北戴河臭氧污染及气象背景研究

Analysis on Ozone Pollution and Its Meteorological Background in Beidaihe Area

基于北戴河、乐亭气象观测站太阳总辐射照度等气象数据和北戴河环保监测站的臭氧监测数据,分析2014年-2020年北戴河区域臭氧1小时平均浓度超标状况、引起超标状况的气象背景,结果表明:臭氧污染呈明显上升趋势,当太阳总辐射照度>700 W/m^(2)维持时间在3小时以上,地面水平风速≤1.4m/s极容易造成臭氧污染。在显著性水平α=0.05条件下,臭氧污染时数与气温、空气相对湿度、污染前3小时总辐照度、能见度呈正相关,与气压、污染期间总辐照度、风速呈负相关,且臭氧污染时数与风速和污染期间总辐照度的相关性最显著。

Based on related data that come from meteorological monitoring station and environmental monitoring station,this study analyzed 1-hour average ozone concentration and meteorological backgroundin Beidaihe area from 2014 to 2020.The results show that ozone pollution was an obvious upward trend,when the total solar irradiance was more than 700 W/m^( 2) and its maintenance time was more than 3 hours.The surface horizontal wind speed was less than 1.4m/s and ozone pollution was easily caused by thisbackground.Hours of ozone pollution were positively correlated with temperature,relative humidity of air,3-hours total solar irradiance of before pollution,and were negatively correlated with the air pressure,wind speed,total solar irradiance of pollution duration under the background of the significantlevelα=0.05,hours of ozone pollution had the most significant correlation with wind speed and total solar irradiance of pollution duration.