Study On The Temporal And Spatial Distribution And Variation Characteristics Of Atmospheric Ozone Pollution In Lanzhou City

Temporal distribution characteristics,correlation between O₃ and other main atmospheric pollutants(NO_X?SO₂?PM₁₀?PM_2.5?CO)were studied in this paper by using environmental statistical principles which were collected from Lanzhou Environmental Protection Bureau.The main purpose in this paper were,understanding the current statues and the source of O₃ pollution in Lanzhou City,analyze the contributions of O₃ on haze days.Also,provide reference for the prevention and control of O₃ atmospheric O₃ pollution in other areas.The results showed that the ozone concentration were very unstable,with 53 days above the Chinese ambient air quality standards and increases with time.Seasonal distribution showed that O₃ concentrations in autumn-winter were higher than that in spring-summer.In addition,the law of daily variation was also obvious,the O₃concentration increasing with solar radiation and temperature increases.Meanwhile,the O₃ concentration decreasing with solar radiation and temperature decreases.Besides,the spatial distribution of ozone concentration in urban and sub-urban were higher than that located in the exurban and the outskirts,but the ozone concentration in exurban and outskirts showed the different rules.Moreover,there was a negative correlation between O₃ and other atmospheric pollutants(NO_X?SO₂?PM₁₀?PM_2.5?CO)which showed that other atmospheric pollutants could inhibit the formation of O₃.Due to there is a positive correlation between O₃ concentrations and solar radiation,the ozone concentration in the sunny day was higher than cloudy and sand storm days.