DOI: 10.1016/j.atmosenv.2014.02.052
Scopus记录号: 2-s2.0-84895752315
论文题名: Continuous measurement of black carbon aerosol in urban Nanjing of Yangtze River Delta, China
作者: Zhuang B ; L ; , Wang T ; J ; , Liu J ; , Li S ; , Xie M ; , Yang X ; Q ; , Fu C ; B ; , Sun J ; N ; , Yin C ; Q ; , Liao J ; B ; , Zhu J ; L ; , Zhang Y
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 89 起始页码: 415
结束页码: 424
语种: 英语
英文关键词: Black carbon aerosol
; Concentration
; Pollution episode
; Temporal variations
; Yangtze river delta
Scopus关键词: Coal combustion
; Coal industry
; Concentration (process)
; Fog
; Particulate emissions
; River pollution
; Atmospheric environment
; Black carbon aerosol
; Continuous measurements
; Correlation coefficient
; Maximum frequency
; Pollution episodes
; Temporal variation
; Yangtze river delta
; Climate change
; biofuel
; black carbon
; aerosol composition
; atmospheric pollution
; biomass burning
; black carbon
; combustion
; concentration (composition)
; emission inventory
; pollution monitoring
; seasonality
; temporal variation
; trace gas
; urban atmosphere
; aerosol
; air pollution
; article
; autumn
; China
; circadian rhythm
; combustion
; concentration (parameters)
; measurement
; priority journal
; river
; rural area
; seasonal variation
; spring
; summer
; urban area
; winter
; China
; Jiangsu
; Nanjing [Jiangsu]
; Yangtze Delta
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: As a short-lived climate forcing agent, black carbon (BC) aerosol plays an important role in climate change, atmospheric environment, and human health. In this study, continuous measurements of BC and trace gases were made at an urban site in Nanjing, Yangtze River Delta (YRD) of China in 2012. The annual mean BC concentration in Nanjing was found to be 4157±2626ng/m3, with a range of 221-24,686ng/m3. The value was much lower than that in most megacities of China and also lower than that in LinAn, a rural site in YRD. BC concentrations in Nanjing showed strong seasonality, high in spring and autumn and low in summer. The concentrations also varied diurnally, high at rush hours and low in the afternoon. The diurnal cycles of BC loadings in winter to spring 2012 were similar to those in 2011 in magnitude and shape. BC concentrations followed a typical lognormal pattern, with over 75% of data samples between 1000 and 6000ng/m3. The maximum frequency occurred in low BC concentrations in summer and high BC concentrations in other seasons. In Nanjing, high levels of BC were mainly caused by local and regional emissions. Low levels of BC were mostly associated with winds from northern and eastern directions of Nanjing. BC and CO varied similarly with season, having a correlation coefficient over 0.7 in most seasons. Annual mean δBC/δCO was about 7ng/m3/ppb, implying that the sources of the BC likely came from combustions of bio-fuel, industry-coal, and vehicle-gasoline. Serious pollution episodes with high levels of BC were detected in early June at the site. Analysis suggested that the episodes were due to biomass burning in northwestern region of Nanjing. During this period, δBC/δCO reached about 9.7ng/m3/ppb and much higher BC levels were found at mid-night. © 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81316
Appears in Collections: 气候变化事实与影响
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作者单位: School of Atmospheric Sciences, Nanjing University, Hankou Rd. 22, Nanjing, China; University of Toronto, Toronto M5S 3G3, Canada
Recommended Citation:
Zhuang B,L,, Wang T,et al. Continuous measurement of black carbon aerosol in urban Nanjing of Yangtze River Delta, China[J]. Atmospheric Environment,2014-01-01,89