Transportation-Related Emissions Surrogates Support Modeling of Oxides of Nitrogen Exposure

摘要: Background Mobile sources such as traffic and airports contribute significantly to concentrations of nitrogen oxides (NOx) and nitrogen dioxide (NO2). Exposure to these pollutants in turn are associated with a range of negative health outcomes. Accurate, high resolution spatiotemporal models of NOx /NO2 are needed to support further epidemiological research. Traffic tailpipe emissions are especially elevated under high engine load (acceleration), and our earlier work shows accounting for airport emissions may decrease measurement error in our spatiotemporal NOx models. The goal of this work is to showcase improvements in accounting for these mobile sources more accurately and these features’ importance in our spatiotemporal NOx models. Methods We calculated airport-related NOx emissions by allocating airport-related NOx emissions from CARB’s CEPAM emission inventory tool to each airport in …