【作者】 张佳欣； 康娜； 程宇飞； 张朝； 卢士庆； 戚跃； 谷雨；

【Author】 ZHANG Jiaxin;KANG Na;CHENG Yufei;ZHANG Chao;LU Shiqing;QI Yue;GU Yu;Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration,Nanjing University of Information Science and Technology;Inner Mongolia Environmental Monitoring Station;Inner Mongolia Meteorological Bureau;Gengdan Institute of Beijing University of Technology;

【机构】 南京信息工程大学中国气象局气溶胶-云-降水重点开放实验室； 内蒙古自治区环境监测总站； 内蒙古气象局； 北京工业大学耿丹学院；

【摘要】 明确大气污染物的时空分布特征及其影响因素,对大气污染防控治理有重要理论价值。利用2015—2019年内蒙古空气质量逐日监测资料对12个盟市的空气质量指数和PM_2.5、PM₁₀、SO₂、NO₂、CO和O₃ 6种大气污染物逐时监测资料及同期气象要素观测资料,分析了内蒙古各市年、季、月、日大气污染的分布特征,以及各污染物间和气象要素的关系,结果表明:在时间分布上,除O₃浓度呈增长趋势外,其他5种污染物浓度均表现出下降趋势,表现为"夏低冬高"的季节变化特征;污染日主要集中在春冬季;小时浓度显示出"双峰"分布特征;在空间分布上,AQI呈现"西南高,东北低,中间过渡"的特征,其中乌海、包头、呼和浩特空气质量较差;温度、相对湿度、风速对污染物存在影响。更多还原

【Abstract】 Clarifying the spatial and temporal distribution characteristics of air pollutants and their influencing factors has important theoretical value for air pollution prevention and control management.Using the daily air quality monitoring data of Inner Mongolia from 2015 to 2019 on the air quality index and hourly monitoring data of six air pollutants PM_2.5,PM₁₀,SO₂,NO₂,CO and O₃ in 12 league cities and the observation data of meteorological elements in the same period,the distribution characteristics of annual,quarterly,monthly and daily air pollution in Inner Mongolia cities,and the relationship between each pollutant and meteorological elements were analysed.The results showed that:in terms of time distribution,except for O₃,which showed an increasing trend,the concentrations of the other five pollutants showed a decreasing trend,showing a seasonal change of "low in summer and high in winter";the polluted days were mainly concentrated in spring and winter;the hourly concentrations showed a "double peak" distribution;in terms of spatial distribution,the hourly concentrations showed a "double peak" distribution.In terms of spatial distribution,AQI shows a characteristic of "high in the southwest,low in the northeast and transitional in the middle",with poorer air quality in Wuhai,Baotou and Hohhot;temperature,relative humidity and wind speed have an impact on pollutants.更多还原