Study on the Characteristics of Ozone Pollution and Its Relationship with Meteorological Factors of Kunming

This paper analyzed the characteristics of atmosphere quality and ozone（O₃） pollution in Kunming from2014 to 2018 based on the ozone pollution and meteorological conditions. The correlation between ozone concentration and meteorological factors was studied. The main results were as follows: The trend of atmosphere quality gradually became better. The concentration of ozone showed an increasing tendency. Ozone pollution was obviously in spring and summer. The ozone concentration was higher in spring and lower in autumn and winter. The high value was mainly in March to May. Ozone pollution mainly occurred from March to August. The highest value was in July. The O₃ had a positive relationship with solar radiation,temperature,vertical distribution of temperature in the lower atmosphere,and wind speed,and a negative relationship with pressure and relative humidity.