CAJ | 학술논문

针对2014年5月末华东地区出现的大范围秸秆焚烧污染事件（ BB），利用上海浦东超级站多种在线监测数据，并结合卫星遥感、数值模拟等方法，对污染期间前（ BB－前）、中（ BB－中）、后（ BB－后）的时空演化进程进行了分析。结果表明，期间平均ρ（PM2．5）和ρ（BC）分别由BB－前的24．3和1．24μg／m3攀升至BB－中的111．90和5．38μg／m3，小时峰值出现在5月27日，达到238．0和15．1μg／m3，BB－后虽有显著好转，但“翘尾”现象明显，ρ（ PM2．5）和ρ（ BC）为34．6和1．49μg／m3；在空气污染扩散不利条件下，生物质燃烧污染会加重其他多种污染物的污染水平；农田秸秆燃烧烟羽的传输受气象条件所限，使得上海外围火点的多寡与城市污染的水平无必然联系。
침대2014년5월말화동지구출현적대범위갈간분소오염사건（ BB），이용상해포동초급참다충재선감측수거，병결합위성요감、수치모의등방법，대오염기간전（ BB－전）、중（ BB－중）、후（ BB－후）적시공연화진정진행료분석。결과표명，기간평균ρ（PM2．5）화ρ（BC）분별유BB－전적24．3화1．24μg／m3반승지BB－중적111．90화5．38μg／m3，소시봉치출현재5월27일，체도238．0화15．1μg／m3，BB－후수유현저호전，단“교미”현상명현，ρ（ PM2．5）화ρ（ BC）위34．6화1．49μg／m3；재공기오염확산불리조건하，생물질연소오염회가중기타다충오염물적오염수평；농전갈간연소연우적전수수기상조건소한，사득상해외위화점적다과여성시오염적수평무필연련계。
In this study, a range of environmental monitoring data were collected from the late of May 2014 by multiple on-line moni-toring instruments at Shanghai Pudong supersite to investigate a typical biomass burning ( BB) episode in East China.Moreover, auxiliary information, including MODIS fire spots, airflow backward trajectory as well as meteorological field simulation were com-bined to unveil the spatial-temporal evolution before, during, and after the outbreak of BB pollution event.The results showed that during the pollution episode, the average mass concentration of PM2.5 and BC reached 111.90μg/m3 and 5.38μg/m3 , respective-ly, which were much higher than that of before (24.3 μg/m3 and 1.24μg/m3 ) and after (34.6 μg/m3 and 1.49μg/m3 ) the BB pollution episode.The pollution peak occurred on 27 May (238.0 μg/m3 and 15.1μg/m3).Under the condition of bad spread of air pollution, BB could strengthen the pollution levels of some other pollutants.Lastly, given that the transport pattern of BB plumes were subjected to meteorological field, there was no obvious correlation between the number of fire spots in the periphery and the pollution levels in Shanghai.