主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

Journal of Meteorology and Environment ›› 2016, Vol. 32 ›› Issue (4): 48-54.doi: 10.3969/j.issn.1673-503X.2016.04.006

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Effect of fireworks forbidden on air quality during the Spring Festival in Nanjing

YANG Feng1, LI Wen-qing1, XIE Fang-jian1, LU Xiao-bo2   

  1. 1. Nanjing Academy of Environmental Sciences, Nanjing 210013, China;
    2. Nanjing Environmental Monitoring Center Station, Nanjing 210013, China
  • Received:2015-10-19 Revised:2016-03-22 Online:2016-08-30 Published:2016-08-30

Abstract: Based on monitoring data of main pollutant (PM10,PM2.5,SO2,and NO2) concentrations and meteorological data from urban and suburban areas in Nanjing during the Spring Festival of 2014 and 2015,the effects of fireworks forbidden on air quality were analyzed.The results indicate that fireworks forbidden during the Spring Festival of 2015 result in improving air quality effectively in Nanjing.Air quality index (AQI) decreases 20%-30% during the Spring Festival of 2015,comparing to that during the same period in 2014.Air quality remains in a good level from New Year's Eve to January 3,2015 according to the lunar calendar.During the Spring Festival of 2015,SO2 and NO2 concentrations vary relatively small and reach the secondary level according to Chinese air quality standard.However,PM10 and PM2.5 concentrations show an opposite variation with those in 2014 and have relatively larger range of variation,varying from 13 μg·m-3 to 234.5 μg·m-3 and from 17.5 μg·m-3 to 320.4 μg·m-3,respectively.The main pollutants that cause air pollution during the Spring Festival in Nanjing are primarily PM2.5,and then PM10.The maximum hourly mean concentrations of PM10 and PM2.5 during the Spring Festival of 2015 only take up 51% and 40% to that of 2014,respectively.In addition,PM2.5 concentrations in urban and suburban areas reduce obviously in the Spring Festival of 2015,but the difference between the two areas is small.Meteorological factors greatly influence pollutant diffusion during the Spring Festival in Nanjing;however,the fireworks prohibition has a dominant effect on the reduction of PM2.5 concentration.

Key words: Fireworks forbidden, Air Quality Index (AQI), Pollutant

CLC Number: