Ozone and related gaseous pollutants in the boundary layer of eastern China: Overview of the recent measurements at a rural site

We present a summary of the latest measurements of ozone (O-3) and primary air pollutants at a rural/agricultural site in the fast developing Yangtze Delta region of China. The results of this study show elevated levels of primary pollutants (CO, SO, and NO8*), which are about 1-5 times of those typically found in rural areas of North America and Europe. O-3 pollution events are frequently observed. CO and SO, levels are particularly high, resulting from the unique energy-use pattern in China. O-3, shows strong positive correlation with NO8* and CO during periods of high photochemical activity. The O-3-NO8* slope is comparable to the result from rural North America, but the O-3-CO slope is substantially smaller for the Chinese site. With the anticipation of rapid changes of atmospheric composition in China, long-term measurements of key air pollutants will be necessary for documenting their trends and for studying their environmental impacts.