【摘要】 分析了2014—2018年济南市区大气重污染特征及其类型,并识别了各类大气重污染的主要气象影响因子.结果显示:（1）重污染主要发生在冬季,秋季和春季次之,夏季最少.（2）济南市区大气重污染主要为积累型和复合型.（3）5项气象要素中,相对湿度对空气质量影响最大,风速和日照时数次之,气温和气压影响较小.（4）积累型和沙尘型重污染期间,气压、气温和日照时数分布区间均较广,前者多发生在风速小、相对湿度大的时期,后者多发生在风速较大、相对湿度小的时期;O₃光化学型重污染期间,风速较小,相对湿度较大,气压较低,气温高且日照强;复合型重污染期间,气象条件的不确定性较大.更多还原

【Abstract】 This paper analyzed the characteristics and types of heavy air pollution in the downtown of Jinan from 2014 to 2018,and identified the main meteorological factors of different types of heavy air pollution. The results showed:（1） Heavy air pollution mainly occurred in winter,followed by autumn and spring,and least in summer.（2） The heavy air pollution events in the downtown of Jinan were mainly accumulated type and combined type.（3） Among the 5 meteorological factors,relative humidity had the greatest influence on air quality,followed by wind speed and sunshine hours,and temperature and air pressure had less influence.（4） During the periods of accumulated heavy air pollution and sand-dust caused heavy air pollution,the distribution range of air pressure,temperature and sunshine hours was wide. The former occurred in periods with low wind speed and high relative humidity,while the latter occurred in periods with high wind speed and low relative humidity. During the period of O₃ photochemical heavy air pollution,the wind speed was low,the relative humidity was high,the air pressure was low,the temperature was high,and the sunshine was strong. During the period of combined heavy air pollution,the uncertainty of meteorological conditions was great.更多还原