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Full-Text Articles in Social and Behavioral Sciences
Effects Of Actual And Perceived Air Pollution On U.S. Twitter Sentiment, George R. Garcia Iii
Effects Of Actual And Perceived Air Pollution On U.S. Twitter Sentiment, George R. Garcia Iii
Undergraduate Honors Theses
Objective
This study examines the associations between actual and perceived air pollution (PM2.5, AQI, and ground visibility), weather information, and expressed sentiment via US Twitter. Heterogeneity in the associations across date and county characteristics are also explored.
Methods
A sentiment index was constructed using 27,827,828 geotagged U.S. tweets posted between May 31 and November 30, 2015. Associations between AQI category changes and the sentiment index were estimated using multi-cutoff regression discontinuity models. Associations between same-day and lagged PM2.5, ground visibility, and the sentiment index were estimated using weighted linear regression models. Models include weather variables and …