Characteristics and potential sources of ozone pollution in Bayanhot
Based on the ozone concentration of Bayanhot Environmental Monitoring Station and mete-orological data from June to August 2022,combined with backward trajectory and potential source a-nalysis,the analysis of high values of near surface O3was conducted.The results showed that the o-zone concentration of the three national control stations was higher in June,but lower in August.The ozone concentration of the three national control stations was high during June 16-18 and June 24-25.Humidity and temperature are important meteorological factors affecting ozone concentration in Bayanhot.During the day and night,the ozone concentration of the three national control stations reached the highest value when the wind was southeast,and the dominant wind direction during the period of high ozone concentration was southeast wind.The backward trajectory analysis showed that the transmission of ozone pollution at 22:00-0:00 on June 24 was mainly affected by the southeast air flow,and the high value area from the concentration weight trajectory analysis(WCWT)(>100μg/m3)mainly distributed in Ningxia,eastern Gansu and Shaanxi Province from June 16 to 18 and from June 24 to 25.
NETL
NSTL
万方数据
