Estimates of air pollution in Delhi from the burning of firecrackers during the festival of Diwali
Estimates of air pollution in Delhi from the burning of firecrackers during the festival of Diwali
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DOI：
10.1371/journal.pone.0200371
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发表时间：
2018-08-13
期刊：
影响因子：
3.7
通讯作者：
Sane, Renuka
中科院分区：
文献类型：
--
作者：
Ghei, Dhananjay;Sane, Renuka
德里是世界上污染最严重的城市之一，特别是在12月至1月的冬季。这几个月恰逢排灯节。有人认为，排灯节之后，由于节日期间燃放鞭炮，空气质量会变得更差。我们使用2013年至2017年PM 2.5颗粒浓度的每小时数据来估计排灯节对德里空气质量的影响。我们改进现有的工作，通过使用事件研究技术，以及差分中差分回归框架来估计排灯节对空气质量的影响。结果表明，排灯节会导致空气污染的小幅增加，但在统计学上是显著的。在德里的不同地点，效果是不同的。据我们所知，这是排灯节燃烧对空气污染贡献的第一个因果估计。
Delhi has had the distinction of being one of the most polluted cities in the world, especially in the winter months from October-January. These months coincide with the religious festival of Diwali. It is argued that air quality gets worse in the aftermath of Diwali on account of firecrackers that get burned during the festival. We use hourly data on PM 2.5 particulate concentration from 2013 to 2017 to estimate the Diwali effect on air quality in Delhi. We improve on existing work by using the event study technique as well as a difference-in-difference regression framework to estimate the Diwali effect on air quality. The results suggest that Diwali leads to a small, but statistically significant increase in air pollution. The effect is different across locations within Delhi. To our knowledge, this is the first causal estimate of the contribution of Diwali firecracker burning to air pollution.