Influence of Oil and Gas End-Use on Summertime Particulate Matter and Ozone Pollution in the Eastern US.

ABSTRACT: The influence of oil and gas end-use activities on ambient air quality is complex and understudied, particularly in regions where intensive end-use activities and large biogenic emissions of isoprene coincide. In these regions, vehicular emissions of nitrogen oxides (NO_x≡NO + NO₂) modulate the oxidative fate of isoprene, a biogenic precursor of the harmful air pollutants ozone, formaldehyde, and particulate matter (PM_2.5). Here, we investigate the direct and indirect influence of the end-use emissions on ambient air quality. To do so, we use the GEOS-Chem model with focus on the eastern United States (US) in summer. Regional mean end-use NO_x of 1.4 ppb suppresses isoprene secondary organic aerosol (OA) formation by just 0.02 μg m

SUBMITTER: Vohra K 

PROVIDER: S-EPMC11542890 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature