摘要
为研究山地地形对城市大气环境状况的影响,特选取江西省吉安市作为典型研究对象,统计分析2016年1月1日-2017年12月31日吉安市4个国控站PM2.5、PM10、SO2、NO2、CO和O3逐时资料与吉水、吉安县、泰和及峡江站同期气象数据,并结合OMI遥感数据进行分析,同时对个例进行深入诊断分析。结果表明:相比2016年,2017年PM2.5、PM10、SO2、O3年均浓度分别上升15.4%、13.9%、7.3%、21.9%,NO2与CO分别下降6.3%、22.2%,颗粒物与臭氧复合型污染日趋严重。统计分析表明,吉安市山谷风日共计241天,占总天数33.0%,山谷风导致该城市重污染日,山谷风日吉安市SO2及NO2浓度变化与城区以外的电厂燃煤排放有关。从污染个例分析入手,进一步验证了山谷风日市区SO2日变化与城区以外的电厂燃煤排放有关。
To understand the mountain terrain effects on urban air pollution status,select Ja’an city of Jiangxi province as a typical study,the data of air pollutions PM2.5、PM10、SO2、NO2、CO and O3 in 4 state controlling air monitoring stations of Ja’an city from January 1,2016 to December 31,2017 and meteorological data of Jishui、Ji’an country、Taihe and Xiajiang stations in the same period were statically,conjoint analysis OMI data meanwhile individual case are deep analy-sis.The results indicated that O3 generation in Ji’an city was limited by NOx from 2014 to 2016,compared with 2016,2017 annual PM2.5 and PM10,SO2,O3 concentration rose by an annual rate of 15.4%,13.9%,7.3%,21.9%,NO2 and CO fell 6.3%and 22.2%respectively,particulate matter and ozone compound pollution is increasingly serious.Due to the energy structure of Ja’an city,coal-fired pollution is still prominent.From the analysis of individual cases of pollu-tion,found that the significantly higher SO2 concentration in Ja’an downtown was related to the mountain valley wind os-cillation.Statistical analyses suggested mountain valley wind caused heavy pollution days,mountain valley wind totaled 241d,accounting for 33.0%of total days,the variation of SO2 and NO2 concentration at Ji’an city is directly related to the coal burning emission from power plants outside the urban area.From pollution case analysis,further prove the city daily variation of SO2 is associated with the coal burning emission from power plants outside the urban area.
作者
张潇
孙扬
韩琳
桂柯
艾洁
张磊
廖婷婷
ZHANG Xiao;SUN Yang;HAN Lin;GUI Ke;AI Jie;ZHANG Lei;LIAO Tingting(College of Atmospheric Science,Chengdu University of Information Technology,Chengdu 610225,China;Institute of Atmospheric Physics,Chinese Academy of Science,Beijing 100029,China;Institute of Atmospheric Composition,Chinese Research Academy of Mete-orological Sciences,Beijing 100081,China;Nanjing University of Information Science and Technology,Nanjing 210044)
出处
《成都信息工程大学学报》
2020年第2期203-213,共11页
Journal of Chengdu University of Information Technology
基金
国家自然科学基金资助项目(41505112)
天津市科技计划城市合作资助项目(15YFYSSF00030)
四川省教育厅资助项目(15ZA0191)
成都信息工程学院人才引进科学研究创新基地项目(376309)对本文的资助。
关键词
大气化学
大气物理与大气环境
大气污染状况
山谷风
燃煤
atmospheric chemistry
atmospheric physics and atmospheric environment
air pollution status
mountain val-ley wind
coal combustion
