海洋气象学报2024，Vol.44Issue(3)：68-77,10.DOI:10.19513/j.cnki.hyqxxb.20230808001
重庆夏季不同气象条件下的臭氧特征
Characteristics of ozone under different meteorological conditions in Chongqing during summer
摘要
Abstract
The highest monthly temperature in Chongqing reached 41.3 ℃ in August 2022,and the hot weather lasted for 28 d.Under the high-temperature weather,the ozone does not exceed the standard in Chongqing city in August;while the overall temperature in July is lower than that in August,there are 7 ozone pollution days.By using observations and the WRF(Weather Research and Forecasting)model,this phenomenon is analyzed and the relationship between ozone and meteorological conditions in different areas is comprehensively explored.The results are as follows.(1)The temperature,boundary layer height and wind speed in August are relatively high,while the relative humidity is relatively low,which may be conducive to the improvement of ozone pollution in August.On the whole,the mass concentration of ozone in Chongqing first increases and then decreases with the increase of air temperature and boundary layer height.When the air temperature is higher than 30 ℃,the boundary layer height is higher than 1 000 m,the relative humidity is lower than 59％and the wind speed is lower than 6.3 m·s-1,the mass concentration and excess rate of ozone go up significantly.However,when the air temperature,boundary layer height,relative humidity and wind speed exceed 39 ℃,2 800 m,59％and 6.3 m·s-1,respectively,the mass concentration and excess rate go down significantly.(2)When the temperature in the main urban area and suburban counties(districts)exceed 38 ℃ and 37 ℃,respectively,the increase in the mass concentration of ozone becomes smaller or the mass concentration appears to decline;when the temperature in several counties(districts)is between 38 and 40 ℃,the mass concentration still maintains an upward trend.(3)On pollution days,the 2-h peak of increase of ozone and boundary layer height in Shapingba and Changshou districts occurs at 11:00 or 13:00 at the same time,while that in Hechuan and Rongchang districts occurs at different times.The study provides reference for the prediction,prevention and control of summer ozone pollution in Chongqing.关键词
高温/边界层高度/臭氧质量浓度/气象条件Key words
high temperature/boundary layer height/mass concentration of ozone/meteorological condition分类
资源环境引用本文复制引用
王陆潇,蔡哲,刘海涵,刘夏雪,刘强,葛鹏,刘祎,周德荣,江飞..重庆夏季不同气象条件下的臭氧特征[J].海洋气象学报,2024,44(3):68-77,10.基金项目
国家自然科学基金面上项目(42377102) （42377102）
