【摘 要】
：
Using the visibility data during 2010 to 2012 obtained at Shenyang Atmosphere Observation Center,the relationships between visibility,PM mass concentration and meteorological elements were statistical
【机 构】
：
Key Laboratory for Atmospheric Chemistry(LAC), Institute of Atmospheric Composition.Chinese Academy
【出 处】
：
第十一届全国气溶胶会议暨第十届海峡两岸气溶胶技术研讨会
论文部分内容阅读
Using the visibility data during 2010 to 2012 obtained at Shenyang Atmosphere Observation Center,the relationships between visibility,PM mass concentration and meteorological elements were statistically analyzed.The results show that: The monthly averaged visibility over Shenyang is higher in March and September with values about 19.0±4.3km and 17.1±4.3km,respectively.Low visibilities over Shenyang occur in January about 11.0±4.7km.Among the meteorological elements,wind speed was the main meteorological factor that influenced visibility and the PM mass concentrations.The number of days with visibility >19.0 km and visibility <10.0 km in Shenyang are 59,123,145 and 132,119,121 from 2010 to 2012.The relationship between visibility and PM indicated that human activities are already main sources of the pollutants,especially the fine particles which is the most important factor for the deterioration of visibility.The study shows an obvious diurnal variation and weekend effect of visibility and PM which are mainly due to human activities.
其他文献
With an Aerodyne Aerosol Chemical Speciation Monitor,we mainly focused on the variation of NR_PM1 species,its inorganic species formation and its effect on visibility impairment under a stable atmosph
本研究利用正矩阵因子法(Positive Matrix Factorization,PMF)以及其他辅助来源分析之相关理论分析台湾北部都会地区三空气品质测站:中山、新庄及竹东测站,三种微粒(PM10、PM2.5及PM0.1)之污染来源。本研究使用的数据为交大环工所蔡春进教授研究团队的成果,其微粒的采样系利用双道采样器(Dichotomous PM10 samplers)、微孔均匀沉降微粒采样器(M
The chemical characteristics of PM2.5 from Xian urban area in January and February 2006 and the same period of 2010 were determined in this study.Chemical mass closure analyses were carried out in PM2
Using the data of size resolved aerosol mass concentration and chemical composition obtained at LinAn regional background air pollution monitoring station in Yangtze River delta region of eastern chin
湖南是我国有名的“有色冶炼之乡”,有色冶炼排放的废气成为我国大气重金属的主要来源之一。为了了解铅锌冶炼所排放的废气中典型重金属元素组分,在湖南省中部某铅锌冶炼工业区周边及铅锌冶炼企业进行了大气颗粒物样品采集及分析。研究表明,位于铅锌冶炼工业区下风向的采样点大气颗粒物中镉(Cd)、铅(Pb)和砷(As)的浓度明显高于其它站点,而铬(Cr)浓度与其它站点相差不大;粒径分布也表明,颗粒物、Cd、Pb和A
为了更加准确地反映我国区域大尺度的环境空气质量状况,掌握我国环境空气污染物的区域输送情况,国家环境监测总站在山东省长岛县砣矶岛设立国家大气背景监测站山东长岛站,此站点是全国建设的14个背景站中唯一的示范站。砣矶岛站位于胶东、辽东半岛之间,黄、渤海交界处,东与韩国、日本隔海相望,且受长距离传输影响显著,PM2.5来源及组分复杂,对研究东南亚地区污染物迁徙规律具有重要作用。从2011年11月份开始在砣
PM10 samples were simultaneously collected in six sampling sites during spring,summer,autumn and winter in 2010,and then their chemical composition,including elements of Ti,Mn,Fe,Zn,As and Pb,water-so
A unique set of soil samples were collected to analyze the chemical composition and source characterization of Fugitive Dust over Xian city,namely,2 soil dust samples,19(4) paved road dust samples,53(
2013年1月中国中东部地区发生了多次持续雾霾天气,对人体健康、交通运输、日常生活以及生态环境造成了严重影响.本文选取1月27-31日华北平原地区持续5天的雾霾天气进行分析,并利用气象化学在线耦合模式WRF-Chem对持续雾霾期间的PM2.5浓度以及气象要素进行模拟研究.结果表明,区域雾霾过程期间华北平原高空以平直纬向环流为主,地面多为弱气压场,低层空气湿度大,并有强逆温存在且维持时间比较长,造成
本研究在2007年污染源普查数据基础上,结合统计年鉴中工业消耗数据进行动态更新,以2009年为基准年,从工业活动、居民生活等多个方面对福建省大气污染物SO2、NOx、PM2.5、VOCs和NH3在内的大气污染物的排放量进行估算,建立了福建省大气污染物排放清单。结果显示,污染物排放较高的地区主要集中在沿海区域,如福州、泉州和漳州,而植被覆盖率高南平和三明的VOCs排放量也较高。工业排放是SO2的主要