Disguised Pollution: Industrial Activities in the Dark
54 Pages Posted: 23 Apr 2019
Date Written: March 25, 2019
In this paper, we study the disguised pollution of industrial firms in China. We find that sulfur dioxide (SO2) readings increase by 15.9% in monitoring stations four hours after sunset, relative to four hours before, in high factory density areas. In addition, we also find significantly increased readings for PM2.5 and PM10 in these areas after sunset. Next, using daily hospital visits data, we document that such disguised pollution behavior has unforeseen health consequences: cumulative exposure to SO2 above 40 𝜇g/m3 for three days increases hospital visits on the entire population’s respiratory diseases by 15.6%. Inspections by the Ministry of Environmental Protection can only temporarily reduce pollution and hospital visits.
Keywords: air pollution, disguised behavior, industrial firms, inspections, health, China
JEL Classification: Q53, L51, I18, D22
Suggested Citation: Suggested Citation