References

ACP

Atmospheric Chemistry and Physics

ACP

1680-7324

Copernicus GmbH

Göttingen, Germany

10.5194/acp-10-7603-2010

Air quality during the 2008 Beijing Olympics: secondary pollutants and regional impact

Wang

¹ ² ³ Nie

¹ ² Gao

³ Xue

L. K.

¹ ² Gao

X. M.

¹ ² Wang

X. F.

¹ ² Qiu

¹ Poon

C. N.

¹ Meinardi

⁴ Blake

⁴ Wang

S. L.

³ Ding

A. J.

¹ Chai

F. H.

³ Zhang

Q. Z.

² Wang

W. X.

² ³

Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hong Kong, China

Environment Research Institute, Shandong University, Jinan, China

Chinese Research Academy of Environmental Sciences, Beijing, China

Department of Chemistry, University of California at Irvine, Irvine, USA

16 08 2010

10 16 7603 7615

This is an open-access article ditributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

This article is available from http://www.atmos-chem-phys.net/10/7603/2010/acp-10-7603-2010.html

The full text article is available as a PDF file from http://www.atmos-chem-phys.net/10/7603/2010/acp-10-7603-2010.pdf

This paper presents the first results of the measurements of trace gases and aerosols at three surface sites in and outside Beijing before and during the 2008 Olympics. The official air pollution index near the Olympic Stadium and the data from our nearby site revealed an obvious association between air quality and meteorology and different responses of secondary and primary pollutants to the control measures. Ambient concentrations of vehicle-related nitrogen oxides (NOx) and volatile organic compounds (VOCs) at an urban site dropped by 25% and 20–45% in the first two weeks after full control was put in place, but the levels of ozone, sulfate and nitrate in PM2.5 increased by 16%, 64%, 37%, respectively, compared to the period prior to the full control; wind data and back trajectories indicated the contribution of regional pollution from the North China Plain. Air quality (for both primary and secondary pollutants) improved significantly during the Games, which were also associated with the changes in weather conditions (prolonged rainfall, decreased temperature, and more frequent air masses from clean regions). A comparison of the ozone data at three sites on eight ozone-pollution days, when the air masses were from the southeast-south-southwest sector, showed that regional pollution sources contributed >34–88% to the peak ozone concentrations at the urban site in Beijing. Regional sources also contributed significantly to the CO concentrations in urban Beijing. Ozone production efficiencies at two sites were low (~3 ppbv/ppbv), indicating that ozone formation was being controlled by VOCs. Compared with data collected in 2005 at a downwind site, the concentrations of ozone, sulfur dioxide (SO2), total sulfur (SO2+PM2.5 sulfate), carbon monoxide (CO), reactive aromatics (toluene and xylenes) sharply decreased (by 8–64%) in 2008, but no significant changes were observed for the concentrations of PM2.5, fine sulfate, total odd reactive nitrogen (NOy), and longer lived alkanes and benzene. We suggest that these results indicate the success of the government's efforts in reducing emissions of SO2, CO, and VOCs in Beijing, but increased regional emissions during 2005–2008. More stringent control of regional emissions will be needed for significant reductions of ozone and fine particulate pollution in Beijing.

References 1

An, X., Zhu, T., Wang, Z., Li, C., and Wang, Y.: A modeling analysis of a heavy air pollution episode occurred in Beijing, Atmos. Chem. Phys., 7(12), 3103–3114, doi:10.5194/acp-7-3103-2007, 2007.

Cermak, J. and Knutti, R.: Beijing Olympics as an aerosol field experiment, Geophys. Res. Lett., 36, L10806, doi:10.1029/2009GL038572, 2009.

Chen, D. S., Cheng, S. Y., Liu, L., Chen, T., and Guo, X. R.: An integrated MM5-CMAQ modeling approach for assessing trans-boundary PM$_10$ contribution to the host city of 2008 Olympic summer games – Beijing, China, Atmos. Environ., 41 (6), 1237–1250, 2007.

Chou, C. C. K., Tsai, C. Y., Shiu, C. J., Liu, S. C., and Zhu, T.: Measurement of NOy during Campaign of Air Quality Research in Beijing 2006 (CAREBeijing-2006): Implications for the ozone production efficiency of NOx, J. Geophys. Res.-Atmos., 114, D00G01, doi:10.1029/2008JD010446, 2009.

Colman, J. J., Swanson, A. L., Meinardi, S., Sive, B. C., Blake, D. R., and Rowland, F. S.: Description of the analysis of a wide range of volatile organic compounds in whole air samples collected during PEM-Tropics A and B, Anal. Chem., 73 (15), 3723–3731, 2001.

Daum, P. H., Kleinman, L. I., Springston, S. R., Nunnermacker, L. J., Lee, Y. N., Weinstein-Lloyd, J., Zheng, J., and Berkowitz, C. M.: Origin and properties of plumes of high ozone observed during the Texas 2000 Air Quality Study (TexAQS 2000), J. Geophys. Res.-Atmos., 109, D17306, doi:10.1029/2003JD004311, 2004.

Guo, S., Hu, M., Wang, Z. B., and Zhao, Y. L.: Size-resolved aerosol water-soluble ionic compositions in the summer of Beijing: implication of regional secondary formation, Atmos. Chem. Phys., 10, 947–959, doi:10.5194/acp-10-947-2010, 2010.

Hirsch, R. M. and Gilroy, E. J.: Methods of fitting a straight line to data: examples in water resources, Water Res. Bull., 20(5), 705–711, 1984.

Jia, Y. T., Rahn, K. A., He, K. B., Wen, T. X., and Wang, Y. S.: A novel technique for quantifying the regional component of urban aerosol solely from its sawtooth cycles, Geophys. Res. Lett., 113, D21309, doi:10.1029/2008JD010389, 2008.

Lin, W. L., Xu, X. B., and Zhang, X. C.: Characteristics of gaseous pollutants at Gucheng, a rural site southwest of Beijing, J. Geophys. Res.-Atmos., 114, D00G14, doi:10.1029/2008JD01 0339, 2009.

Liu, J. F., Mu, Y. J., Zhang, Y. J., Zhang, Z. M., Wang, X. K., Liu, Y. J., and Sun, Z. Q.: Atmospheric levels of BTEX compounds during the 2008 Olympic Games in the urban area of Beijing, Sci. Total Environ., 408, 109–116, 2009.

Mijling, B., van der A, R. J., Boersma, K. F., Van Roozendael, M., De Smedt, I., and Kelder, H. M.: Reductions of NO2 detected from space during the 2008 Beijing Olympic Games, Geophys. Res. Lett., 36, L13801, doi:10.1029/2009GL038943, 2009.

NBSC, National Bureau of Statistics of China: China Statistical Yearbook, 2006–2009, China Statistics Press: Beijing, 2006–2009.

Nunnermacker, L. J., Imre, D., Daum, P. H., Kleinman, L., Lee, Y. N., Lee, J. H., Springston, S. R., Newman, L., Weinstein-Lloyd, J., Luke, W. T., Banta, R., Alvarez, R., Senff, C., Sillman, S., Holdren, M., Keigley, G. W., and Zhou, X.: Charaterization of the Nashville urban plume on July 3 and July 18, 1995, J. Geophys. Res., 103(D21), 28129–28148, 1998.

Pathak, R. K., Wu, W. S, and Wang, T.: Summertime PM$_2.5$ ionic species in four major cities of China: nitrate formation in an ammonia-deficient atmosphere, Atmos. Chem. Phys., 9, 1711–1722, doi:10.5194/acp-9-1711-2009, 2009.

Shao, M.,Wang, B., Lu, S. H., Liu, S. C., and Chang, C. C.: Trends in summertime non-methane hydrocarbons in Beijing City, 2004–2009, IGACtivity News Letter, 42, 18–25, 2009.

Streets, D. G., Fu, J. S., Jang, C. J., Hao, J. M., He, K. B., Tang, X.Y., Zhang, Y. H., Wang, Z. F., Li, Z. P., Zhang, Q., Wang, L. T., Wang, B. Y., and Yu, C.: Air quality during the 2008 Beijing Olympic Games, Atmos. Environ., 41(3), 480-492, 2007.

Trainer, M., Parrish, D. D., Buhr, M. P., Norton, R. B., Fehsenfeld, F. C., Anlauf, K. G., Bottenheim, J. W., Tang, Y. Z., Wiebe, H. A., Roberts, J. M., Tanner, R. L., Newman, L., Bowersox, V. C., Meagher, J. F., Olszyna, K. J., Rodgers, M. O., Wang, T., Berresheim, H., Demerjian, K. L., and Roychowdhury, U. K.: Correlation of ozone with NOy in photochemically aged air, J. Geophys. Res.-Atmos., 98(D2), 2917–2915, 1993.

UNEP, United Nations Environmental Programme: Independent Environmental Assessment Beijing 2008 Plympic Games, Nairobi, Kenya, 2009, online available at: http://www.unep.org/pdf/BEIJING_REPORT_COMPLETE.pdf, last access: March 2010.

Wang, B., Shao, M., Lu, S. H., Yuan, B., Zhao, Y., Wang, M., Zhang, S. Q. and Wu. D.: Variation of ambient non-methane hydrocarbons in Beijing city in summer 2008, Atmos. Chem. Phys., 10, 5911–5923, doi:10.5194/acp-10-5911-2010, 2010a.

Wang, L. T., Hao, J. M., He, K. B., Wang, S. X., Li, J. H., Zhang, Q., Streets, D. G., Fu, J. S., Jang, C. J., Takekawa, H., and Chatani, S.: A modeling study of coarse particulate matter pollution in Beijing: Regional source contributions and control implications for the 2008 Summer Olympics, J. Air & Waste Manage. Assoc., 58 (8), 1057-1069, 2008.

Wang, M., Zhu, T., Zheng, J., Zhang, R. Y., Zhang, S. Q., Xie, X. X., Han, Y. Q., and Li, Y.: Use of a mobile laboratory to evaluate changes in on-road air pollutants during the Beijing 2008 Summer Olympics, Atmos. Chem. Phys., 9, 8247–8263, doi:10.5194/acp-9-8247-2009, 2009a.

Wang, S. X., Zhao, M., Xing, J., Wu, Y., Zhou, Y., Lei, Y., He, K. B., Fu, L. X., Hao, J. M.: Quantifying the Air Pollutants Emission Reduction during the 2008 Olympic Games in Beijing, Environ. Sci. Technol., 44(7), 2490–2496, 2010b.

Wang, T., Cheung, V. T. F., Anson, M., and Li, Y. S.: Ozone and related gaseous pollutants in the boundary layer of eastern China: Overview of the recent measurements at a rural site, Geophys. Res. Lett., 28(12), 2373–2376, 2001.

Wang, T, Ding, A. J., Gao, J., and Wu, W. S.: Strong ozone production in urban plumes from Beijing, China, Geophys. Res. Lett., 33, L21806, doi:10.1029/2006GL027689, 2006.

Wang, W. T., Primbs, T., Tao, S., and Simonich, S. L. M.: Atmospheric Particulate Matter Pollution during the 2008 Beijing Olympics, Environ. Sci. Technol., 43(14), 5314–5320, 2009b.

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

Wang, Y., Hao, J., McElroy, M. B., Munger, J. W., Ma, H., Chen, D., and Nielsen, C. P.: Ozone air quality during the 2008 Beijing Olympics-effectiveness of emission restrictions, Atmos. Chem. Phys., 9, 5237–5251, doi:10.5194/acp-9-5237-2009, 2009d.

Witte, J. C., Schoeberl, M. R., Douglass, A. R., Gleason, J. F., Krotkov, N. A., Gille, J. C., Pickering, K. E., and Livesey, N.: Satellite observations of changes in air quality during the 2008 Beijing Olympics and Paralympics, Geophys. Res. Lett., 36, L17803, doi:10.1029/2009GL039236, 2009.

Wood, E. C., Herndon, S. C., Onasch, T. B., Kroll, J. H., Canagaratna, M. R., Kolb, C. E., Worsnop, D. R., Neuman, J. A., Seila, R., Zavala, M., and Knighton, W. B.: A case study of ozone production, nitrogen oxides, and the radical budget in Mexico City, Atmos. Chem. Phys., 9, 2499–2517, doi:10.5194/acp-9-2499-2009, 2009.

Wu, W. S. and Wang, T.: On the performance of a semi-continuous PM$_2.5$ sulphate and nitrate instrument under high loadings of particulate and sulphur dioxide, Atmos. Environ., 41(26), 5442–5451, 2007.

Zaveri, R. A., Berkowitz, C. M., Kleinman, L. I., Springston, S. R., Doskey, P. V., Lonneman, W. A., and Spicer, C. W.: Ozone production efficiency and NOx depletion in an urban plume: Interpretation of field observations and implications for evaluating O3-NOx-VOC sensitivity, J. Geophys. Res.-Atmos., 108(D19), 4436, doi:10.1029/2002JD003144, 2003.

Zhang, Q., Streets, D. G., Carmichael, G. R., Huo, H., Kannari, A., Klimont, Z., Park, I. S., Reddy, S., Fu, J. S., Chen, D., Duan, L., Lei, Y., Wang, I. T., and Yao, Z. L.: Asian emissions in 2006 for the NASA INTEX-B mission, Atmos. Chem. Phys., 9 (14), 5131–5153, doi:10.5194/acp-9-5131-2009, 2009.

Zhao, Y., Wang, S. X., Duan, L., Lei, Y., Cao, P. F., and Hao, J. M.: Primary air pollutant emissions of coal-fired power plants in China: Current status and future prediction, Atmos. Environ., 42(36), 8442–8452, 2008.