Long-range transport and regional sources of PM2.5 in Beijing based on long-term observations from 2005 to 2010

Abstract Haze pollution in Beijing is rather deteriorated. Long-term measurement of PM 2.5 from 2005 to 2010 at an urban site in Beijing showed very high concentration level with an annual average 74 ± 55 μg/m 3 . The contribution of regional sources is one of the most important factors; thus, transport and regional sources of PM 2.5 in Beijing are investigated using the trajectory cluster and receptor models (potential source contribution function and trajectory sector analysis). The results indicated that the highest concentrations of PM 2.5 (76–120 μg/m 3 ) were associated with south, southeast, and short northwest trajectories, and moderate concentrations (46–67 μg/m 3 ) with long northwest and short north trajectories, and the lowest concentrations (20–33 μg/m 3 ) with long north trajectories. During the relatively polluted periods, the probable locations of regional emission sources were mainly in the south and the west of Beijing and varied according to different seasons. Between 2005 and 2010, the annual mean contribution of 35.5% (32.8 μg/m 3 ) for PM 2.5 was attributed to long-distance transportation. The transported contribution percentages from 2005 to 2010 for PM 2.5 showed an increasing tendency with a linear rate of 1.2/year.

[1]  Renjian Zhang,et al.  Chemical characterization and source apportionment of PM 2 . 5 in Beijing : seasonal perspective , 2013 .

[2]  Yuesi Wang,et al.  Vertical observations and analysis of PM2.5, O3, and NOx at Beijing and Tianjin from towers during summer and Autumn 2006 , 2010 .

[3]  Nikos Mihalopoulos,et al.  Origin and source regions of PM10 in the Eastern Mediterranean atmosphere , 2009 .

[4]  P. Monks,et al.  Review : Untangling the influence of air-mass history in interpreting observed atmospheric composition , 2012 .

[5]  Yuesi Wang,et al.  A novel technique for quantifying the regional component of urban aerosol solely from its sawtooth cycles , 2008 .

[6]  Qiang Zhang,et al.  The challenge of improving visibility in Beijing , 2010 .

[7]  R. Hites,et al.  Effects of wind and air trajectory directions on atmospheric concentrations of persistent organic pollutants near the Great Lakes. , 2005, Environmental Science and Technology.

[8]  Dorothy K. Hall,et al.  The aerosol at Barrow, Alaska: long-term trends and source locations , 1999 .

[9]  W. Meng,et al.  Seasonal and diurnal variations of ambient PM2.5 concentration in urban and rural environments in Beijing , 2009 .

[10]  W. Nie,et al.  Highly Time-Resolved Measurements of Secondary Ions in PM2.5 during the 2008 Beijing Olympics: The Impacts of Control Measures and Regional Transport , 2013 .

[11]  Binyu Wang,et al.  Air quality during the 2008 Beijing Olympic Games , 2007 .

[12]  Tao Song,et al.  Analysis of heavy pollution episodes in selected cities of northern China , 2012 .

[13]  Xiaobin Xu,et al.  Characteristics of gaseous pollutants at Gucheng, a rural site southwest of Beijing , 2009 .

[14]  Shuiyuan Cheng,et al.  An integrated MM5–CMAQ modeling approach for assessing trans-boundary PM10 contribution to the host city of 2008 Olympic summer games—Beijing, China , 2007 .

[15]  W. Meng,et al.  Scattering properties of the atmospheric aerosol in Beijing, China , 2011 .

[16]  J. Mao,et al.  Relationships between submicrometer particulate air pollution and air mass history in Beijing, China, 2004-2006 , 2008 .

[17]  Yan Yin,et al.  A comparative analysis of aerosol properties in dust and haze-fog days in a Chinese urban region , 2011 .

[18]  Wang Yue-si,et al.  Measurement of the vertical profile of atmospheric SO2 during the heating period in Beijing on days of high air pollution , 2009 .

[19]  P. Zhao,et al.  Long-term visibility trends and characteristics in the region of Beijing, Tianjin, and Hebei, China , 2011 .

[20]  F. Karaca,et al.  Long-range potential source contributions of episodic aerosol events to PM10 profile of a megacity , 2009 .

[21]  S. Shen,et al.  An approach to quantify the heat wave strength and price a heat derivative for risk hedging , 2012, Advances in Atmospheric Sciences.

[22]  Y. Q. Wang,et al.  TrajStat: GIS-based software that uses various trajectory statistical analysis methods to identify potential sources from long-term air pollution measurement data , 2009, Environ. Model. Softw..

[23]  D. Blake,et al.  Air quality during the 2008 Beijing Olympics: secondary pollutants and regional impact , 2010 .

[24]  J. Xin,et al.  Mechanism for the formation of the January 2013 heavy haze pollution episode over central and eastern China , 2014 .

[25]  Xiaochuan Pan,et al.  The acute effects of fine particles on respiratory mortality and morbidity in Beijing, 2004–2009 , 2013, Environmental Science and Pollution Research.

[26]  Min Hu,et al.  Size-resolved aerosol water-soluble ionic compositions in the summer of Beijing: implication of regional secondary formation , 2009 .

[27]  Z. Ouyang,et al.  Ambient air quality trends and driving factor analysis in Beijing, 1983-2007. , 2011, Journal of environmental sciences.

[28]  A. Piazzalunga,et al.  High secondary aerosol contribution to particulate pollution during haze events in China , 2014, Nature.

[29]  Hong Wang,et al.  A multisource observation study of the severe prolonged regional haze episode over eastern China in January 2013 , 2014 .

[30]  Zifa Wang,et al.  The air-borne particulate pollution in Beijing—concentration, composition, distribution and sources , 2004 .

[31]  A Riccio,et al.  The application of a trajectory classification procedure to interpret air pollution measurements in the urban area of Naples (Southern Italy). , 2007, The Science of the total environment.

[32]  Yuan Cheng,et al.  Exploring the severe winter haze in Beijing , 2014 .

[33]  Ying Wang,et al.  Chemical characteristics of PM2.5 and PM10 in haze-fog episodes in Beijing. , 2006, Environmental science & technology.

[34]  P. Hopke,et al.  Evaluation of the potential source contribution function using the 2002 Quebec forest fire episode , 2005 .

[35]  Jinbin Cao,et al.  The transport pathways and sources of PM10 pollution in Beijing during spring 2001, 2002 and 2003 , 2004 .

[36]  Noor-A-Faiza Barsha,et al.  Analyzing Regional Inluence of Particulate Matter on the City of Beijing, China , 2008 .

[37]  Yuesi Wang,et al.  The vertical distribution of PM2.5 and boundary-layer structure during summer haze in Beijing , 2013 .

[38]  Klaus Schäfer,et al.  Evaluation of continuous ceilometer-based mixing layer heights and correlations with PM2.5 concentrations in Beijing , 2009, Remote Sensing.

[39]  Andrea Pozzer,et al.  Interactive comment on “A high-resolution emission inventory of primary pollutants for the Huabei region, China” by B. Zhao et al , 2011 .

[40]  Jinyuan Xin,et al.  The empirical relationship between the PM2.5 concentration and aerosol optical depth over the background of North China from 2009 to 2011 , 2014 .

[41]  Nguyen Thi Kim Oanh,et al.  Assessment of potential long-range transport of particulate air pollution using trajectory modeling and monitoring data , 2007 .

[42]  F. Karaca,et al.  Prediction of sources of metal pollution in rainwater in Istanbul, Turkey using factor analysis and long-range transport models , 2010 .

[43]  Meng Zhang,et al.  Photochemical properties and source of pollutants during continuous pollution episodes in Beijing, October, 2011. , 2014, Journal of environmental sciences.

[44]  X. Xia,et al.  Analysis of the dependence of column-integrated aerosol properties on long-range transport of air masses in Beijing , 2007 .

[45]  Zifa Wang,et al.  Variation of sources and mixing mechanism of mineral dust with pollution aerosol—revealed by the two peaks of a super dust storm in Beijing , 2007 .

[46]  Yu Song,et al.  Transport pathways and potential sources of PM10 in Beijing , 2011 .

[47]  Yu Song,et al.  A health-based assessment of particulate air pollution in urban areas of Beijing in 2000–2004 , 2007, Science of The Total Environment.

[48]  Han-qing Kang,et al.  Analysis of a long-lasting haze episode in Nanjing, China , 2013 .

[49]  Yuesi Wang,et al.  Reductions of PM2.5 in Beijing-Tianjin-Hebei urban agglomerations during the 2008 Olympic Games , 2012, Advances in Atmospheric Sciences.

[50]  P. Hopke,et al.  Source regions for atmospheric aerosol measured at Barrow, Alaska. , 2001, Environmental science & technology.

[51]  Willy Z. Sadeh,et al.  A residence time probability analysis of sulfur concentrations at grand Canyon national park , 1985 .

[52]  Yuesi Wang,et al.  Variability and reduction of atmospheric pollutants in Beijing and its surrounding area during the Beijing 2008 Olympic Games , 2010 .

[53]  Jianlei Lang,et al.  A Monitoring and Modeling Study to Investigate Regional Transport and Characteristics of PM2.5 Pollution , 2013 .

[54]  A. Bari,et al.  Regional sources of particulate sulfate, SO2, PM2.5, HCl, and HNO3, in New York, NY , 2003 .

[55]  J. Roger,et al.  Impact of vertical atmospheric structure on Beijing aerosol distribution , 2006 .