- 期刊
- OpenAccess
Impact of Extreme Meteorological Events on Ozone in the Pearl River Delta, China
摘要
Along with rapid economic development in the Pearl River Delta (PRD) region of China for the past two decades, ozone (O_3) pollution has deteriorated significantly. Extreme meteorological events (EMEs), including heat wave (HW), atmospheric stagnation (AS), and temperature inversion (TI), exert significant impacts on O_3. Base on observational O_3 data and meteorological reanalysis data, we analyze the impact of EMEs on O_3 during O_3 season of April-October in 2006-2017 over the PRD. Statistical analysis indicates significant but spatially heterogeneous sensitivities of O_3 to EMEs. AS poses the largest impact on O_3 concentration over the PRD, resulting in 58% increase compared with normal days, while the increases by HW and TI are 28% and 14%, respectively. O_3 pollution events are largely initiated by HW and AS which favor formation and build-up of O_3, while O_3 pollution events are maintained mostly by persistent AS and TI. HW poses higher impacts on northern and eastern PRD, while AS impacts more on central and western PRD. The effect of AS on O_3 concentration is similar as 10 K temperature increase during non-AS days, while the effect of AS and TI on O_3 exceedance is comparable with 6 K temperature increase during non-EMEs condition. O_3 concentrations under different synoptic patterns are largely associated with the occurrence of AS, and Siberian high and the approaching of a tropical cyclone are the dominant synoptic patterns for EMEs impact on O_3 and largely determines the long-term increasing trend of O_3 concentration over the PRD. This study highlights the importance of establishing a location-specific O_3 control strategy targeting on normal conditions and O_3 pollution events separately. This study also provides scientific support to use EMEs forecast as an indicator to implement contingency O_3 control in advance so as to maximize peak O_3 reduction over the PRD.
延伸閱讀
- 程詩瑋（2005）。The study of surface ozone concentration and meteorological parameters in Tao-Yuan area〔碩士論文，國立臺灣師範大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0021-2004200718052047
- 陳昭敏（2007）。Meteorology Analysis of High Ozone Episodes Occurred in the West-Central Taiwan.〔碩士論文，國立中央大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0031-0207200917345911
- Tan, J. H., Guo, S. J., Ma, Y. L., Yang, F. M., He, K. B., Yu, Y. C., Wang, J. W., Shi, Z. B., & Chen, G. C. (2012). Non-methane Hydrocarbons and Their Ozone Formation Potentials in Foshan, China. Aerosol and Air Quality Research, 12(3), 387-398. https://www.airitilibrary.com/Article/Detail?DocID=16808584-201206-201205160020-201205160020-96-107
- Qi, B., Hu, D. Y., Che, H. Z., Du, R. G., Wu, Y. F., Xia, X. G., Zha, B., Liu, J., Niu, Y. W., Wang, H., Zhang, X. Y., & Shi, G. Y. (2016). Seasonal Variation of Aerosol Optical Properties in an Urban Site of the Yangtze Delta Region of China. Aerosol and Air Quality Research, 16(11), 2884-2896. https://doi.org/10.4209/aaqr.2015.05.0350
- Hou, T., Yu, S., Jiang, Y., Chen, X., Zhang, Y., Li, M., Li, Z., Song, Z., Li, P., Chen, J., & Zhang, X. (2022). Impacts of Chemical Initial Conditions in the WRF-CMAQ Model on the Ozone Forecasts in Eastern China. Aerosol and Air Quality Research, 22(7), 1-18+ap1-7-015. https://doi.org/10.4209/aaqr.210402