摘要
利用内蒙古11个环保监测站提供的2014—2016年颗粒物浓度监测日均值和同期沙尘天气观测资料,从统计分析和个例剖析两方面探究了沙尘天气对颗粒物污染年变化的影响,研究表明:近3 a春季内蒙古沙尘天气的发生呈逐年增加的态势,中西部是沙尘天气频发地带,与之相对应,中西部地区颗粒物浓度的年变化高于东部,表明沙尘天气对颗粒物浓度的影响显著;春季沙尘天气对PM_(10)浓度的影响强于PM_(2.5),而当地供暖排放与之相反;沙尘输送以粗颗粒物为主,当地颗粒物污染排放以细颗粒物为主;沙尘暴过程对颗粒物污染的影响明显大于扬沙过程。
Based on the daily mean value of particulate matter concentration monitored by 11 environmental monitoring stations in Inner Mongolia during 2014—2016 and the sand-dust weather observation data during the same period,the influence of sand-dust weather on the annual variation of particulate pollution was explored from two aspects of statistical analysis and case analysis,the results showed that the occurrence of sand-dust weather in Inner Mongolia is increasing year by year in the past three years, and the mid-west is a frequent area of sand-dust weather.Correspondingly,the annual variation of the concentration of particles in the mid-west is higher than that in the east, indicating that sand-dust weather has a significant influence on the concentration of particulate matter. The influence of sand-dust weather on PM（10） concentration is stronger than that of PM（2.5） in spring,while influence of local heating emissions is opposite. The dust transport is dominated by coarse particles,while fine particulate matter is the main pollutant emission in the local particulate matter. In addition,the dust storm process has a greater impact on particulate pollution than the sand blowing process.
作者
朱蓉
杨丽桃
柳志慧
王式功
ZHU Rong;YANG Litao;LIU Zhihui;WANG Shigong(Chengdu University of Information Technology,Chengdu 610025,China;Climate Center for Inner Mongolia Autonomous Region,Hohhot 010051,China;Meteorological Observatory for Inner Mongolia Autonomous Region,Hohhot 010051,China)
出处
《沙漠与绿洲气象》
2018年第3期18-25,共8页
Desert and Oasis Meteorology
基金
国家自然科学基金重大研究计划重点支持项目(91644226)
国家重点研发计划"全球变化及应对"重点专项(2016YFA0602004)共同资助
