摘要
根据开封市空气质量监测和气象观测数据,研究2019—2023年臭氧(O_(3))污染气象条件特征。结果表明:开封市O_(3)污染主要集中在5月—9月,与京津冀及周边地区城市基本相符。风速和O_(3)质量浓度相关性不高,温度和O_(3)质量浓度呈正相关,相对湿度和O_(3)质量浓度呈负相关。与其他区域城市不同,开封市发生O_(3)污染的相对湿度范围更广(<60%)。具体分析,当29℃<温度<35℃,30%<相对湿度<60%,O_(3)污染风险大。O_(3)质量浓度上升,不仅受地面气象要素变化影响,还依赖于地面-底层-对流层低层的天气系统情况。开封市O_(3)超标天主要天气形势为西风槽后西北气流型、冷涡后西北气流型、大陆高压脊型、副热带高压控制型和台风外围型,合计占比92%。
Based on air quality monitoring and meteorological observation data in Kaifeng City,the characteristics of ozone(O_(3))pollution meteorological conditions were studied for the period of 2019—2023.The results show that O_(3)pollution in Kaifeng City is mainly concentrated in the months of May-September,which is consistent with other cities in the Beijing-Tianjin-Hebei region.The correlation between wind speed and O_(3)is found to be low,while temperature and O_(3)are positively correlated,and relative humidity and O_(3)are negatively correlated.Unlike other regional cities,Kaifeng City experiences O_(3)pollution at a wider range of relative humidity levels(<60%).Further analysis reveals that the risk of O_(3)pollution is high when the temperature is between 29℃and 35℃and the relative humidity is between 30%and 60%.The increase in O_(3)concentration is not only influenced by changes in surface meteorological elements,but also by weather system conditions in the lower surface-bottom-troposphere.The main weather patterns associated with O_(3)exceeding days in Kaifeng City are found to be westerly trough followed by northwesterly airflow,cold vortex followed by northwesterly airflow,continental high pressure ridge,subtropical high pressure control,and typhoon periphery,which accounted for 92%of the total.
作者
崔坤
赵慧
韩涛
魏飞翔
初然军
Cui Kun;Zhao Hui;Han Tao;Wei FeiXiang;Chu RanJun(ZhongkeSanqing Technology Co.,Ltd,Beijing 100029,China;Henan Bid Testing Service Co.,Ltd,Zhengzhou Henan 450001,China)
出处
《河北环境工程学院学报》
CAS
2024年第4期74-81,共8页
Journal of Hebei University of Environmental Engineering
基金
开封市生态环境局开封细颗粒物和臭氧污染协同防控“一市一策”驻点跟踪研究项目(汴财单一采购-2022-17)。
关键词
开封市
O_(3)污染特征
气象条件影响
Kaifeng city
ozone(O_(3))pollution characteristics
meteorological condition
