Estimating the effects of meteorology on PM_2.5 reduction during the 2008 Summer Olympic Games in Beijing, China

Abstract

Particulate pollution was a critical challenge to the promise of good air quality during the 2008 Beijing Olympic Games, which took place from August 8th to 24th. To ensure good air quality for the Games, several temporary emission control measures were implemented in Beijing and surrounding areas. Ambient particulate matter concentration decreased significantly during the Olympic period; however, it is difficult to distinguish the effectiveness of those control measures since meteorology also affects ambient PM_2.5 concentration. In this work, a multiple linear regression model based on continuous field monitoring at a roadside site was conducted to evaluate the effects of meteorology and emission control measures on the reduction of PM_2.5 during the 2008 Olympic Games. The hourly data set was divided into two time periods, the no control period, June 22nd to July 4th, and the control period, July 28th to August 21st. The response variable was PM_2.5 and the meteorology covariates used in the model were hourly temperature, dew point temperature, wind speed and precipitation. Wind direction was not a significant predictor of PM_2.5 levels in either the control or the no control period. Using the meteorologically-based regression coefficients from the two time periods, meteorology was found to contribute to at least a 16% reduction in PM_2.5 levels in the roadside microenvironment; while the pollution control measures contributed to at least a 43% reduction in PM_2.5 levels.

Keywords

meteorology / emission control measures / Beijing Olympic Games / PM_2.5 / linear statistical models

References

[1] Beijing Municipal Environmental Protection Bureau. Beijing Environmental Statement 1999.Beijing: China Environmental Science Press, 2000 (in Chinese)

[2] Wu Y, Wang R J, Zhou Y, Lin B H, Fu L X, He K B, Hao J M. On-road vehicle emission control in Beijing: past, present and future. Environmental Science & Technology, 2011, 45(1): 147–153

[3] Wang S, Zhao M, Xing J, Wu Y, Zhou Y, Lei Y, He K, Fu L, Hao J. Quantifying the air pollutants emission reduction during the 2008 Olympic games in Beijing. Environmental Science & Technology, 2010, 44(7): 2490–2496

[4] Zhou Y, Wu Y, Yang L, Fu L, He K, Wang S, Hao J, Chen J, Li C. The impact of transportation control measures on emission reductions during the 2008 Olympic Games in Beijing, China. Atmospheric Environment, 2010, 44(3): 285–293

[5] Beijing Municipal Environmental Protection Bureau. Beijing Environmental Statement 2008.Beijing: China Environmental Science Press, 2009

[6] Sun J, Zhang Q, Canagaratna M R, Zhang Y, Nga N L, Sun Y, Jayne J T, Zhang X, Zhang X, Worsnop D R. Highly time- and size-resolved characterization of submicron aerosol particles in Beijing using an Aerodyne Aerosol Mass Spectrometer. Atmospheric Environment, 2010, 44(1): 131–140

[7] Wang W, Primbs T, Tao S, Simonich S L. Atmospheric particulate matter pollution during the 2008 Beijing Olympics. Environmental Science & Technology, 2009, 43(14): 5314–5320

[8] Wang X, Westerdahl D, Chen L C, Wu Y, Hao J, Pan X, Guo X, Zhang K M. Evaluating the air quality impacts of the 2008 Beijing Olympic Games: on-road emission factors and black carbon profiles. Atmospheric Environment, 2009, 43(30): 4535–4543

[9] Yang L, Wu Y, Song S J, Hao J M. Chemical characteristics of particulate matter at major road locations in Beijing, China. In: Proceedings of the A&WMA’s 102nd Annual Conference & Exhibition, 2009, Detroit. Pittsburgh: Air &Waste Management Association, 2009, 35

[10] Fang G C, Wu Y S, Chang S Y, Huang S, Rau J. Size distributions of ambient air particles and enrichment factor analyses of metallic elements at Taichung Harbor near the Taiwan Strait. Atmospheric Research, 2006, 81(4): 320–333

[11] Massey Simonich S L.Response to comments on “Atmospheric particulate matter pollution during the 2008 Beijing Olympics”. Environmental Science & Technology, 2009, 43(19): 7590–7591

[12] Tang X, Shao M, Hu M, Wang Z, Zhang J. Comment on “Atmospheric particulate matter pollution during the 2008 Beijing Olympics”. Environmental Science & Technology, 2009, 43(19): 7588, author reply 7590–7591

[13] Wang T, Gao J, Nie W, Xue L, Gao X, Steven P, Wang J, Gao R, Ravi P, Wang X, Qiu J, Ding A, Shou Y, Wang L, Yuan C, Xu P, Zhang J, Xu Z, Yu Y, Wang X, Zhang Q, Chai F, Wang W. Effect of anti-pollution measures and meteorology on air quality during the Beijing Olympic Games—an overview of the results from surface and satellite measurements. In: Proceedings of the 11th International Conference on Atmospheric Science and Applications of Air Quality 2009, Ji’nan. Ji’nan: Shandong University Press, 2009, 77

[14] Yao X, Xu X, Sabaliauskas K, Fang M. Comment on “Atmospheric particulate matter pollution during the 2008 Beijing Olympics”. Environmental Science & Technology, 2009, 43(19): 7589, author reply 7590–7591

[15] Beijing Municipal Bureau of Statistics. Beijing Statistical Yearbook 2008. Beijing: China Statistics Press, 2009 (in Chinese)

[16] Stull R B. Meteorology for Scientists and Engineers. Pacific Grove (CA): Brooks/Cole Publishing Company, 2000

[17] Yanosky J D, Williams P L, MacIntosh D L. A comparison of two direct-reading aerosol monitors with the federal reference method for PM_2.5 in indoor air. Atmospheric Environment, 2002, 36(1): 107–113

[18] Park J M, Rock J C, Wang L, Seo Y, Bhatnagar A, Kim S. Performance evaluation of six different aerosol samplers in a particulate matter generation chamber. Atmospheric Environment, 2009, 43(2): 280–289

[19] Kingham S, Durand M, Aberkane T, Harrison J, Gaines Wilson J, Epton M. Winter comparison of TEOM, MiniVol and DustTrak PM₁₀ monitors in a woodsmoke environment. Atmospheric Environment, 2006, 40(2): 338–347

[20] Monahan J F. A Primer on Linear Models. New York: Chapman & Hall/CRC, 2008

[21] Belsley D A. Conditioning Diagnostics: Collinearity and Weak Data in Regression. New York: John Wiley, 1991

[22] Holton J R. An Introduction to Dynamic Meteorology. San Diego: Academic Press, 1992

[23] Giroux M, Esclassan J, Arnaud C, Chale J. Analysis of levels of nitrates and derivatives of ammonia in an urban atmosphere. The Science of the Total Environment, 1997, 196(3): 247–254

[24] Russell A G, McRae G J, Cass G R. Mathematical modeling of the formation and transport of ammonium nitrate aerosol. Atmospheric Environment, 1983, 17(5): 949–964

[25] Stelson A W, Seinfeld J H. Relative humidity and temperature dependence of the ammonium nitrate dissociation constant. Atmospheric Environment, 1982, 16(5): 983–992

[26] Kong Q, Wu Y, Yang L, Du X, Zhou Y, Fu L X. Characteristics and intake dose of gaseous pollutants near a major Beijing road during the 29th Olympic Games. Acta Scientiae Circumstantiae, 2010, 30(2): 281–286 (in Chinese)

[27] Hanel G, Landsberg H E, van Mieghem J. The Properties of atmospheric aerosol particles as functions of the relative humidity at thermodynamic equilibrium with the surrounding moist air. In: Landsberg H E, van Mieghem J, eds. Advances in Geophysics. San Diego, CA: Academic Press, 1976, 73–188

[28] McMurry P H, Stolzenburg M R. On the sensitivity of particle size to relative humidity for Los Angeles aerosols. Atmospheric Environment, 1989, 23(2): 497–507

[29] Pillai P S, Suresh S, Krishna Moorthy K. A study of PM, PM₁₀ and PM_2.5 concentration at a tropical coastal station. Atmospheric Research, 2002, 61(2): 149–167

[30] Kang C M, Lee H S, Kang B W, Lee S K, Sunwoo Y. Chemical characteristics of acidic gas pollutions and PM_2.5 species during the hazy episodes in Seoul, South Korea. Atmospheric Environment, 2004, 38(28): 4749–4760

[31] Sun Y, Zhuang G, Tang A A, Wang Y, An Z. Chemical characteristics of PM_2.5 and PM₁₀ in haze-fog episodes in Beijing. Environmental Science & Technology, 2006, 40(10): 3148–3155

[32] Chan S H, Zhu J. Exhaust emissions based air–fuel ratio model (I): literature reviews and modeling. SAE Transactions, 1996, 105(4): 408–417

[33] Jamriska M, Morawska L, Mergersen K. The effect of temperature and humidity on size segregated traffic exhaust particle emissions. Atmospheric Environment, 2008, 42(10): 2369–2382

[34] Kubesh J T, Podnar D J. Humidity effects and compensation in a lean burn natural gas engine. In: Proceedings of International Spring Fuels & Lubricants Meeting & Exposition 1997, Dearborn. Detroit: Society of Automotive Engineers, 1997, 33–40

[35] McCormick R L, Graboski M S, Newlin A W, Ross J D. Effect of humidity on heavy-duty transient emissions from diesel and natural gas engines at high altitude. Journal of the Air & Waste Management Association (1995), 1997, 47(7): 784–791

[36] Zhang K M, Wexler A S, Zhu Y F, Hinds W C, Sioutas C. Evolution of particle number distribution near roadways—Part II: the “Road-to-Ambient” process. Atmospheric Environment, 2004, 38(38): 6655–6665

[37] Wu Y, Hao J M, Fu L X, Wang Z S, Tang U. Vertical and horizontal profiles of airborne particulate matter near major roads in Macao, China. Atmospheric Environment, 2002, 36(31): 4907–4918

[38] Hitchins J, Morawska L, Wolff R, Gilbert D. Concentrations of submicrometre particles from vehicle emissions near a major road. Atmospheric Environment, 2000, 34(1): 51–59

[39] Wu Y, Hao J M, Fu L X, Hu J, Wang Z, Tang U. Chemical characteristics of airborne particulate matter near major roads and at background locations in Macao, China. The Science of the Total Environment, 2003, 317(1–3): 159–172

[40] Gietl J K, Klemm O. Analysis of traffic and meteorology on airborne particulate matter in Münster, northwest Germany. Journal of the Air & Waste Management Association (1995), 2009, 59(7): 809–818

[41] Arya S. Introduction to Micrometeorology. 2nd ed. San Diego: Academic Press, 2001

[42] Wang F, Chen D S, Li J B, Li M J, Ren Z H. Identification of regional atmospheric PM₁₀ transport pathway using HYSPLIT, MM5-CMAQ, and synopic pressure pattern analysis. Environmental Modelling & Software, 2010, 25(8): 927–934

[43] Chambers J M, Cleveland W S, Kleiner B, Tukey P A. Graphical Methods for Data Analysis. Boston: Duxbury Press, 1983

[44] Wang Y X, Hao J M, McElroy M B, Munger J W, Ma H, Chen D, Nielsen C P. Ozone air quality during the 2008 Beijing Olympics: Effectiveness of emission restrictions. Atmospheric Chemistry and Physics, 2009, 9(14): 5237–5251

[45] Garcia V C, Foley K M, Gego E, Holland D M, Rao S T. A comparison of statistical techniques for combining modeled and observed concentrations to create high-resolution ozone air quality surfaces. Journal of the Air & Waste Management Association (1995), 2010, 60(5): 586–595

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