摘要
随着城市的发展,大气O_(3)的污染不容忽视。文章以呼和浩特市2016—2021年大气O_(3)浓度为研究对象,结合同期气象数据,采用相关分析等数理统计方法,分析了呼和浩特市大气O_(3)浓度年际、季节以及月份动态特征规律,探讨大气O_(3)浓度与关键影响气象要素之间的关系。结果表明:呼和浩特市大气O_(3)作为空气首要污染物的天数在逐年增加;6年间O_(3)浓度年际变化呈下降趋势,以-0.02μg·m^(-3)的年均速率变化;O_(3)浓度季节变化明显,夏季最高,其次是春季、秋季、冬季;O_(3)月平均浓度呈倒“V”形单峰变化,主要在6—8月浓度较高,12月浓度最低,O_(3)浓度超标日主要集中在6、7月;O_(3)浓度与气象要素呈密切关系,在非采暖期,O_(3)-8 h浓度与日平均气温和日照时数具有正相关趋势,与日平均气压、日平均相对湿度以及平均风速具有负相关趋势,降水对大气O_(3)的消除作用不明显。
With the development of cities,atmospheric ozone pollution can not be ignored.Taking the atmospheric ozone concentration in Hohhot from 2016 to 2021 as the research object,combined with the meteorological data of the same period,the interannual,seasonal and monthly dynamic characteristics of atmospheric ozone concentration in Hohhot were analyzed by using mathematical statistical methods such as correlation analysis.the relationship between atmospheric ozone concentration and key meteorological factors was discussed.The results showed that the days of atmospheric ozone as the primary air pollutant in Hohhot increased year by year;The interannual variation of O_(3)concentration showed a decreasing trend during the 6-year period,with an average annual rate of-0.02μg·m^(-3);There were obvious differences in the seasonal variation trend of ozone concentration,which is the highest in summer,followed by spring,autumn and winter;The monthly average concentration showed an inverted V-shaped unimodal change,mainly concentrated in June to August,the lowest value appeared in December,and the day of ozone exceeding the standard occurred in June and July.There was a close relationship between ozone concentration and meteorological elements.In non-heating period,O_(3)-8 h concentration had a positive correlation with average air temperature and sunshine hours,and a negative correlation with daily mean pressure,daily average relative humidity and average wind speed.Precipitation had no obvious effect on O_(3)elimination.
作者
朝宝
马秀枝
萨日盖
武玉龙
Chaobao;Ma Xiuzhi;Sarigai;Wu Yulong(Forestry College of Inner Mongolia Agricultural University,Inner Mongolia Hohhot 010019;Hohhot Meteorological Bureau,Inner Mongolia Hohhot 010051)
出处
《内蒙古气象》
2023年第1期14-19,共6页
Meteorology Journal of Inner Mongolia
