信阳市臭氧污染天气的气象条件特征分析  

Analysis on Meteorological Condition Characteristics of Ozone Pollution Weather in Xinyang City

作　　者：王梦旖 冯伟 WANG Meng-yi;FENG Wei(Xinyang Meteorological Bureau,Xinyang,Henan 464000,China)

机构地区：[1]信阳市气象局,河南信阳464000

出　　处：《四川环境》2023年第5期61-68,共8页Sichuan Environment

摘　　要：信阳臭氧污染近年来呈现多发频发的趋势,为研究气象要素对信阳臭氧污染形成的的作用,利用2014~2018年信阳4个国控站的臭氧监测资料,国家气象站5年基本气象观测资料以及高空、地面实况天气图资料,通过person相关性分析研究了信阳市臭氧污染特征及其与气象条件的关系,结果表明:(1)2014~2018年信阳市臭氧污染呈波动上升态势。月变化呈现“双峰”分布的特征,4~6月、9月为臭氧污染的多发时段。日变化则表现为“单峰”分布的特征。(2)分析了信阳市臭氧污染与14时气温、相对湿度、风向风速、边界层高度以及云量等气象条件的关系,总结了信阳市臭氧污染的天气形势、影响系统及气象条件概念模型,当500 hPa为高空低槽后部的西北气流或高压脊(西太平洋副热带高压),或宽广低槽前部的西南气流,地面处于变性高压、入海高压后部或弱低压带(鞍型场)影响下,发生臭氧污染的可能性较大。为信阳市臭氧污染的预报和防治,提供了较为客观、有效的参考依据。Ozone pollution in Xinyang has shown a trend of frequent occurrence in recent years.In order to study the effect of meteorological elements on the formation of ozone pollution,the ozone monitoring data of four national control stations in Xinyang from 2014 to 2018,the basic meteorological observation data of the National Meteorological Station for 5 years,and the upper-air and ground-truth weather map data were used,the characteristics of ozone pollution in Xinyang and its relationship with meteorological conditions were studied by person correlation analysis.The results showed that:(1)Ozone pollution in Xinyang fluctuated and increased from 2014 to 2018.The monthly variation presents the characteristics of"bimodal"distribution,and the period from April to June and September is the most frequent period of ozone pollution.The diurnal variation is characterized by"unimodal"distribution.(2)The relationship between ozone pollution in Xinyang and meteorological conditions such as temperature,relative humidity,wind direction and speed,boundary layer height,and cloud cover at 14:00 were analyzed,and the weather situation,affecting system and conceptual model of meteorological conditions for ozone pollution in Xinyang were summarized.When 500 hPa is the northwest airflow or high pressure ridge(western Pacific subtropical high pressure)behind the high-altitude low trough,or the southwest airflow in front of the broad low trough,and the ground is under the influence of denatured high pressure,high pressure entering the sea,or weak low pressure belt(saddle field),the possibility of ozone pollution is greater.It provides an objective and effective reference for the prediction and prevention of ozone pollution in Xinyang.

关 键 词：信阳 臭氧污染 气象条件 天气系统 

分 类 号：X16[环境科学与工程—环境科学]