摘要
选取污染事件较为严重的冬季为研究对象,分析该季节空气质量指数(Air Quality Index,以下简称AQI)变化及其与气象要素之间的相关特性,为乌鲁木齐市在大气污染治理方面提供相关的理论依据。利用乌鲁木齐市2019—2021年的逐日AQI和地面气象要素数据,分析了该市冬季空气质量特征及其与气象要素的关系,结果表明:乌鲁木齐市1月空气质量最差,污染主要出现在冬季12月至翌年2月;冬季空气质量呈现明显的南优北劣的空间特征;冬季AQI与相对湿度呈显著的正相关,与降水量、气温、风速呈显著的负相关;降水量低于0.5 mm、相对湿度在60%~75%、平均气温在-20~-10℃、平均风速低于2 m/s时,容易出现重污染天气。
Analyzing the variation of Air Quality Index(AQI)and its correlation with meteorological factors in winter,which pollution is more severe,so as to provide theoretical basis for air pollution control in Urumqi.Based on the daily AQI and ground meteorological data from 2019 to 2021,this paper analyzed the characteristics of air quality and its relationship with meteorological elements in Urumqi in winter.The results showed that the air quality in Urumqi was the worst in January,and the pollution mainly appeared in December to February.In winter,the air quality showed obvious spatial characteristics of better in the south and worse in the north.The AQI was positively correlated with relative humidity,and negatively correlated with precipitation,air temperature and wind speed.Heavy pollution weather was occur when precipitation is less than 0.5 mm,relative humidity is between 60%and 75%,average temperature is between-20℃and-10℃,and average wind speed is lower than 2 m/s.
作者
邓婉月
纪元
叶尔纳尔
任重远
DENG Wan-yue;JI Yuan;Yernar;REN Zhong-yuan(Ecological Environment Monitoring Station of Xinjiang Uygur Autonomous Region,Urumqi Xinjiang 830011,China)
出处
《干旱环境监测》
2023年第1期10-14,共5页
Arid Environmental Monitoring
关键词
乌鲁木齐市
空气质量
相关分析
气象要素
Urumqi
air quality
correlation analysis
meteorological elements
作者简介
邓婉月(1991-),女,新疆乌鲁木齐人,工程师,硕士,主要从事空气质量预报及数据分析工作;通讯作者:纪元,女,工程师,大学本科,主要从事空气质量预报及数据分析工作。
