Mobile Source Contributions to Ambient Ozone and Particulate Matter in 2025.

ABSTRACT: The contribution of precursor emissions from 17 mobile source sectors to ambient ozone and fine particulate matter levels across the U.S. were evaluated, using the CAMx photochemical model, to identify which mobile source sectors are projected to have the largest impacts on air pollution in 2025. Both onroad and nonroad sectors contribute considerably to projected air pollution across much of the country. Summer ozone season ozone contributions between 2 and 5 ppb, which are among the highest levels presented on the maps of mobile source sectors, are largely found in the southeast United States from the onroad sectors, most notably light-duty and heavy-duty vehicles, and along the coastline from the Category 3 (C3) marine sector. Annual average PM_2.5 contributions between 0.5 to

SUBMITTER: Zawacki M 

PROVIDER: S-EPMC6192431 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature