High quality air quality sensors can be very expensive and make it difficult for communities to efficiently and adequately monitor pollution levels and greenhouse gas emissions. The University of Utah's air quality sensor network installed on TRAX trains that travel throughout the Salt Lake Valley have been effective at mapping out emissions while limiting the cost of required sensors. A new study estimates that the TRAX sensor network covers the same area as 30 stationary sensors. This method of pollution analysis could be a model for other cities to follow to better monitor their greenhouse gas emissions.

To learn more and read the full study, check out the @theU article by Paul Gabrielsen here: https://attheu.utah.edu/facultystaff/trax-greenhouse/.

NOAA's Climate Program Office also has a press release on the paper, which can be read here: https://cpo.noaa.gov/News/News-Article/ArtMID/6226/ArticleID/2115/The-Benefits-of-Measuring-Greenhouse-Gases-using-Light-Rail-Public-Transit 

Climate.gov also featured the findings of the paper on their website, which can be found here: https://climate.gov/news-features/featured-images/noaa-sponsored-research-shows-mobile-sensors-are-low-cost-effective.