Dynamics of ozone and its precursors in the atmosphere and their pollution characteristics in Qingdao,Shandong province

According to the observational data in Baguan Mountain of Qingdao from December 2003 to March 2005,the dynamics of O3,NOX and CO concentrations and their controlling factors in the atmosphere were analyzed.The interactions between ozone and its precursors(such as NOX and CO) were also studied.The results indicate that daily average NO2 concentration is more than 25% of the standard rate in 2004.NOX and CO concentrations are higher in winter and lower in summer,while O3 concentration is contrary because of photochemical reaction and atmosphere movement.There are two peaks in the curve of daily variations of NOX and CO concentrations.And NOX and CO concentrations in the day are higher than those in the night.The peak value of O3 appears in the afternoon,which is deferred about 5 hours for the peak value of NOX,and O3 concentration in the cloudy and rainy night will rise again.The ratio of O3 to NO2/NO can reflect the effects of radiation intensity and vehicle emission on pollution characteristics in Qingdao.The ratio of CO to NOX is around 10 under different weather conditions,which can be used to evaluate the characteristics of air pollution in different regions.