution patterns of the main air pollutants in Shanghai Area. The studies on June 7 and 8 in 2004 showed that the daily variation of concentrations of NO2 was relatively complex, while that of O3 mainly belonged to the single-peak pattern. The weather backgrounds, local meteorological conditions and pollution emissions were the major factors which influence the spatial distributions of air pollutants in Shanghai. In the region at high pollutant emission level, the correlation between the concentrations of O3 and NO2 was not significant, but the variation of the concentration O3 negatively correlated to that of NO; while in the region where local emission level was low and pollutants mainly transported from other places, the variations of O3 and NO2 were negatively correlated.
|
|
Received: 06 October 2008
|
|
|
|
|
|
|
