Ozone as a strong oxidant is a main cause of the photochemical formation of smog. It can affect not only human health such as an interruption of mucous membranes, respiratory disease like asthma and head-ache but also crops and plants when ozone conce...
Ozone as a strong oxidant is a main cause of the photochemical formation of smog. It can affect not only human health such as an interruption of mucous membranes, respiratory disease like asthma and head-ache but also crops and plants when ozone concentration is high. In recent studies, ozone may have influence on the mortality and reduce the visibility and the amount of radiation. Therefore, the goal of this study is to minimize the damage by ozone when its levels are high. To formulate the reduction plan of ozone occurrence, characteristics of ozone in the atmosphere in Seoul Province are studied when the its concentration is high.
This study was conducted to investigate the factors affecting the ozone concentration and occurrence. Also, we studied the ozone-occurring conditions with hour, month and year and the trend of variation with meteorological data and concentration of air pollutants acquired by automatical measuring station in Seoul Province from 2002 to 2003. In case of ozone, the number of frequency of excess in the short-time standard is more important than change of annual average pollution concentration because it may give a bad influence to human body when it is exposed to high concentration. Ozone concentration in metropolitan is slowly increasing every year. Annual variation of ozone concentration is not important because it depends on time variation. Due to the air pollution, asthma rate after mid-1980 in south korea was increasing rapidly. Especially, ozone and particle dusts are closely related with children's asthma. Seasonal trend of ozone was the highest in summer, slowly increasing in spring, slowly decreasing in fall, the lowest in winter. The distribution of monthly ozone rate has some local difference and the highest on May and the lowest on January in 2003. The results have the highest concentration at 2 p.m. and the lowest ar 7 a.m. during the of episode. The correlation of the factors affecting the ozone concentration such as humidity, the amount of sunshines, NO2 and CO has something in common with previous research results. Especially, the ozone concentration is in inverse proportion to humidity and NO2. However, it is in direct proportion to amount of sunshine. The correlation of the ozone concentration and affecting factors appears to be different in season and area. Daily and monthly variation patterns of the ozone concentration in Seoul Province seem to be similar to other area. The ozone concentrations and local wind seem to cause the influx of high concentrations at stations near the sea.
The more study on relation between the ozone concentration and meteorological condition should be carried out in the future.