報告主題：【食安基地和C’FHER學術報告】Impact of air pollution on short-term movements: evidence from air travels in China
報 告 人：浙江大學公共管理學院 陳帥研究員
主 持 人：孟婷博士
While there is abundant evidence demonstrating that residents permanently migrate in search of locations with cleaner air, there are considerably fewer studies that investigate if travelers also take short-term trips to reduce their exposure to air pollution. In this study, we use a complete dataset of flights at Beijing International Airport to investigate if travel patterns are indeed correlated with air quality-differences across cities in China. Our identification strategy is aided by instrumenting air quality using thermal inversions. We find that a one-unit increase in the Air Pollution Index of origin over destination city would lead to a 0.36% increase in number of passengers on the flight. When considered separately by cabin-class, the number of first-class passengers increased about three-times faster than economy-class. Using lead and lag air quality, we also find that averting-related travel decisions are typically made about one week in advance, and each travel lasts for about two days.