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Impact of firecrackers burning and policy-practice gap on air quality in Delhi during Indian's great mythological event of Diwali festival
Cities ( IF 6.077 ) Pub Date : 2021-07-26 , DOI: 10.1016/j.cities.2021.103384
Asish Saha 1 , Subodh Chandra Pal 1 , Indrajit Chowdhuri 1 , Dipankar Ruidas 1 , Rabin Chakrabortty 1 , Paramita Roy 1 , Manisa Shit 2
Affiliation  

Delhi is one of the most polluted cities in the world particularly in winter. During the winter season, Indian's great mythological event of Diwali festival is celebrated across the nation. This celebration with firecrackers burning and vehicles emission is responsible for bad air quality in Delhi. Very poor air quality takes place at Diwali night with significant concentration of aerosols, carbon and trace gases. This study emphasized on Diwali firecrackers emissions and associated increasing atmospheric pollutants level. Study also focused on pollution related various policies and policy-practice gaps to mitigate them accordingly for both local and international practice. To do so, pre-lockdown, during lockdown, unlock phases, during and post Diwali festival pollutants data were collected. Man-Kendal and Sen's slope trend analysis was used to estimate the air pollutants variation. The result indicates there are significant increases of atmospheric pollutants, particularly PM10 and PM2.5 with their average Man-Kendal and Sen's slope values are 2.873 and 1.257, and 2.791 and 1.576 respectively. The overall variation of air quality index (AQI) during pre-Diwali and Diwali time was 8.7%. Therefore, this study should help several policy makers and concern authorities to mitigate this phenomenon regarding the proper implementation of pollution management strategies.



中文翻译:

印度排灯节大神话事件期间燃放鞭炮和政策实践差距对德里空气质量的影响

德里是世界上污染最严重的城市之一,尤其是在冬天。在冬季,印度全国各地都会庆祝排灯节这一伟大的神话事件。这场燃放鞭炮和车辆排放的庆祝活动是德里空气质量不佳的原因。排灯节之夜的空气质量非常差,气溶胶、碳和痕量气体浓度很高。这项研究强调了排灯节鞭炮排放和相关的大气污染物水平增加。研究还侧重于与污染相关的各种政策和政策实践差距,以根据当地和国际实践相应地减轻这些差距。为此,我们收集了封锁前、封锁期间、解锁阶段、排灯节期间和之后的污染物数据。Man-Kendal 和 Sen' s 斜率趋势分析用于估计空气污染物的变化。结果表明大气污染物显着增加,尤其是PM10和 PM 2.5的平均 Man-Kendal 和 Sen 斜率值分别为 2.873 和 1.257,以及 2.791 和 1.576。排灯节前和排灯节期间空气质量指数 (AQI) 的总体变化为 8.7%。因此,这项研究应该有助于一些政策制定者和有关当局在正确实施污染管理策略方面减轻这种现象。

更新日期:2021-07-26
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