开封市臭氧污染气象条件分析
Analysis of Meteorological Conditions of Ozone Pollution in Kaifeng City
崔坤 1赵慧 2韩涛 1魏飞翔 1初然军1
作者信息
- 1. 中科三清科技有限公司,北京 100029
- 2. 河南中标检测服务有限公司,河南 郑州 450001
- 折叠
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(O3)污染气象条件特征.结果表明:开封市O3 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O3 质量浓度相关性不高,温度和O3 质量浓度呈正相关,相对湿度和O3 质量浓度呈负相关.与其他区域城市不同,开封市发生O3 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%,O3 污染风险大.O3 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O3 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%.
Abstract
Based on air quality monitoring and meteorological observation data in Kaifeng City,the characteristics of ozone(O3)pollution meteorological conditions were studied for the period of 2019-2023.The results show that O3 pollution in Kaifeng City is mainly concentrated in the months of May-September,which is consistent with other cities in the Beijing-Tianjin-Hebei re-gion.The correlation between wind speed and O3 is found to be low,while temperature and O3 are positively correlated,and relative humidity and O3 are negatively correlated.Unlike other regional cities,Kaifeng City experiences O3 pollution at a wider range of relative humidity levels(<60%).Further analysis reveals that the risk of O3 pollution is high when the temperature is between 29℃and 35℃and the relative humidity is between 30%and 60%.The increase in O3 concentration is not only influenced by changes in surface meteorological elements,but also by weather system con-ditions in the lower surface-bottom-troposphere.The main weather patterns associated with O3 ex-ceeding 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.
关键词
开封市/O3污染特征/气象条件影响Key words
Kaifeng city/ozone(O3)pollution characteristics/meteorological condition引用本文复制引用
基金项目
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)
出版年
2024
NETL
NSTL
万方数据